EP4048191A1 - Guided oblique transverse anatomical implant - Google Patents

Guided oblique transverse anatomical implant

Info

Publication number
EP4048191A1
EP4048191A1 EP20792445.7A EP20792445A EP4048191A1 EP 4048191 A1 EP4048191 A1 EP 4048191A1 EP 20792445 A EP20792445 A EP 20792445A EP 4048191 A1 EP4048191 A1 EP 4048191A1
Authority
EP
European Patent Office
Prior art keywords
implant
longitudinal axis
distal end
mounting
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20792445.7A
Other languages
German (de)
French (fr)
Inventor
Gérard Scortecci
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP4048191A1 publication Critical patent/EP4048191A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0089—Implanting tools or instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0022—Self-screwing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/006—Connecting devices for joining an upper structure with an implant member, e.g. spacers with polygonal positional means, e.g. hexagonal or octagonal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/0075—Implant heads specially designed for receiving an upper structure

Definitions

  • the present invention relates to the field of dental implants. It finds a particularly advantageous application in the field of integrable osteo dental implants. These will include oblique implants, inserted transversely, neither axially nor laterally.
  • Implants intended to avoid critical anatomical areas such as lateral insertion implants.
  • transverse or oblique implants inserted into the jaw bone with an axis of insertion oblique with respect to the usual vertical axis along the major axis of the natural teeth.
  • These implants have a proximal end intended to cooperate with the prosthetic assembly and whose upper face of circular contour is inclined relative to the longitudinal axis of the implant.
  • the upper face can therefore receive a conventional prosthetic assembly being fixed on a connector arranged on the upper face.
  • the placement of the implant using an assembly tool has drawbacks due to the inclination of the upper face causing an offset of the longitudinal axes of the implant and of the assembly tool. This offset results in increased stresses on the cap screw between the implant and the assembly tool. The insertion is therefore not optimal.
  • An object of the present invention is therefore to provide a dental implant, and a device for mounting said implant which allows placement without misalignment of the implant, thus improving its insertion into the jaw bone.
  • a dental implant comprising a main portion, directed along a longitudinal axis, and an upper portion, the main portion extending from a distal end of the implant to the upper portion, the portion upper extending to a proximal end of the implant opposite to the distal end and being provided with an attachment area of an implant mounting device.
  • the upper portion comprises, at the proximal end, an emergence face of elliptical contour defined by the intersection of a cylinder of circular section centered on the longitudinal axis with a section plane inclined with respect to a direction radial perpendicular to the longitudinal direction.
  • This configuration of the emergence face facilitates cooperation of the dental implant with an assembly tool via this fixing zone. Indeed in this way, the center of the emergence face in the plane of the emergence face intercepts the longitudinal axis of the implant. The implant can thus be placed along the longitudinal axis of the implant, thus limiting the misalignment.
  • the fixing zone is arranged below the plane of the emergence face and comprises a projecting central part having a polygonal outer profile as well as a peripheral belt whose inner wall is of circular section and whose outer wall is formed by a part of the outer wall of the upper portion extending to the elliptical contour of the emergence face, the projecting central part and the peripheral belt being separated by a groove.
  • connection is said to be internal.
  • the presence of a central part separated from the peripheral belt by a groove improves cooperation with the mounting device.
  • the presence of this configuration is facilitated in particular by the elliptical contour of the emergence face allowing thicknesses of the peripheral belt which are satisfactory for the production of the implant and its resistance.
  • the projecting central part comprises a threaded central cavity intended to receive a fixing screw.
  • the longitudinal axis of the central cavity extends from the center of the emergence face.
  • a device for mounting an implant able to cooperate with an implant according to any one of the preceding claims, characterized in that it comprises a mounting member comprising a cylindrical body of circular section comprising a distal end comprising a connection zone.
  • the connection zone comprises a fitting member configured to fit into the groove of the fixing zone of the implant and whose outer wall is of shape and dimension corresponding to those of the inner wall of the belt. peripheral and whose inner wall is of shape and dimension corresponding to those of the polygonal outer profile of the central part so that their surfaces cooperate in the assembly.
  • the cooperation of the mounting device and the implant takes place advantageously by the two-by-two cooperation of the external and internal walls of the implant and of the device.
  • the cooperation of the device with the polygonal external profile allows a transmission of forces from the device to the implant while the cooperation of the device with the peripheral belt allows guidance during assembly of the device and the implant.
  • the application of the mounting device on the emergence face of the implant having an elliptical contour is optimized by virtue of the increase in the surface area of the emergence face in contact with the mounting device.
  • the body of the mounting member comprises a proximal end intended to cooperate with a drive member which may or may not be in one piece, for example a mandrel.
  • the cooperation of the drive member with the mounting member is advantageously configured to ensure transmission of a torque around the longitudinal axis of the main portion of the implant.
  • Another aspect relates to an assembly for mounting a dental implant by a mounting device, in which the longitudinal axis of the main portion of the implant coincides with the longitudinal axis of the mounting member.
  • the longitudinal axis of the through passage coincides with the longitudinal axis of the central cavity of the emergence face.
  • the screw is introduced into the through passage and is inserted into the central cavity of the implant ensuring the attachment of the mounting member to the implant.
  • the assembly comprises an integrated visual indexing device advantageously allowing the correct automatic positioning of the implant in a crestal situation, in particular so as to be able to be prosthetically useful.
  • Another aspect relates to a method of mounting a dental implant on a mounting device.
  • Another aspect is a method of securing a dental implant into the jawbone.
  • the implant according to the invention advantageously associated with the mounting device according to the invention, allows the bypass of critical atomic regions advantageously by virtue of a cylindrical rectilinear mounting assembly with angulated emergence of crestal indexing producing instantaneous axis adjustment with preferably a visual positional identification system for the surgeon, so as to be easily usable for the manufacture of an implant-supported prosthesis.
  • FIG. 1 represents a view in exploded perspective of an assembly for mounting a dental implant by a mounting device according to the invention.
  • Figure 2 shows a longitudinal sectional view of a mounting assembly of a dental implant by a mounting device assembled to one another.
  • FIG. 3 represents a diagram of the envelope of a dental implant according to the invention.
  • FIG. 4 represents a top view of the proximal end and of the fixing zone of a dental implant according to the invention.
  • FIG. 5 represents a detail A of FIG. 3 illustrating the micro-threading of the implant according to the invention.
  • Figure 6 shows a detail B of Figure 3 illustrating the macro threading of the implant according to the invention
  • FIG. 7 represents a sectional view of the assembly member according to the invention.
  • Figure 8 shows a top view of the distal end of the mounting member.
  • the central part 11 comprises a central threaded cavity 18 intended to receive a fixing screw 200;
  • the upper face of the central part 11 is arranged in the plane 10 of the emergence face 8; - the longitudinal axis of the central cavity 18 is directed perpendicular to the plane of the emergence face 8;
  • the upper portion 3 comprises a basal part 20, following the main portion 2, of cylindrical shape.
  • the body 102 of the mounting member 101 comprises a proximal end 107 intended to cooperate with a drive member 300;
  • the distal end 103 of the body 102 of the mounting member 101 comprises a connecting plane of elliptical contour defined by the intersection of the distal end 103 with a cutting plane inclined with respect to a radial direction 151 of the 'assembly member 101;
  • the assembly member 101 comprises a through passage comprising a first end opening 109 at the distal end 103 and a second end opening 110 at the outer surface of the body 102 adapted to receive a fixing screw 200;
  • the first opening end 109 of the through passage is configured to face the central cavity 11 threaded of the implant 1 so as to allow the passage of the fixing screw 200 in the through passage of the mounting member 101 and its fixation in the threaded central cavity 18 of the implant 1.
  • the invention relates to a dental implant 1 comprising a main portion 2 directed along a longitudinal axis 50 and an upper portion 3.
  • the main portion extends from a distal end 4 of the implant to the upper portion 3.
  • the portion upper 3 extends to a proximal end 5 of the implant opposite to the distal end 4.
  • the distal end 4 is intended to be buried in the jawbone while the proximal end 5 is accessible from the outside for the reception of a dental prosthesis organ.
  • the upper portion 3 comprises a fixing zone 6 intended to cooperate with a mounting device 100 used during the placement of the implant.
  • the fixing zone 6 can advantageously also be intended to cooperate with a prosthetic assembly.
  • the upper portion 3 preferably comprises a basal part 20, the basal part 20 is arranged at the distal end of the main portion 2, that is to say in the area adjacent to the main portion 2.
  • the basal part is advantageously of cylindrical shape with a circular section.
  • the dental implant 1 according to the invention and in particular the main portion 2, is intended to be inserted into the jaw bone. At least the main portion 2 is said to be osteointegratable. According to one embodiment, the upper portion 3 is preferably at least partially buried in the soft tissues of the gum.
  • the upper portion 3 comprises, at the proximal end 5 of the implant
  • an emergence face 8 of elliptical contour is defined by the intersection of a cylinder of circular section centered on the longitudinal axis 50 of the implant with a section plane inclined relative to a radial direction 51 perpendicular to the longitudinal axis 50
  • the cylinder in question corresponds to a geometric envelope forming the continuity of the basal part 20.
  • the emergence face 8 can also be referred to as the crestal emergence.
  • the longitudinal axis 50 of the implant 1 extends between the proximal end 5 and the distal end 4, advantageously passing through the center of the implant 1.
  • the latter is advantageously of axial symmetry around the axis 50 at least on the main portion
  • the radial direction 51 is understood to be a direction perpendicular to the longitudinal axis 50.
  • the fixing zone 6 is advantageously arranged under the plane 10 of the emergence face 8.
  • the fixing zone 6 is referred to as the internal connector.
  • the fixing zone 6 is not prominent on the surface of the emergence face 8.
  • the plane 10 of the emergence face 8 is defined by the plane coincident with the surface of the emergence face 8.
  • the plane 10 is an angulated elliptical plane.
  • the fixing zone 6 comprises a projecting central part 11 having a preferably polygonal outer profile 12, for example hexagonal.
  • the fixing zone 6 also comprises a peripheral belt 13 forming an outer ring, the inner wall 14 of which is advantageously of circular section.
  • Other forms of interior wall 14 can be envisaged without departing from the scope of the invention, in particular a frustoconical interior wall 14.
  • the inner wall 14 will be flared in the direction of the proximal end 3 of the implant 1 to cooperate with the mounting device 100.
  • the projecting central part 11 and the peripheral belt 13 are separated by a groove 17.
  • the groove 17 has an outer wall corresponding to the inner wall 14 of the peripheral belt 13 and an inner wall corresponding to the polygonal-shaped outer profile 12 of the part. protruding central 11.
  • the bottom of the groove is preferably plane and parallel to the plane of the emergence face 8.
  • the peripheral belt 13 has for outer wall a part of the outer wall 16 of the upper portion 3 extending to to the elliptical contour of the emergence face 8.
  • the peripheral belt 13 advantageously constitutes an outer rim of the proximal end 5 of the dental implant 1.
  • the peripheral belt 13 advantageously has an elliptical contour defined by the elliptical contour of the face emergence 8.
  • the shape of the peripheral belt 13 having an elliptical contour and a preferably circular inner wall 14 makes it possible to increase the thickness of the peripheral belt 13.
  • This increase in thickness of the peripheral belt 13 facilitates the manufacture of the implant and in particular of this zone by increasing the quantity of material of the peripheral belt 13 and thus the resistance of the implant.
  • This particular shape of the peripheral belt 13 makes it possible in particular to have an internal connection via the projecting central part 11 while having an emergence face 8 of elliptical contour whose longitudinal plane 10 is inclined relative to the longitudinal axis 50 of implant 1.
  • the peripheral belt 13 also acts as an application surface stop for the mounting device 100 of the implant 1, thus promoting cooperation between the implant 1 and the mounting device 100.
  • the peripheral belt 13 and the projecting central part 11 are of the same height, as in the case illustrated in the figures.
  • the peripheral belt 13 may optionally be of greater height than the central part 11.
  • the number of sides of the polygonal outer profile 11 is not limited. In general, all shapes of profiles will be suitable for transmitting a tightening torque from a mounting device.
  • the projecting central part 11 ensures a centering of the assembly device and a anti-rotational positioning.
  • the projecting central part 11 preferably comprises a threaded central cavity 18 able to cooperate with a fixing screw 200.
  • the projecting central part 11 has an upper end formed in a parallel plane and advantageously coincident with the plane 10 of the emergence face 8.
  • the central cavity 18 includes a circular interior wall.
  • the central cavity 18 has a longitudinal axis perpendicular to the plane 10 of the emergence face 8.
  • the longitudinal axis extends from the center of the central cavity 18. The center being understood as the center of the circular inner wall of central cavity 18.
  • the center of the central cavity 18, at its mouth is carried by the longitudinal axis 50 of the implant 1. In this way, there is no misalignment of the fixing zone 6. .
  • the plane 10 of the emergence face 8 has an angle of inclination 7 relative to the longitudinal axis 50 of between 40 ° and 55 °, for example 53 °.
  • the implant 1 is as illustrated in Figures 1 to 3.
  • the implant 1 is advantageously made in a single piece and from a single block of material. This gives greater rigidity and better mechanical strength of the implant.
  • the implant is made of titanium.
  • the implant 1 comprises, from its distal end 4, a first portion 400 of frustoconical shape widening out from the distal end 4 towards the proximal end 5 of the implant 1.
  • the implant then comprises a second portion 401 of frustoconical shape widening towards the proximal end 5 of the implant.
  • the inclination of the truncated cone relative to the longitudinal axis 50 of the implant 1 is greater in the first portion 400 than in the second portion 401.
  • the implant 1 then comprises a third portion 403 of cylindrical shape of circular section.
  • the implant then comprises a fourth frustoconical portion 403 flaring in the direction of the proximal end 5.
  • the upper portion 3 of the implant 1 and advantageously firstly the basal portion 20 of cylindrical shape of circular section.
  • the surface, and in particular the roughness of the surface patterns, of the implant is preferably variable depending on the portions thereof.
  • the first portion 400 and the second portion 401 comprise a macro thread 22.
  • the first portion 400 and the second portion 401 are self-drilling.
  • This first portion 400 and the second portion 401 advantageously form a conical apical segment with a self-drilling end.
  • the first portion 400 comprises a groove ensuring the evacuation of the debris to the outside during the insertion of the implant.
  • the third portion 402 and the fourth portion 403 comprise a micro-thread 21 preferably self-tapping. The third portion 402 and the fourth portion 4 facilitate the oblique micrometric progression of the implant 1 to the final position.
  • the implant 1 advantageously has a three-phase morphology.
  • the term “triphasic” is understood to mean that the implant comprises three phases with distinct functionalities: the first portion 400 and the second portion 401, then the third portion 402 and finally the fourth portion 403. These three phases are adapted to the bone densities successively encountered during the procedure. specific transverse osteotomy during implant placement.
  • the insertion of the implant into the jawbone is carried out transversely, that is to say inclined, preferably at an angle strictly less than 90 °, with respect to the vertical defined according to the large axis of natural teeth preferentially from the top of the bony crest towards the major pillars of the maxillofacial skeleton.
  • the implant will successively meet a moderately dense crestal bone called the crestal stage, then will penetrate the spongy spongy bone, called the medullary stage, to finally come s 'anchor in the dense beam of basal bone also referred to as the basal apical stage.
  • the implant according to the invention advantageously has a total height between the distal end 4 and the proximal end 5 greater than or equal to 15 mm, preferably 18 mm.
  • the invention also relates to an assembly device 100.
  • the assembly device 100 is able to cooperate with an implant 1 as described above.
  • the mounting device 100 comprises a mounting member 101 comprising a cylindrical body 102 of circular section.
  • the body 102 comprises a distal end 103 opposite to a proximal end 107.
  • the body 102 is configured to cooperate with the implant 1, more particularly with the emergence face 8 and the fixing zone 6, through its distal end 103.
  • the body is configured to cooperate via its proximal end 107 with a drive member 300.
  • the drive member 300 is for example a mandrel as illustrated in Figures 1 and 2.
  • the drive member 300 may or may not be in one piece.
  • the drive member 300 cooperates with the proximal end 107 of the body 102 of the mounting device 100 so as to transmit a torque around the longitudinal axis 50 of the main portion of the implant 1.
  • the drive member 300 may comprise, according to one embodiment, a contra-angle making it possible to shift an actuation module comprising a motor and a micro reducer.
  • the body 102 of the mounting member 101 comprises at its proximal end 107 a connector intended to cooperate with the drive member 300.
  • the connector arranged at the proximal end 107 is advantageously internal.
  • the proximal end 107 comprises a polygon such as for example an octagon, internal.
  • the proximal end 107 therefore has a depression of polygonal section intended to cooperate with the drive member 300.
  • the drive member 300 comprises a distal end intended to cooperate with the proximal end 107 of the body 102 of the mounting member 101.
  • the distal end of the drive member advantageously comprises a portion of polygonal section of dimensions and shape complementary to the depression of polygonal section of the proximal end 107.
  • the polygonal cooperation between the drive member 300 and the body 102 of the mounting member allows optimum transmission of the torque around the shaft.
  • the longitudinal axis 150 being advantageously coincident with the longitudinal axis 250 of the mounting member 100 and advantageously with the longitudinal axis 350 of the drive member 300, the transmission torque and the rotation of the implant in the longitudinal axis of the assembly ensure controlled and optimized penetration of the implant 1 into the jawbone.
  • the distal end 103 of the body 102 of the mounting member 101 includes an elliptical contoured connection plane defined by the intersection of the distal end with a cutting plane inclined with respect to a radial direction of the mounting member. mounting.
  • connection zone 104 intended to cooperate with the fixing zone 6 of the implant 1.
  • the connection zone 104 is advantageously a male portion intended to cooperate. with the fixing zone 6 considered as a female portion.
  • connection zone 104 preferably comprises a fitting member 105 configured to fit into the groove 17 of the fixing zone 6 of the implant 1.
  • the fitting member 105 has an outer wall 106 of shape and dimensions corresponding to those of the inner wall 14 of the peripheral belt 13 so that their surfaces cooperate in the assembly.
  • the outer wall 106 will also be, with a slightly smaller diameter according to predetermined playing conditions.
  • the fitting member 105 has an inner wall 113 of shape and dimensions corresponding to that of the polygonal outer profile 12 of the projecting central part 11.
  • the inner wall 113 will advantageously be of the same. polygonal shape and slightly smaller dimensions according to predetermined playing conditions.
  • the body 102 of the mounting member 101 advantageously comprises a through passage 108 intended to receive a screw 200.
  • the through passage 108 comprises a first end 109 opening out at the distal end 103 of the body 102.
  • the through passage 108 comprises a second end 110 opening out to the outer surface 111 of the body 102.
  • the end 110 is configured to receive a screw 200 including a screw head 201, that is to say the section of the through passage 108 at the level of the end 110 is larger than the section of the head 201 of a screw.
  • the end 110 of the through passage 108 is advantageously arranged at the distal end 103 so as to be facing the central cavity 18 of the central part 11 when the mounting member is assembled with the implant 1.
  • the through passage 108 is configured to retain a screw 200 by its head 201, that is to say that the section of the through passage 108 has a narrowing, advantageously at a distance from the end 110, greater than the height of the head 201 of the screw so that the head 201 of the screw is buried in the volume of the body 102 when it is assembled with the implant 1.
  • the constriction 114 is of smaller dimensions than the section of the head 201 d a screw 200 and above the section of a screw body 202.
  • the mounting device 100 advantageously comprises the mounting member 100 and a screw 200 arranged in the through passage 108.
  • the through passage 108 has a longitudinal axis 250 in the extension of the longitudinal axis of the central cavity 18. In this way, when the mounting member 100 is assembled to the implant 1, the through passage 108 and the central cavity 18 form a channel for receiving the screw 200. The through passage 108 and the central cavity 18 are in the same axis.
  • the invention relates to a method for assembling an assembly device 100 and a dental implant 1.
  • the assembly method comprises a step of assembling the dental implant 1 and a dental implant 1. mounting member 101.
  • This assembly step comprises applying the distal end of the body 102 of the mounting member 101 to the proximal end 5 of the implant 1.
  • this application ensures the insertion of the fitting member 105 in the groove 17.
  • the fitting member 105 inserted in the groove 17 ensures the surface contact of the inner wall 14 of the peripheral belt 13 and of the outer wall of the fitting member 105 and, alternatively or in addition, the surface contact of the polygonal outer profile 12 of the central part 11 and of the inner wall of the fitting member 105.
  • the assembly method advantageously comprises a subsequent step of fixing the mounting member 101 and the dental implant 1.
  • This fixing step comprises the insertion of a screw 200 in the through passage 108 of the body 102.
  • the screw 200 is introduced by the second end emerging from 110 of the through passage 108.
  • the screw 200 abuts by its head 201 against the constriction 114 of the through passage 108.
  • the screw body 200 is inserted into the central cavity 18 threaded .
  • the screw 200 is screwed until its end of travel in the central cavity 18. The screw 200 thus secures the mounting member 101 on the implant 1.
  • the assembly method comprises a step of assembling the drive member 300 on the mounting member 101.
  • the drive member 300 cooperates with the proximal end 107 of the body 102.
  • a rotational movement is imparted to the drive member 300 which is transmitted to the mounting member 101 by the connection of the member d drive 300 and said mounting member 101.
  • the rotational movement is also transmitted to the implant 1 by the connection of the mounting member 101 and the implant 1.
  • the mounting screw 200 only resumes. very little, if at all, the forces (essentially a couple) which are taken up by the central part 11 of the implant cooperating with the fitting member 105 of the body 102.
  • the prosthetic assembly is assembled on the implant 1 after removal of the mounting member 101.
  • the implant 1 comprises an external indexing element.
  • the indexing element is formed by the through passage 108 of the screw 200. The indexing element allows installation of the implant in an easily identifiable final position to be used for positioning the prosthetic assembly. without requiring the use of angulated angle take-up pillars.
  • the indexing element allows automatic placement of the emergence face 8 in a prosthetic corridor.
  • the prosthetic assembly intended to be assembled to the implant 1 according to the invention comprises a distal end provided with a connection plane of elliptical contour defined by the intersection of the distal end with a cutting plane inclined by relative to a radial direction of the assembly member.
  • the dental implant according to the invention and advantageously the associated mounting device responds to the challenges of atrophied jaws presenting major anatomical difficulties beyond the reach of traditional axial implants currently on the market.
  • the invention advantageously makes it possible to eliminate the need for heavy and unpredictable preliminary bone grafts and to allow a large number of patients, in particular the elderly, to have rapid access to fixed teeth.
  • the dental implant according to the invention has an oblique offset placement different from that of a traditional implant which is fixed vertically in the residual bone along the axis of the prosthetic tooth.
  • the implant and the mounting device according to the invention can be used in guided surgery thanks to the mounting member advantageously serving as an implant holder arranged in the extension of the main portion of the implant.
  • connection area bottom surface of the connection area
  • screw head that can serve as an index of good visual positioning of the crestal emergence of the implant; it may include a visual marker for this purpose

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)

Abstract

The invention concerns a dental implant (1) that comprises an integrated indexing system allowing the implant to be correctly positioned by the surgeon such that it can be useful prosthetically, comprising a main portion (2), directed along a longitudinal axis (50), and a top portion (3), the main portion (2) extending from a distal end (4) of the implant to the top portion (3), the top portion (3) extending to a proximal end (5) of the implant opposite the distal end and being provided with a zone for fastening a device (100) for mounting the implant, characterised in that the top portion (3) comprises, at the proximal end (5), an emerging face having an elliptical contour and defined by the intersection of a cylinder having a circular cross-section centred on the longitudinal axis with a cutting plane inclined relative to a radial direction perpendicular to the longitudinal axis.

Description

Implant transverse oblique anatomique guidé Guided anatomical oblique transverse implant
DOMAINE TECHNIQUE DE L’INVENTION La présente invention concerne le domaine des implants dentaires. Elle trouve pour application particulièrement avantageuse le domaine des implants dentaires ostéo intégrables. Il s’agira notamment d’implants obliques, insérés de manière transverse, ni axialement, ni latéralement. TECHNICAL FIELD OF THE INVENTION The present invention relates to the field of dental implants. It finds a particularly advantageous application in the field of integrable osteo dental implants. These will include oblique implants, inserted transversely, neither axially nor laterally.
ETAT DE LA TECHNIQUE Les implants dentaires destinés à remplacer la racine d'une dent et sur lesquels un ensemble prothétique est monté pour remplacer la dent sont connus depuis de nombreuses années. De nombreux implants et ensembles prothétiques existent sur le marché. Toutefois, il existe toujours le besoin de proposer des implants dentaires qui répondent aux problématiques de certains patients (présentant des défauts osseux) ou de certaines configurations anatomiques empêchant la mise en place d'implants à insertion axiale, c'est-à-dire suivant le grand axe des dents naturelles. STATE OF THE ART Dental implants intended to replace the root of a tooth and on which a prosthetic assembly is mounted to replace the tooth have been known for many years. Many implants and prosthetic sets exist on the market. However, there is still a need to provide dental implants which respond to the problems of certain patients (with bone defects) or of certain anatomical configurations preventing the placement of axially inserted implants, that is to say following the major axis of natural teeth.
Il existe des implants destinés à éviter les zones anatomiques critiques tels que des implants à insertion latérale. There are implants intended to avoid critical anatomical areas such as lateral insertion implants.
On connaît également des implants transverses ou obliques insérés dans l'os de la mâchoire avec un axe d'insertion oblique par rapport à l'axe vertical usuel selon le grand axe des dents naturelles. Ces implants présentent une extrémité proximale destinée à coopérer avec l'ensemble prothétique et dont la face supérieure de contour circulaire est inclinée par rapport à l'axe longitudinal de l'implant. La face supérieure peut donc recevoir un ensemble prothétique classique se fixant sur une connectique agencée à la face supérieure. La mise en place de l'implant par un outil de montage présente toutefois des inconvénients du fait de l'inclinaison de la face supérieure entraînant un décalage des axes longitudinaux de l'implant et de l'outil de montage. Ce décalage entraîne une augmentation des contraintes sur la vis d'assemblage entre l'implant et outil de montage. L'insertion n'est donc pas optimale. There are also known transverse or oblique implants inserted into the jaw bone with an axis of insertion oblique with respect to the usual vertical axis along the major axis of the natural teeth. These implants have a proximal end intended to cooperate with the prosthetic assembly and whose upper face of circular contour is inclined relative to the longitudinal axis of the implant. The upper face can therefore receive a conventional prosthetic assembly being fixed on a connector arranged on the upper face. However, the placement of the implant using an assembly tool has drawbacks due to the inclination of the upper face causing an offset of the longitudinal axes of the implant and of the assembly tool. This offset results in increased stresses on the cap screw between the implant and the assembly tool. The insertion is therefore not optimal.
Un objet de la présente invention est donc de proposer un implant dentaire, et un dispositif de montage dudit implant qui permet une mise en place sans désaxage de l'implant améliorant ainsi son insertion dans l'os de la mâchoire. An object of the present invention is therefore to provide a dental implant, and a device for mounting said implant which allows placement without misalignment of the implant, thus improving its insertion into the jaw bone.
Les autres objets, caractéristiques et avantages de la présente invention apparaîtront à l'examen de la description suivante et des dessins d'accompagnement. Il est entendu que d'autres avantages peuvent être incorporés. The other objects, features and advantages of the present invention will become apparent on examination of the following description and the accompanying drawings. It is understood that other advantages can be incorporated.
RESUME DE L’INVENTION SUMMARY OF THE INVENTION
Selon un mode de réalisation, on prévoit un implant dentaire comprenant une portion principale, dirigée suivant un axe longitudinal, et une portion supérieure, la portion principale s’étendant depuis une extrémité distale de l’implant jusqu’à la portion supérieure, la portion supérieure s’étendant jusqu’à une extrémité proximale de l’implant opposée à l’extrémité distale et étant munie d'une zone de fixation d’un dispositif de montage de l’implant. According to one embodiment, a dental implant is provided comprising a main portion, directed along a longitudinal axis, and an upper portion, the main portion extending from a distal end of the implant to the upper portion, the portion upper extending to a proximal end of the implant opposite to the distal end and being provided with an attachment area of an implant mounting device.
Avantageusement, la portion supérieure comprend, à l’extrémité proximale, une face d'émergence de contour elliptique définie par l'intersection d’un cylindre de section circulaire centré sur l’axe longitudinal avec un plan de coupe incliné par rapport à une direction radiale perpendiculaire à la direction longitudinale. Advantageously, the upper portion comprises, at the proximal end, an emergence face of elliptical contour defined by the intersection of a cylinder of circular section centered on the longitudinal axis with a section plane inclined with respect to a direction radial perpendicular to the longitudinal direction.
Cette configuration de la face d'émergence facilite la coopération de l'implant dentaire avec un outil de montage par cette zone de fixation. En effet de cette manière, le centre de la face d'émergence dans le plan de la face d'émergence intercepte l'axe longitudinal de l'implant. La mise en place de l'implant peut ainsi se faire suivant l'axe longitudinal de l'implant, limitant ainsi le désaxement. This configuration of the emergence face facilitates cooperation of the dental implant with an assembly tool via this fixing zone. Indeed in this way, the center of the emergence face in the plane of the emergence face intercepts the longitudinal axis of the implant. The implant can thus be placed along the longitudinal axis of the implant, thus limiting the misalignment.
De manière facultative, la zone de fixation est agencée sous le plan de la face d'émergence et comprend une partie centrale saillante présentant un profil externe polygonal ainsi qu’une ceinture périphérique dont la paroi intérieure est de section circulaire et dont la paroi extérieure est formée par une partie de la paroi extérieure de la portion supérieure s’étendant jusqu’au contour elliptique de la face d'émergence, la partie centrale saillante et la ceinture périphérique étant séparées par une gorge. Optionally, the fixing zone is arranged below the plane of the emergence face and comprises a projecting central part having a polygonal outer profile as well as a peripheral belt whose inner wall is of circular section and whose outer wall is formed by a part of the outer wall of the upper portion extending to the elliptical contour of the emergence face, the projecting central part and the peripheral belt being separated by a groove.
La connectique est dite interne. La présence d'une partie centrale séparée de la ceinture périphérique par une gorge améliore la coopération avec le dispositif de montage. La présence de cette configuration est notamment facilitée par le contour elliptique de la face d'émergence permettant des épaisseurs de la ceinture périphérique satisfaisantes pour la réalisation de l'implant et sa résistance. The connection is said to be internal. The presence of a central part separated from the peripheral belt by a groove improves cooperation with the mounting device. The presence of this configuration is facilitated in particular by the elliptical contour of the emergence face allowing thicknesses of the peripheral belt which are satisfactory for the production of the implant and its resistance.
Avantageusement, la partie centrale saillante comprend une cavité centrale taraudée destinée à recevoir une vis de fixation. L'axe longitudinal de la cavité centrale s'étend depuis le centre de la face d'émergence. Advantageously, the projecting central part comprises a threaded central cavity intended to receive a fixing screw. The longitudinal axis of the central cavity extends from the center of the emergence face.
Un autre aspect concerne un dispositif de montage d'un implant, apte à coopérer avec un implant selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un organe de montage comprenant un corps cylindrique de section circulaire comprenant une extrémité distale comprenant une zone de connexion. Eventuellement, la zone de connexion comprend un organe d'emmanchement configuré pour s'insérer dans la gorge de la zone de fixation de l'implant et dont la paroi extérieure est de forme et de dimension correspondantes à celles de la paroi intérieure de la ceinture périphérique et dont la paroi intérieure est de forme et de dimension correspondant à celles du profil externe polygonal de la partie centrale afin que leurs surfaces coopèrent à l'assemblage. Another aspect relates to a device for mounting an implant, able to cooperate with an implant according to any one of the preceding claims, characterized in that it comprises a mounting member comprising a cylindrical body of circular section comprising a distal end comprising a connection zone. Optionally, the connection zone comprises a fitting member configured to fit into the groove of the fixing zone of the implant and whose outer wall is of shape and dimension corresponding to those of the inner wall of the belt. peripheral and whose inner wall is of shape and dimension corresponding to those of the polygonal outer profile of the central part so that their surfaces cooperate in the assembly.
La coopération du dispositif de montage et de l'implant se fait de manière avantageuse par la coopération deux à deux des parois externes et internes de l'implant et du dispositif. La coopération du dispositif avec le profil externe polygonal permet une transmission des efforts du dispositif vers l'implant tandis que la coopération du dispositif avec la ceinture périphérique permet un guidage lors de l'assemblage du dispositif et de l'implant. De plus, l'application du dispositif de montage sur la face d'émergence de l'implant présentant un contour elliptique est optimisée grâce à l'augmentation de la surface de la face d'émergence au contact du dispositif de montage. The cooperation of the mounting device and the implant takes place advantageously by the two-by-two cooperation of the external and internal walls of the implant and of the device. The cooperation of the device with the polygonal external profile allows a transmission of forces from the device to the implant while the cooperation of the device with the peripheral belt allows guidance during assembly of the device and the implant. In addition, the application of the mounting device on the emergence face of the implant having an elliptical contour is optimized by virtue of the increase in the surface area of the emergence face in contact with the mounting device.
Eventuellement, le corps de l'organe de montage comprend une extrémité proximale destinée à coopérer avec un organe d'entrainement pouvant être monobloc ou non, par exemple un mandrin. La coopération de l'organe d'entraînement avec l'organe de montage est avantageusement configurée pour assurer une transmission d'un couple autour de l'axe longitudinal de la portion principale de l'implant. Optionally, the body of the mounting member comprises a proximal end intended to cooperate with a drive member which may or may not be in one piece, for example a mandrel. The cooperation of the drive member with the mounting member is advantageously configured to ensure transmission of a torque around the longitudinal axis of the main portion of the implant.
Un autre aspect est relatif à un ensemble de montage d'un implant dentaire par un dispositif de montage, dans lequel l'axe longitudinal de la portion principale de l'implant est confondu avec l'axe longitudinal de l'organe de montage. Another aspect relates to an assembly for mounting a dental implant by a mounting device, in which the longitudinal axis of the main portion of the implant coincides with the longitudinal axis of the mounting member.
Avantageusement, l'axe longitudinal du passage traversant est confondu avec l'axe longitudinal de la cavité centrale de la face d'émergence. De cette manière, la vis est introduite dans le passage traversant et vient s'insérer dans la cavité centrale de l'implant assurant la fixation de l'organe de montage à l'implant. Advantageously, the longitudinal axis of the through passage coincides with the longitudinal axis of the central cavity of the emergence face. In this way, the screw is introduced into the through passage and is inserted into the central cavity of the implant ensuring the attachment of the mounting member to the implant.
De préférence, l’ensemble comporte un dispositif d’indexation visuel intégré permettant avantageusement le bon positionnement automatique de l’implant en situation crestale, notamment de façon à pouvoir être prothétiquement utile. Preferably, the assembly comprises an integrated visual indexing device advantageously allowing the correct automatic positioning of the implant in a crestal situation, in particular so as to be able to be prosthetically useful.
Un autre aspect concerne un procédé de montage d’un implant dentaire sur un dispositif de montage. Another aspect relates to a method of mounting a dental implant on a mounting device.
Un autre aspect est un procédé de fixation d’un implant dentaire dans l’os de la mâchoire. Another aspect is a method of securing a dental implant into the jawbone.
L'implant selon l'invention, avantageusement associé au dispositif de montage selon l'invention, permet le contournement des régions atomiques critiques avantageusement grâce à un ensemble de montage rectiligne cylindrique à émergence angulée d'indexation crestale produisant un rattrapage d'axe instantané avec de préférence un système visuel de repérage positionnel pour le chirurgien, de façon à être facilement utilisable pour la fabrication d'une prothèse implanto-portée. BREVE DESCRIPTION DES FIGURES The implant according to the invention, advantageously associated with the mounting device according to the invention, allows the bypass of critical atomic regions advantageously by virtue of a cylindrical rectilinear mounting assembly with angulated emergence of crestal indexing producing instantaneous axis adjustment with preferably a visual positional identification system for the surgeon, so as to be easily usable for the manufacture of an implant-supported prosthesis. BRIEF DESCRIPTION OF THE FIGURES
Les buts, objets, ainsi que les caractéristiques et avantages de l’invention ressortiront mieux de la description détaillée d’un mode de réalisation de cette dernière qui est illustré par les dessins d’accompagnement suivants dans lesquels : La figure 1 représente une vue en perspective éclatée d'un ensemble de montage d'un implant dentaire par un dispositif de montage selon l'invention. The aims, objects, as well as the characteristics and advantages of the invention will emerge more clearly from the detailed description of an embodiment of the latter which is illustrated by the following accompanying drawings in which: FIG. 1 represents a view in exploded perspective of an assembly for mounting a dental implant by a mounting device according to the invention.
La figure 2 représente une vue en coupe longitudinale d'un ensemble de montage d'un implant dentaire par un dispositif de montage assemblé l'un à l'autre. Figure 2 shows a longitudinal sectional view of a mounting assembly of a dental implant by a mounting device assembled to one another.
La figure 3 représente un schéma de l'enveloppe d'un implant dentaire selon l'invention. La figure 4 représente une vue du dessus de l'extrémité proximale et de la zone de fixation d'un implant dentaire selon l'invention. FIG. 3 represents a diagram of the envelope of a dental implant according to the invention. FIG. 4 represents a top view of the proximal end and of the fixing zone of a dental implant according to the invention.
La figure 5 représente un détail A de la figure 3 illustrant le micro filetage de l'implant selon l'invention. FIG. 5 represents a detail A of FIG. 3 illustrating the micro-threading of the implant according to the invention.
La figure 6 représente un détail B de la figure 3 illustrant le macro filetage de l'implant selon l'invention Figure 6 shows a detail B of Figure 3 illustrating the macro threading of the implant according to the invention
La figure 7 représente une vue en coupe de l'organe de montage selon l'invention. FIG. 7 represents a sectional view of the assembly member according to the invention.
La figure 8 représente une vue du dessus de l'extrémité distale l'organe de montage.Figure 8 shows a top view of the distal end of the mounting member.
Les dessins sont donnés à titre d'exemples et ne sont pas limitatifs de l’invention. Ils constituent des représentations schématiques de principe destinées à faciliter la compréhension de l’invention. Cependant, les proportions peuvent être à l'échelle des applications pratiques. The drawings are given by way of example and are not limiting of the invention. They constitute schematic representations of principle intended to facilitate understanding of the invention. However, the proportions can be scaled for practical applications.
DESCRIPTION DÉTAILLÉE DE L’INVENTION DETAILED DESCRIPTION OF THE INVENTION
Avant d’entamer une revue détaillée de modes de réalisation de l’invention, sont énoncées ci-après des caractéristiques optionnelles qui peuvent éventuellement être utilisées en association ou alternativement : Before embarking on a detailed review of embodiments of the invention, optional features are listed below which may optionally be used in combination or alternatively:
- la partie centrale 11 comprend une cavité centrale 18 taraudée destinée à recevoir une vis de fixation 200 ; - The central part 11 comprises a central threaded cavity 18 intended to receive a fixing screw 200;
- la face supérieure de la partie centrale 11 est agencée dans le plan 10 de la face d'émergence 8 ; - l'axe longitudinal de la cavité centrale 18 est dirigé perpendiculairement au plan de la face d’émergence 8 ; - The upper face of the central part 11 is arranged in the plane 10 of the emergence face 8; - the longitudinal axis of the central cavity 18 is directed perpendicular to the plane of the emergence face 8;
- la portion supérieure 3 comprend une partie basale 20, suivant la portion principale 2, de forme cylindrique. - The upper portion 3 comprises a basal part 20, following the main portion 2, of cylindrical shape.
- le corps 102 de l'organe de montage 101 comprend une extrémité proximale 107 destinée à coopérer avec un organe d'entrainement 300 ; - The body 102 of the mounting member 101 comprises a proximal end 107 intended to cooperate with a drive member 300;
- l'extrémité distale 103 du corps 102 de l'organe de montage 101 comprend un plan de connexion de contour elliptique défini par l'intersection de l'extrémité distale 103 avec un plan de coupe incliné par rapport à une direction radiale 151 de l'organe de montage 101 ; - l'organe de montage 101 comprend un passage traversant comprenant une première extrémité débouchant 109 à l'extrémité distale 103 et une deuxième extrémité débouchant 110 à la surface extérieure du corps 102 apte à recevoir une vis de fixation 200 ; - the distal end 103 of the body 102 of the mounting member 101 comprises a connecting plane of elliptical contour defined by the intersection of the distal end 103 with a cutting plane inclined with respect to a radial direction 151 of the 'assembly member 101; - the assembly member 101 comprises a through passage comprising a first end opening 109 at the distal end 103 and a second end opening 110 at the outer surface of the body 102 adapted to receive a fixing screw 200;
- la première extrémité débouchant 109 du passage traversant est configurée pour être au regard de la cavité centrale 11 taraudée de l'implant 1 de sorte à permettre le passage de la vis de fixation 200 dans le passage traversant de l'organe de montage 101 et sa fixation dans la cavité centrale 18 taraudée de l'implant 1. - the first opening end 109 of the through passage is configured to face the central cavity 11 threaded of the implant 1 so as to allow the passage of the fixing screw 200 in the through passage of the mounting member 101 and its fixation in the threaded central cavity 18 of the implant 1.
L'invention concerne un implant dentaire 1 comprenant une portion principale 2 dirigée suivant un axe longitudinal 50 et une portion supérieure 3. La portion principale s'étend depuis une extrémité distale 4 de l'implant jusqu'à la portion supérieure 3. La portion supérieure 3 s'étend jusqu'à une extrémité proximale 5 de l'implant opposée à l'extrémité distale 4. L’extrémité distale 4 est destinée à être enfouie dans l’os de la mâchoire alors que l’extrémité proximale 5 est accessible par l’extérieur pour la réception d’un organe de prothèse dentaire. The invention relates to a dental implant 1 comprising a main portion 2 directed along a longitudinal axis 50 and an upper portion 3. The main portion extends from a distal end 4 of the implant to the upper portion 3. The portion upper 3 extends to a proximal end 5 of the implant opposite to the distal end 4. The distal end 4 is intended to be buried in the jawbone while the proximal end 5 is accessible from the outside for the reception of a dental prosthesis organ.
La portion supérieure 3 comprend une zone de fixation 6 destinée à coopérer avec un dispositif de montage 100 utilisé lors de la mise en place de l’implant. La zone de fixation 6 peut avantageusement également être destinée à coopérer avec un ensemble prothétique. The upper portion 3 comprises a fixing zone 6 intended to cooperate with a mounting device 100 used during the placement of the implant. The fixing zone 6 can advantageously also be intended to cooperate with a prosthetic assembly.
La portion supérieure 3 comprend de manière préférée une partie basale 20, la partie basale 20 est agencée à l'extrémité distale de la portion principale 2, c’est-à-dire dans la zone adjacente à la portion principale 2. La partie basale est avantageusement de forme cylindrique de section circulaire. The upper portion 3 preferably comprises a basal part 20, the basal part 20 is arranged at the distal end of the main portion 2, that is to say in the area adjacent to the main portion 2. The basal part is advantageously of cylindrical shape with a circular section.
L'implant dentaire 1 selon l'invention, et en particulier la portion principale 2, est destinée à être insérée dans l'os de la mâchoire. Au moins la portion principale 2 est dite ostéointégrable. Selon un mode de réalisation, la portion supérieure 3 est, de préférence quant à elle, au moins partiellement enfouie dans les tissus mous de la gencive. The dental implant 1 according to the invention, and in particular the main portion 2, is intended to be inserted into the jaw bone. At least the main portion 2 is said to be osteointegratable. According to one embodiment, the upper portion 3 is preferably at least partially buried in the soft tissues of the gum.
Selon l'invention, la portion supérieure 3 comprend, à l'extrémité proximale 5 de l'implantAccording to the invention, the upper portion 3 comprises, at the proximal end 5 of the implant
1 , une face d'émergence 8 de contour elliptique. La face d'émergence 8 est définie par l'intersection d'un cylindre de section circulaire centrée sur l'axe longitudinal 50 de l'implant avec un plan de coupe incliné par rapport à une direction radiale 51 perpendiculaire à l'axe longitudinal 50. De préférence, le cylindre en question correspond à une enveloppe géométrique formant la continuité de la partie basale 20. 1, an emergence face 8 of elliptical contour. The emergence face 8 is defined by the intersection of a cylinder of circular section centered on the longitudinal axis 50 of the implant with a section plane inclined relative to a radial direction 51 perpendicular to the longitudinal axis 50 Preferably, the cylinder in question corresponds to a geometric envelope forming the continuity of the basal part 20.
La face d'émergence 8 peut également être dénommée émergence crestale. The emergence face 8 can also be referred to as the crestal emergence.
L'axe longitudinal 50 de l'implant 1 s'étend entre l'extrémité proximale 5 et l'extrémité distale 4 en passant avantageusement par le centre de l'implant 1. Ce dernier est avantageusement de symétrie axiale autour de l’axe 50 pour le moins sur la portion principaleThe longitudinal axis 50 of the implant 1 extends between the proximal end 5 and the distal end 4, advantageously passing through the center of the implant 1. The latter is advantageously of axial symmetry around the axis 50 at least on the main portion
2, et aussi sur la portion basale 20 de la portion supérieure 3, lorsque la portion basale 20 est présente. La direction radiale 51 s'entend comme une direction perpendiculaire à l'axe longitudinal 50. 2, and also on the basal portion 20 of the upper portion 3, when the basal portion 20 is present. The radial direction 51 is understood to be a direction perpendicular to the longitudinal axis 50.
La zone de fixation 6 est avantageusement agencée sous le plan 10 de la face d'émergence 8. La zone de fixation 6 est dénommée connectique interne. Avantageusement, la zone de fixation 6 n'est pas proéminente à la surface de la face d'émergence 8. Cependant, la zone de fixation 67 ans avantageusement jusqu’à la face d’émergence 8, qui en constitue la bordure supérieure. The fixing zone 6 is advantageously arranged under the plane 10 of the emergence face 8. The fixing zone 6 is referred to as the internal connector. Advantageously, the fixing zone 6 is not prominent on the surface of the emergence face 8. However, the fixing zone 67 years, advantageously up to the emergence face 8, which constitutes its upper border.
Le plan 10 de la face d'émergence 8 est défini par le plan confondu avec la surface de la face d’émergence 8. The plane 10 of the emergence face 8 is defined by the plane coincident with the surface of the emergence face 8.
Avantageusement, le plan 10 est un plan elliptique angulé. Advantageously, the plane 10 is an angulated elliptical plane.
Selon un mode de réalisation, la zone de fixation 6 comprend une partie centrale saillante 11 présentant un profil externe préférentiellement polygonal 12, par exemple hexagonal. According to one embodiment, the fixing zone 6 comprises a projecting central part 11 having a preferably polygonal outer profile 12, for example hexagonal.
La zone de fixation 6 comprend aussi une ceinture périphérique 13 formant une couronne externe dont la paroi intérieure 14 est avantageusement de section circulaire. D'autres formes de paroi intérieure 14 peuvent être envisagées sans sortir du cadre de l'invention, notamment une paroi intérieure 14 tronconique. Dans ce cadre, la paroi intérieure 14 sera évasée en direction de l'extrémité proximale 3 de l'implant 1 pour coopérer avec le dispositif de montage 100. The fixing zone 6 also comprises a peripheral belt 13 forming an outer ring, the inner wall 14 of which is advantageously of circular section. Other forms of interior wall 14 can be envisaged without departing from the scope of the invention, in particular a frustoconical interior wall 14. In this context, the inner wall 14 will be flared in the direction of the proximal end 3 of the implant 1 to cooperate with the mounting device 100.
La partie centrale saillante 11 et la ceinture périphérique 13 sont séparées par une gorge 17. La gorge 17 présente une paroi extérieure correspondant à la paroi intérieure 14 de la ceinture périphérique 13 et une paroi intérieure correspondant au profil externe de forme polygonale 12 de la partie centrale saillante 11. Le fond de la gorge est de préférence plan et parallèle au plan de la face d’émergence 8. La ceinture périphérique 13 a pour paroi extérieure une partie de la paroi extérieure 16 de la portion supérieure 3 s'étendant jusqu'au contour elliptique de la face d'émergence 8. La ceinture périphérique 13 constitue avantageusement un rebord extérieur de l'extrémité proximale 5 de l'implant dentaire 1. La ceinture périphérique 13 présente avantageusement un contour elliptique défini par le contour elliptique de la face d'émergence 8. The projecting central part 11 and the peripheral belt 13 are separated by a groove 17. The groove 17 has an outer wall corresponding to the inner wall 14 of the peripheral belt 13 and an inner wall corresponding to the polygonal-shaped outer profile 12 of the part. protruding central 11. The bottom of the groove is preferably plane and parallel to the plane of the emergence face 8. The peripheral belt 13 has for outer wall a part of the outer wall 16 of the upper portion 3 extending to to the elliptical contour of the emergence face 8. The peripheral belt 13 advantageously constitutes an outer rim of the proximal end 5 of the dental implant 1. The peripheral belt 13 advantageously has an elliptical contour defined by the elliptical contour of the face emergence 8.
La forme de la ceinture périphérique 13 présentant un contour elliptique et une paroi intérieure 14 préférentiellement circulaire permet d'augmenter l'épaisseur de la ceinture périphérique 13. Cette augmentation d'épaisseur de la ceinture périphérique 13 facilite la fabrication de l'implant et en particulier de cette zone en augmentant la quantité de matière de la ceinture périphérique 13 et ainsi la résistance de l'implant. Cette forme particulière de la ceinture périphérique 13 permet notamment d'avoir une connectique interne par la partie centrale saillante 11 tout en ayant une face d'émergence 8 de contour elliptique dont le plan 10 longitudinal est incliné par rapport à l'axe longitudinal 50 de l'implant 1. La ceinture périphérique 13 joue également un rôle de butée de surface d'application du dispositif de montage 100 de l'implant 1 favorisant ainsi la coopération de l'implant 1 et du dispositif de montage 100. The shape of the peripheral belt 13 having an elliptical contour and a preferably circular inner wall 14 makes it possible to increase the thickness of the peripheral belt 13. This increase in thickness of the peripheral belt 13 facilitates the manufacture of the implant and in particular of this zone by increasing the quantity of material of the peripheral belt 13 and thus the resistance of the implant. This particular shape of the peripheral belt 13 makes it possible in particular to have an internal connection via the projecting central part 11 while having an emergence face 8 of elliptical contour whose longitudinal plane 10 is inclined relative to the longitudinal axis 50 of implant 1. The peripheral belt 13 also acts as an application surface stop for the mounting device 100 of the implant 1, thus promoting cooperation between the implant 1 and the mounting device 100.
De façon préférentielle, la ceinture périphérique 13 et la partie centrale saillante 11 sont de même hauteur, tel que dans le cas illustré aux figures. La ceinture périphérique 13 peut éventuellement être de hauteur supérieure à la partie centrale 11. Preferably, the peripheral belt 13 and the projecting central part 11 are of the same height, as in the case illustrated in the figures. The peripheral belt 13 may optionally be of greater height than the central part 11.
Selon l'invention, le nombre de côtés du profil externe polygonal 11 n'est pas limité. De manière générale, conviendront toutes formes de profils permettant la transmission d’un couple de vissage depuis un dispositif de montage. According to the invention, the number of sides of the polygonal outer profile 11 is not limited. In general, all shapes of profiles will be suitable for transmitting a tightening torque from a mounting device.
La partie centrale saillante 11 assure un centrage du dispositif de montage et un positionnement anti-rotationnel. The projecting central part 11 ensures a centering of the assembly device and a anti-rotational positioning.
La partie centrale saillante 11 comprend préférentiellement une cavité centrale 18 taraudée apte à coopérer avec une vis de fixation 200. The projecting central part 11 preferably comprises a threaded central cavity 18 able to cooperate with a fixing screw 200.
La partie centrale saillante 11 présente une extrémité supérieure formée dans un plan parallèle et avantageusement confondu avec le plan 10 de la face d'émergence 8. The projecting central part 11 has an upper end formed in a parallel plane and advantageously coincident with the plane 10 of the emergence face 8.
La cavité centrale 18 comprend une paroi intérieure circulaire. Avantageusement, la cavité centrale 18 présente un axe longitudinal perpendiculaire au plan 10 de la face d'émergence 8. Préférentiellement, l'axe longitudinal s'étend depuis le centre de la cavité centrale 18. Le centre s'entendant comme le centre de la paroi intérieure circulaire de la cavité centrale 18. The central cavity 18 includes a circular interior wall. Advantageously, the central cavity 18 has a longitudinal axis perpendicular to the plane 10 of the emergence face 8. Preferably, the longitudinal axis extends from the center of the central cavity 18. The center being understood as the center of the circular inner wall of central cavity 18.
De manière préférée, le centre de la cavité centrale 18, au niveau de son embouchure, est porté par l'axe longitudinal 50 de l'implant 1. De cette manière, il n'y a pas de désaxage de la zone de fixation 6. Preferably, the center of the central cavity 18, at its mouth, is carried by the longitudinal axis 50 of the implant 1. In this way, there is no misalignment of the fixing zone 6. .
Avantageusement, le plan 10 de la face d'émergence 8 présente un angle d'inclinaison 7 par rapport à l'axe longitudinal 50 compris entre 40° et 55° à titre d'exemple 53°. Advantageously, the plane 10 of the emergence face 8 has an angle of inclination 7 relative to the longitudinal axis 50 of between 40 ° and 55 °, for example 53 °.
Selon un mode de réalisation illustratif et non limitatif, l'implant 1 est tel qu’illustré aux figures 1 à 3. According to an illustrative and non-limiting embodiment, the implant 1 is as illustrated in Figures 1 to 3.
De façon préférée, l'implant 1 est avantageusement constitué en une seule pièce et à partir d'un seul bloc de matière. On obtient ainsi une plus grande rigidité et une meilleure résistance mécanique de l'implant. Preferably, the implant 1 is advantageously made in a single piece and from a single block of material. This gives greater rigidity and better mechanical strength of the implant.
À titre d'exemple, l'implant est réalisé en titane. For example, the implant is made of titanium.
La structure de la portion principale 2 de l'implant 1 va maintenant être décrite dans un mode de réalisation cependant purement indicatif. The structure of the main portion 2 of the implant 1 will now be described in an embodiment which is however purely indicative.
L'implant 1 comprend, depuis son extrémité distale 4, une première portion 400 de forme tronconique s'évasant depuis l'extrémité distale 4 vers l'extrémité proximale 5 de l'implant 1. L'implant comprend ensuite une deuxième portion 401 de forme tronconique s'évasant en direction de l'extrémité proximale 5 de l'implant. De préférence, l'inclinaison du tronc de cône par rapport à l'axe longitudinal 50 de l'implant 1 est plus importante dans la première portion 400 que dans la deuxième portion 401 . L'implant 1 comprend ensuite une troisième portion 403 de forme cylindrique de section circulaire. L'implant comprend ensuite une quatrième portion 403 tronconique s'évasant en direction de l'extrémité proximale 5. Vient ensuite la portion supérieure 3 de l'implant 1 et avantageusement en premier lieu la portion basale 20 de forme cylindrique de section circulaire. The implant 1 comprises, from its distal end 4, a first portion 400 of frustoconical shape widening out from the distal end 4 towards the proximal end 5 of the implant 1. The implant then comprises a second portion 401 of frustoconical shape widening towards the proximal end 5 of the implant. Preferably, the inclination of the truncated cone relative to the longitudinal axis 50 of the implant 1 is greater in the first portion 400 than in the second portion 401. The implant 1 then comprises a third portion 403 of cylindrical shape of circular section. The implant then comprises a fourth frustoconical portion 403 flaring in the direction of the proximal end 5. Next comes the upper portion 3 of the implant 1 and advantageously firstly the basal portion 20 of cylindrical shape of circular section.
La surface, et en particulier la rugosité des motifs surfaciques, de l'implant est préférentiellement variable selon les portions de celui-ci. The surface, and in particular the roughness of the surface patterns, of the implant is preferably variable depending on the portions thereof.
À titre d'exemple, la première portion 400 et la deuxième portion 401 comprennent un macro filetage 22. La première portion 400 et la deuxième portion 401 sont autoforantes. Cette première portion 400 et la deuxième portion 401 forment avantageusement un segment apical conique à extrémité autoforante. Avantageusement, la première portion 400 comprend une rainure assurant l'évacuation des débris vers l'extérieur lors de l'insertion de l'implant. À titre d'exemple, la troisième portion 402 et la quatrième portion 403 comprennent un micro filetage 21 préférentiellement autotaraudant. La troisième portion 402 et la quatrième portion 4 facilitent la progression micrométrique oblique de l'implant 1 jusqu'à position finale. By way of example, the first portion 400 and the second portion 401 comprise a macro thread 22. The first portion 400 and the second portion 401 are self-drilling. This first portion 400 and the second portion 401 advantageously form a conical apical segment with a self-drilling end. Advantageously, the first portion 400 comprises a groove ensuring the evacuation of the debris to the outside during the insertion of the implant. By way of example, the third portion 402 and the fourth portion 403 comprise a micro-thread 21 preferably self-tapping. The third portion 402 and the fourth portion 4 facilitate the oblique micrometric progression of the implant 1 to the final position.
L'implant 1 présente avantageusement une morphologie triphasique. On entend par triphasique que l'implant comprend trois phases à fonctionnalités distinctes : la première portion 400 et la deuxième portion 401 , puis la troisième portion 402 et enfin la quatrième portion 403. Ces trois phases sont adaptées aux densités osseuses successivement rencontrées lors de l'ostéotomie transverse spécifique lors de la mise en place de l'implant. Avantageusement, l'insertion de l'implant dans l'os des mâchoires est réalisée de façon transverse c'est-à-dire inclinée, de préférence d’un angle strictement inférieur à 90°, par rapport à la verticale définie selon le grand axe des dents naturelles préférentiellement depuis le sommet de la crête osseuse vers les piliers majeurs du squelette maxillo-facial. Lors de l'insertion de l'implant dans l'os de la mâchoire, l'implant va rencontrer successivement un os crestal moyennement dense dénommé étage crestal, puis va pénétrer l'os spongieux peu dense, dénommé étage médullaire, pour finalement venir s'ancrer dans la poutre dense de l'os basal également dénommée étage apical basale. The implant 1 advantageously has a three-phase morphology. The term “triphasic” is understood to mean that the implant comprises three phases with distinct functionalities: the first portion 400 and the second portion 401, then the third portion 402 and finally the fourth portion 403. These three phases are adapted to the bone densities successively encountered during the procedure. specific transverse osteotomy during implant placement. Advantageously, the insertion of the implant into the jawbone is carried out transversely, that is to say inclined, preferably at an angle strictly less than 90 °, with respect to the vertical defined according to the large axis of natural teeth preferentially from the top of the bony crest towards the major pillars of the maxillofacial skeleton. During the insertion of the implant into the jawbone, the implant will successively meet a moderately dense crestal bone called the crestal stage, then will penetrate the spongy spongy bone, called the medullary stage, to finally come s 'anchor in the dense beam of basal bone also referred to as the basal apical stage.
L'implant selon l'invention présente avantageusement une hauteur totale entre l'extrémité distale 4 et l'extrémité proximale 5 supérieure ou égale à 15 mm, préférentiellement de 18 mm. The implant according to the invention advantageously has a total height between the distal end 4 and the proximal end 5 greater than or equal to 15 mm, preferably 18 mm.
Selon un autre aspect, l'invention concerne également un dispositif de montage 100. Le dispositif de montage 100 est apte à coopérer avec un implant 1 tel que décrit ci-dessus. Le dispositif de montage 100 comprend un organe de montage 101 comprenant un corps 102 cylindrique de section circulaire. Le corps 102 comprend une extrémité distale 103 opposée à une extrémité proximale 107. Le corps 102 est configuré pour coopérer avec l'implant 1 , plus particulièrement avec la face d'émergence 8 et la zone de fixation 6, par son extrémité distale 103. Le corps est configuré pour coopérer par son extrémité proximale 107 avec un organe d'entraînement 300. According to another aspect, the invention also relates to an assembly device 100. The assembly device 100 is able to cooperate with an implant 1 as described above. The mounting device 100 comprises a mounting member 101 comprising a cylindrical body 102 of circular section. The body 102 comprises a distal end 103 opposite to a proximal end 107. The body 102 is configured to cooperate with the implant 1, more particularly with the emergence face 8 and the fixing zone 6, through its distal end 103. The body is configured to cooperate via its proximal end 107 with a drive member 300.
L'organe entraînement 300 est par exemple un mandrin tel qu'illustré sur les figures 1 et 2. L'organe d’entraînement 300 peut-être monobloc ou non. Avantageusement, l'organe d’entraînement 300 coopère avec l'extrémité proximale 107 du corps 102 du dispositif de montage 100 de sorte à transmettre un couple autour de l'axe longitudinal 50 de la portion principale de l'implant 1 . The drive member 300 is for example a mandrel as illustrated in Figures 1 and 2. The drive member 300 may or may not be in one piece. Advantageously, the drive member 300 cooperates with the proximal end 107 of the body 102 of the mounting device 100 so as to transmit a torque around the longitudinal axis 50 of the main portion of the implant 1.
L'organe d'entraînement 300 peut comprendre selon un mode de réalisation un contre- angle permettant de décaler un module d'actionnement comprenant un moteur et un micro réducteur. The drive member 300 may comprise, according to one embodiment, a contra-angle making it possible to shift an actuation module comprising a motor and a micro reducer.
De manière préférée, le corps 102 de l'organe de montage 101 comprend à son extrémité proximale 107 une connectique destinée à coopérer avec l'organe d'entraînement 300. La connectique agencée à l'extrémité proximale 107 est avantageusement interne. L'extrémité proximale 107 comprend un polygone tel que par exemple un octogone, interne. L'extrémité proximale 107 présente donc une dépression de section polygonale destinée à coopérer avec l'organe d'entraînement 300. L'organe d'entraînement 300 comprend une extrémité distale destinée à coopérer avec l'extrémité proximale 107 du corps 102 de l'organe de montage 101. L'extrémité distale de l'organe d'entraînement comprend avantageusement une portion de section polygonale de dimensions et de forme complémentaires à la dépression de section polygonale de l'extrémité proximale 107. La coopération polygonale entre l'organe d'entraînement 300 et le corps 102 de l'organe de montage permet une transmission optimale du couple de rotation autour de l'axe longitudinal 150 de l'implant 1. L'axe longitudinal 150 étant avantageusement confondu avec l'axe longitudinal 250 de l'organe de montage 100 et avantageusement avec l'axe longitudinal 350 de l'organe d'entraînement 300, la transmission du couple et la rotation de l'implant dans l'axe longitudinal de l'ensemble assurent une pénétration contrôlée et optimisée de l'implant 1 dans l'os de la mâchoire. Preferably, the body 102 of the mounting member 101 comprises at its proximal end 107 a connector intended to cooperate with the drive member 300. The connector arranged at the proximal end 107 is advantageously internal. The proximal end 107 comprises a polygon such as for example an octagon, internal. The proximal end 107 therefore has a depression of polygonal section intended to cooperate with the drive member 300. The drive member 300 comprises a distal end intended to cooperate with the proximal end 107 of the body 102 of the mounting member 101. The distal end of the drive member advantageously comprises a portion of polygonal section of dimensions and shape complementary to the depression of polygonal section of the proximal end 107. The polygonal cooperation between the drive member 300 and the body 102 of the mounting member allows optimum transmission of the torque around the shaft. 'longitudinal axis 150 of the implant 1. The longitudinal axis 150 being advantageously coincident with the longitudinal axis 250 of the mounting member 100 and advantageously with the longitudinal axis 350 of the drive member 300, the transmission torque and the rotation of the implant in the longitudinal axis of the assembly ensure controlled and optimized penetration of the implant 1 into the jawbone.
L'extrémité distale 103 du corps 102 de l'organe de montage 101 comprend un plan de connexion de contour elliptique défini par l'intersection de l'extrémité distale avec un plan de coupe incliné par rapport à une direction radiale de l'organe de montage. The distal end 103 of the body 102 of the mounting member 101 includes an elliptical contoured connection plane defined by the intersection of the distal end with a cutting plane inclined with respect to a radial direction of the mounting member. mounting.
L'extrémité distale 103 du corps 102 de l'organe de montage 101 comprend avantageusement une zone de connexion 104 destinée à coopérer avec la zone de fixation 6 de l'implant 1. La zone de connexion 104 est avantageusement une portion mâle destinée à coopérer avec la zone de fixation 6 considérée comme une portion femelle. The distal end 103 of the body 102 of the mounting member 101 advantageously comprises a connection zone 104 intended to cooperate with the fixing zone 6 of the implant 1. The connection zone 104 is advantageously a male portion intended to cooperate. with the fixing zone 6 considered as a female portion.
La zone de connexion 104 comprend de préférence un organe d'emmanchement 105 configuré pour s'insérer dans la gorge 17 de la zone de fixation 6 de l'implant 1. The connection zone 104 preferably comprises a fitting member 105 configured to fit into the groove 17 of the fixing zone 6 of the implant 1.
De manière préférée, l'organe d'emmanchement 105 présente une paroi extérieure 106 de forme et de dimensions correspondantes à celles de la paroi intérieure 14 de la ceinture périphérique 13 afin que leurs surfaces coopèrent à l'assemblage. On entend par là que, si la ceinture périphérique 13 est annulaire, la paroi extérieure 106 le sera également, avec un diamètre légèrement inférieur suivant des conditions de jeu prédéterminées. L'introduction de l'organe d'emmanchement 105 dans la gorge 17 de la zone de fixation 6 de l'implant 1 permet de faciliter l'assemblage de l'implant 1 et de l'organe de montage 101 en limitant les basculements possibles de l'organe de montage 101 relativement à l'implant 1. Preferably, the fitting member 105 has an outer wall 106 of shape and dimensions corresponding to those of the inner wall 14 of the peripheral belt 13 so that their surfaces cooperate in the assembly. By this is meant that, if the peripheral belt 13 is annular, the outer wall 106 will also be, with a slightly smaller diameter according to predetermined playing conditions. The introduction of the fitting member 105 in the groove 17 of the fixing zone 6 of the implant 1 makes it possible to facilitate the assembly of the implant 1 and the mounting member 101 by limiting the possible tilting. of the mounting member 101 relative to the implant 1.
De manière préférée, l'organe d'emmanchement 105 présente une paroi intérieure 113 de forme et de dimensions correspondantes à celle du profil externe polygonal 12 de la partie centrale saillante 11. On entend par là que la paroi intérieure 113 sera avantageusement de la même forme polygonale et de dimensions légèrement inférieures suivant des conditions de jeu prédéterminées. Preferably, the fitting member 105 has an inner wall 113 of shape and dimensions corresponding to that of the polygonal outer profile 12 of the projecting central part 11. By this is meant that the inner wall 113 will advantageously be of the same. polygonal shape and slightly smaller dimensions according to predetermined playing conditions.
La coopération de l'organe d'emmanchement 105 avec, d'une part la ceinture périphérique 13, et d'autre part avec la partie centrale 11 , permet d'assurer un complément de reprise des efforts sur l'implant 1 . The cooperation of the fitting member 105 with, on the one hand the peripheral belt 13, and on the other hand with the central part 11, makes it possible to ensure additional absorption of the forces on the implant 1.
On forme ainsi une autre zone de contact surfacique entre l'implant 1 et l'organe de montage 101. Ce contact surfacique est d'une grande dimension et avantageusement continu sur tout le pourtour de l'implant en ce qui l'assure d’une grande résistance mécanique à l'organe de montage 101. Le corps 102 de l'organe de montage 101 comprend avantageusement un passage traversant 108 destiné à recevoir une vis 200. Le passage traversant 108 comprend une première extrémité 109 débouchant à l'extrémité distale 103 du corps 102. Le passage traversant 108 comprend une deuxième extrémité 110 débouchant à la surface extérieure 111 du corps 102. L'extrémité 110 est configurée pour recevoir une vis 200 y compris une tête 201 de vis, c'est-à-dire que la section du passage traversant 108 au niveau de l'extrémité 110 est de dimensions supérieures à la section de la tête 201 d'une vis. Another area of surface contact is thus formed between the implant 1 and the mounting member 101. This surface contact is of a large dimension and advantageously continuous over the entire periphery of the implant, which ensures it of. high mechanical resistance to the mounting member 101. The body 102 of the mounting member 101 advantageously comprises a through passage 108 intended to receive a screw 200. The through passage 108 comprises a first end 109 opening out at the distal end 103 of the body 102. The through passage 108 comprises a second end 110 opening out to the outer surface 111 of the body 102. The end 110 is configured to receive a screw 200 including a screw head 201, that is to say the section of the through passage 108 at the level of the end 110 is larger than the section of the head 201 of a screw.
L'extrémité 110 du passage traversant 108 est avantageusement agencée à l'extrémité distale 103 de sorte à être en regard de la cavité centrale 18 de la partie centrale 11 lorsque l'organe de montage est assemblé avec l'implant 1 . The end 110 of the through passage 108 is advantageously arranged at the distal end 103 so as to be facing the central cavity 18 of the central part 11 when the mounting member is assembled with the implant 1.
Avantageusement, le passage traversant 108 est configuré pour retenir une vis 200 par sa tête 201 , c'est-à-dire que la section du passage traversant 108 présente un rétrécissement, avantageusement à une distance de l’extrémité 110, supérieur à la hauteur de la tête 201 de la vis de sorte que la tête 201 de la vis soit enfouie dans le volume du corps 102 lorsqu'elle est assemblée à l'implant 1. Le rétrécissement 114 est de dimensions inférieures à la section de la tête 201 d'une vis 200 et supérieures à la section d'un corps 202 de vis. Advantageously, the through passage 108 is configured to retain a screw 200 by its head 201, that is to say that the section of the through passage 108 has a narrowing, advantageously at a distance from the end 110, greater than the height of the head 201 of the screw so that the head 201 of the screw is buried in the volume of the body 102 when it is assembled with the implant 1. The constriction 114 is of smaller dimensions than the section of the head 201 d a screw 200 and above the section of a screw body 202.
Le dispositif de montage 100 comprend avantageusement l'organe de montage 100 et une vis 200 agencée dans le passage traversant 108. The mounting device 100 advantageously comprises the mounting member 100 and a screw 200 arranged in the through passage 108.
Le passage traversant 108 présente un axe longitudinal 250 dans le prolongement de l'axe longitudinal de la cavité centrale 18. De cette manière, lorsque l'organe de montage 100 est assemblé à l'implant 1 , le passage traversant 108 et la cavité centrale 18 forment un canal de réception de la vis 200. Le passage traversant 108 et la cavité centrale 18 sont dans un même axe. The through passage 108 has a longitudinal axis 250 in the extension of the longitudinal axis of the central cavity 18. In this way, when the mounting member 100 is assembled to the implant 1, the through passage 108 and the central cavity 18 form a channel for receiving the screw 200. The through passage 108 and the central cavity 18 are in the same axis.
Suivant un autre aspect, l'invention concerne un procédé d'assemblage d'un dispositif de montage 100 et d’un implant dentaire 1. Le procédé d'assemblage comprend une étape d'assemblage de l'implant dentaire 1 et d'un organe de montage 101. Cette étape d'assemblage comprend l'application de l'extrémité distale du corps 102 de l'organe de montage 101 sur l'extrémité proximale 5 de l'implant 1 . De manière préférée cette application assure l'introduction de l'organe d'emmanchement 105 dans la gorge 17. De manière complémentaire, lors de cette application, l'organe d'emmanchement 105 inséré dans la gorge 17 assure la mise en contact surfacique de la paroi intérieure 14 de la ceinture périphérique 13 et de la paroi extérieure de l'organe d'emmanchement 105 et, de manière alternative ou complémentaire, la mise en contact surfacique du profil externe polygonal 12 de la partie centrale 11 et de la paroi intérieure de l'organe d'emmanchement 105. According to another aspect, the invention relates to a method for assembling an assembly device 100 and a dental implant 1. The assembly method comprises a step of assembling the dental implant 1 and a dental implant 1. mounting member 101. This assembly step comprises applying the distal end of the body 102 of the mounting member 101 to the proximal end 5 of the implant 1. Preferably, this application ensures the insertion of the fitting member 105 in the groove 17. In a complementary manner, during this application, the fitting member 105 inserted in the groove 17 ensures the surface contact of the inner wall 14 of the peripheral belt 13 and of the outer wall of the fitting member 105 and, alternatively or in addition, the surface contact of the polygonal outer profile 12 of the central part 11 and of the inner wall of the fitting member 105.
Préférentiellement, d'autres contacts surfaciques sont également assurés lors de cette étape d'assemblage. De manière préférée, la surface supérieure de la ceinture périphérique 13 vient au contact de la surface inférieure de l'extrémité distale 103 de l'organe de montage 100. Ce contact surfacique est important, du fait notamment du contour elliptique de la ceinture périphérique 13 assurant un maintien dans l'axe du corps 102 et de l'implant 1 lors de cette étape d'assemblage. Le procédé d'assemblage comprend avantageusement une étape ultérieure de fixation de l'organe de montage 101 et de l'implant dentaire 1. Cette étape de fixation comprend l'insertion d'une vis 200 dans le passage traversant 108 du corps 102. La vis 200 est introduite par la deuxième extrémité débouchant de 110 du passage traversant 108. Avantageusement, la vis 200 vient buter par sa tête 201 contre le rétrécissement 114 du passage traversant 108. Le corps de vis 200 s'insérant dans la cavité centrale 18 taraudée. La vis 200 est vissée jusqu'à sa fin de course dans la cavité centrale 18. La vis 200 assure ainsi la fixation de l'organe de montage 101 sur l'implant 1 . Preferably, other surface contacts are also provided during this assembly step. Preferably, the upper surface of the peripheral belt 13 comes into contact with the lower surface of the distal end 103 of the mounting member 100. This surface contact is important, in particular because of the elliptical contour of the peripheral belt 13. ensuring maintenance in the axis of the body 102 and of the implant 1 during this assembly step. The assembly method advantageously comprises a subsequent step of fixing the mounting member 101 and the dental implant 1. This fixing step comprises the insertion of a screw 200 in the through passage 108 of the body 102. The screw 200 is introduced by the second end emerging from 110 of the through passage 108. Advantageously, the screw 200 abuts by its head 201 against the constriction 114 of the through passage 108. The screw body 200 is inserted into the central cavity 18 threaded . The screw 200 is screwed until its end of travel in the central cavity 18. The screw 200 thus secures the mounting member 101 on the implant 1.
Selon une possibilité préférée, le procédé d'assemblage comprend une étape d'assemblage de l'organe d'entraînement 300 sur l'organe de montage 101. Préférentiellement, l'organe entraînement 300 coopère avec l'extrémité proximale 107 du corps 102. According to a preferred possibility, the assembly method comprises a step of assembling the drive member 300 on the mounting member 101. Preferably, the drive member 300 cooperates with the proximal end 107 of the body 102.
De manière préférée, lors de l'actionnement de l'organe d'entraînement 300, un mouvement de rotation est imprimé à l'organe d'entraînement 300 qui est transmis à l'organe de montage 101 par la connexion de l'organe d'entraînement 300 et dudit organe de montage 101 . Le mouvement de rotation est également transmis à l'implant 1 par la connexion de l'organe de montage 101 et de l'implant 1. Lors de la mise en rotation de l'ensemble de montage, la vis de montage 200 ne reprend que très peu, voire pas du tout, les efforts (essentiellement un couple) qui sont repris par la partie centrale 11 de l'implant coopérant avec l'organe d'emmanchement 105 du corps 102. Preferably, when actuating the drive member 300, a rotational movement is imparted to the drive member 300 which is transmitted to the mounting member 101 by the connection of the member d drive 300 and said mounting member 101. The rotational movement is also transmitted to the implant 1 by the connection of the mounting member 101 and the implant 1. When the mounting assembly is rotated, the mounting screw 200 only resumes. very little, if at all, the forces (essentially a couple) which are taken up by the central part 11 of the implant cooperating with the fitting member 105 of the body 102.
De manière préférée, l'ensemble prothétique est assemblé sur l'implant 1 après retrait de l'organe de montage 101 . Preferably, the prosthetic assembly is assembled on the implant 1 after removal of the mounting member 101.
Selon une possibilité préférée de l'invention, l'implant 1 comprend un élément d'indexation externe. Préférentiellement, l'élément d'indexation est formé par le passage traversant 108 de la vis 200. L'élément d'indexation permet une installation de l'implant dans une position finale facilement repérable pour être utilisé pour le positionnement de l'ensemble prothétique sans nécessiter de recours à des piliers angulés de rattrapage d'angle.According to a preferred possibility of the invention, the implant 1 comprises an external indexing element. Preferably, the indexing element is formed by the through passage 108 of the screw 200. The indexing element allows installation of the implant in an easily identifiable final position to be used for positioning the prosthetic assembly. without requiring the use of angulated angle take-up pillars.
Préférentiellement, l'élément d'indexation permet un placement automatique de la face d'émergence 8 dans un couloir prothétique. Preferably, the indexing element allows automatic placement of the emergence face 8 in a prosthetic corridor.
Avantageusement, l'ensemble prothétique destiné à être assemblé à l'implant 1 selon l'invention comprend une extrémité distale dotée d’un plan de connexion de contour elliptique défini par l'intersection de l'extrémité distale avec un plan de coupe incliné par rapport à une direction radiale de l'organe de montage. Advantageously, the prosthetic assembly intended to be assembled to the implant 1 according to the invention comprises a distal end provided with a connection plane of elliptical contour defined by the intersection of the distal end with a cutting plane inclined by relative to a radial direction of the assembly member.
L'implant dentaire selon l'invention et avantageusement le dispositif de montage associé répond aux défis des mâchoires atrophiées présentant des difficultés anatomiques majeures hors de portée des implants axiaux traditionnels actuellement sur le marché. L'invention permet avantageusement de supprimer le recours à des greffes osseuses préalables lourdes et imprévisibles et de permettre à grand nombre de patients, notamment des personnes âgées, d'accéder rapidement à des dents fixes. The dental implant according to the invention and advantageously the associated mounting device responds to the challenges of atrophied jaws presenting major anatomical difficulties beyond the reach of traditional axial implants currently on the market. The invention advantageously makes it possible to eliminate the need for heavy and unpredictable preliminary bone grafts and to allow a large number of patients, in particular the elderly, to have rapid access to fixed teeth.
L'implant dentaire selon l'invention présente un placement oblique décalé différent de celui d'un implant traditionnel se fixant de façon verticale dans l'os résiduel selon l'axe de la dent prothétique. The dental implant according to the invention has an oblique offset placement different from that of a traditional implant which is fixed vertically in the residual bone along the axis of the prosthetic tooth.
L'implant et le dispositif de montage selon l'invention peuvent être utilisés en chirurgie guidée grâce à l’organe de montage servant avantageusement de porte-implant agencé dans le prolongement de la portion principale de l'implant. The implant and the mounting device according to the invention can be used in guided surgery thanks to the mounting member advantageously serving as an implant holder arranged in the extension of the main portion of the implant.
L’invention n’est pas limitée aux modes de réalisations précédemment décrits et s’étend à tous les modes de réalisation couverts par les revendications. The invention is not limited to the embodiments described above and extends to all the embodiments covered by the claims.
LISTE DES REFERENCES LIST OF REFERENCES
1. implant dentaire 1.dental implant
2. portion principale 2. main portion
3. portion supérieure 3.top portion
4. extrémité distale (ou apicale) 4.distal (or apical) end
5. extrémité proximale (ou crestale) 5.proximal end (or crestal)
6. zone de fixation 6.fixing area
7. angle d'inclinaison du plan de la face d'émergence 7. angle of inclination of the plane of the emergence face
8. face d'émergence 8.emergence face
9. contour 9.outline
10. plan de la face d'émergence 10. plan of the emergence face
11 . partie centrale 11. central part
12. profil externe polygonale 12. polygonal external profile
13. ceinture périphérique 13.peripheral belt
14. paroi intérieure 14. inner wall
15. paroi extérieure 15. outer wall
16. paroi extérieure 16. outer wall
17. gorge 17. throat
18. cavité centrale 18. central cavity
19. face supérieure de la partie centrale saillante 19. upper face of the protruding central part
20. partie basale 20. basal part
21 . micro filetage 21. micro thread
22. macro filetage 22. macro threading
23. surface supérieure de la ceinture périphérique 23. upper surface of the peripheral belt
50. axe longitudinal de l'implant 50. longitudinal axis of the implant
51 . direction radiale 51. radial direction
100. dispositif de montage 100. mounting device
101. organe de montage 101. assembly component
102. corps cylindrique 102. cylindrical body
103. extrémité distale 103. distal end
104. zone de connexion 104. login area
105. organe d'emmanchement 105. fitting member
106. paroi extérieure de l'organe d'emmanchement 106. outer wall of the press-fit member
107. extrémité proximale 108. passage traversant 107. proximal end 108. crossing passage
109. première extrémité débouchant 109. first end opening
110. deuxième extrémité débouchant 110. second end opening
111. surface extérieure 111. outer surface
112. polygone interne 112. internal polygon
113. paroi intérieure de l'organe d'emmanchement 113. inner wall of the press-fit member
114. Rétrécissement 114. Narrowing
115. contour elliptique 115. elliptical outline
116. surface inférieure de la zone de connexion 116. bottom surface of the connection area
150. axe longitudinal de l'organe de montage 150. longitudinal axis of the assembly member
151. direction radiale 151. radial direction
152. point d'intersection de l'axe longitudinal de l'implant et de la direction radiale152. point of intersection of the longitudinal axis of the implant and the radial direction
200. vis de fixation 200. fixing screws
201. tête de vis pouvant servir d’index de bon positionnement visuel de l’émergence crestale de l’implant ; elle peut comporter un repère visuel à cet effet 201. screw head that can serve as an index of good visual positioning of the crestal emergence of the implant; it may include a visual marker for this purpose
202. corps de vis 202. screw body
250. axe longitudinal du passage transversal 250. longitudinal axis of the transverse passage
300. organe d'entraînement 300. drive unit
301 . octogone externe 301. external octagon
350. axe longitudinal de l'organe d'entraînement 350. longitudinal axis of the drive member
400. première partie tronconique 400. first tapered part
401 . deuxième partie tronconique 401. second frustoconical part
402. troisième partie cylindrique 402. third cylindrical part
403. quatrième partie tronconique 403. fourth frustoconical part
450. axe longitudinal de la cavité centrale. 450. longitudinal axis of the central cavity.

Claims

REVENDICATIONS
1. Implant dentaire (1) comprenant une portion principale (2), dirigée suivant un axe longitudinal (50), et une portion supérieure (3), la portion principale (2) s’étendant depuis une extrémité distale (4) de l’implant jusqu’à la portion supérieure (3), la portion supérieure (3) s’étendant jusqu’à une extrémité proximale (5) de l’implant opposée à l’extrémité distale (4) et étant munie d'une zone de fixation (6) d’un dispositif de montage (100) de l’implant, caractérisé en ce que la portion supérieure (3) comprend, à l’extrémité proximale, une face d'émergence (8) de contour elliptique (9) définie par l'intersection d’un cylindre de section circulaire centré sur l’axe longitudinal avec un plan de coupe incliné par rapport à une direction radiale (51) perpendiculaire à l’axe longitudinal (50), et que la zone de fixation (6) est agencée sous le plan (10) de la face d'émergence (8) et comprend une partie centrale (11) saillante présentant un profil externe polygonal ainsi qu’une ceinture périphérique (13) dont la paroi intérieure (14) est de section circulaire et dont la paroi extérieure est formée par une partie de la paroi extérieure (16) de la portion supérieure (2) s’étendant jusqu’au contour elliptique de la face d'émergence (8), la partie centrale (11) saillante et la ceinture périphérique (13) étant séparées par une gorge (17). 1. Dental implant (1) comprising a main portion (2), directed along a longitudinal axis (50), and an upper portion (3), the main portion (2) extending from a distal end (4) of the 'implant up to the upper portion (3), the upper portion (3) extending to a proximal end (5) of the implant opposite the distal end (4) and being provided with a zone fixing (6) of a mounting device (100) of the implant, characterized in that the upper portion (3) comprises, at the proximal end, an emergence face (8) of elliptical contour (9 ) defined by the intersection of a cylinder of circular section centered on the longitudinal axis with a section plane inclined with respect to a radial direction (51) perpendicular to the longitudinal axis (50), and that the fixing zone (6) is arranged under the plane (10) of the emergence face (8) and comprises a projecting central part (11) having a polygonal external profile as well as a belt peripheral (13) whose inner wall (14) is of circular section and whose outer wall is formed by part of the outer wall (16) of the upper portion (2) extending to the elliptical contour of the face emergence (8), the projecting central part (11) and the peripheral belt (13) being separated by a groove (17).
2. Implant (1) selon la revendication précédente, dans lequel la partie centrale (11) comprend une cavité centrale (18) taraudée destinée à recevoir une vis de fixation (200). 2. Implant (1) according to the preceding claim, wherein the central part (11) comprises a central cavity (18) threaded for receiving a fixing screw (200).
3. Implant (1) selon l'une quelconque des revendications précédentes, dans lequel la face supérieure (19) de la partie centrale (11) est agencée dans le plan (10) de la face d'émergence (8). 3. Implant (1) according to any one of the preceding claims, wherein the upper face (19) of the central part (11) is arranged in the plane (10) of the emergence face (8).
4. Implant (1) selon l'une quelconque des revendications précédentes, dans lequel l'axe longitudinal de la cavité centrale (18) est dirigé perpendiculairement au plan (10) de la face d’émergence. (8) 4. Implant (1) according to any preceding claim, wherein the longitudinal axis of the central cavity (18) is directed perpendicular to the plane (10) of the emergence face. (8)
5. Implant (1) selon l'une quelconque des revendications précédentes, dans lequel la portion supérieure (3) comprend une partie basale (20), suivant la portion principale (2), de forme cylindrique. 5. Implant (1) according to any one of the preceding claims, wherein the upper portion (3) comprises a basal part (20), along the main portion (2), of cylindrical shape.
6. Dispositif de montage (100) d'un implant (1) , apte à coopérer avec un implant (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un organe de montage (101) comprenant un corps cylindrique (102) de section circulaire comprenant une extrémité distale (103) comprenant une zone de connexion (104) apte à coopérer de manière complémentaire avec la zone de fixation (6). 6. Mounting device (100) of an implant (1), adapted to cooperate with an implant (1) according to any one of the preceding claims, characterized in that it comprises a mounting member (101) comprising a cylindrical body (102) of circular section comprising a distal end (103) comprising a connection zone (104) able to cooperate in a complementary manner with the fixing zone (6).
7. Dispositif de montage (100) selon la revendication précédente, apte à coopérer avec un implant selon 'une quelconque des revendications précédentes, dans lequel la zone de connexion (4) comprend un organe d'emmanchement (105) configuré pour s'insérer dans la gorge (17) de la zone de fixation de l'implant (1) et dont la paroi extérieure (106) est de forme et de dimension correspondantes à celles de la paroi intérieure (14) de la ceinture périphérique (13) et dont la paroi intérieure est de forme et de dimension correspondantes à celles du profil externe polygonal de la partie centrale afin que leurs surfaces coopèrent à l'assemblage. 7. A mounting device (100) according to the preceding claim, adapted to cooperate with an implant according to any preceding claim, wherein the connection area (4) comprises a fitting member (105) configured to be inserted. in the groove (17) of the fixing zone of the implant (1) and whose outer wall (106) is of a shape and dimension corresponding to those of the inner wall (14) of the peripheral belt (13) and the inner wall of which is of shape and dimension corresponding to those of the polygonal outer profile of the central part so that their surfaces cooperate in the assembly.
8. Dispositif de montage (100) selon l’une quelconque des deux revendications précédentes, dans lequel le corps (102) de l'organe de montage (101) comprend une extrémité proximale (107) destinée à coopérer avec un organe d'entrainement (300). 8. A mounting device (100) according to any one of the preceding claims, wherein the body (102) of the mounting member (101) comprises a proximal end (107) intended to cooperate with a drive member. (300).
9. Dispositif de montage (100) selon l'une quelconque des trois revendications précédentes dans lequel l'extrémité distale du corps (102) de l'organe de montage (101) comprend un plan de connexion de contour elliptique défini par l'intersection de l'extrémité distale (103) avec un plan de coupe incliné par rapport à une direction radiale (151) de l'organe de montage (101). 9. A mounting device (100) according to any one of the three preceding claims wherein the distal end of the body (102) of the mounting member (101) comprises an elliptical contoured connection plane defined by the intersection. of the distal end (103) with a cutting plane inclined relative to a radial direction (151) of the mounting member (101).
10. Dispositif de montage (100) selon l'une quelconque des quatre revendications précédentes, dans lequel l'organe de montage (101) comprend un passage (108) traversant comprenant une première extrémité débouchant (109) à l'extrémité distale (103) et une deuxième extrémité débouchant (110) à la surface extérieure (112) du corps (102) apte à recevoir une vis de fixation (200). 10. A mounting device (100) according to any one of the four preceding claims, wherein the mounting member (101) comprises a passage (108) through comprising a first end opening (109) at the distal end (103). ) and a second end opening (110) to the outer surface (112) of the body (102) capable of receiving a fixing screw (200).
11. Dispositif de montage (100) selon la revendication précédente d'un implant selon la revendication 2, dans lequel la première extrémité débouchant (109) du passage traversant est configurée pour être au regard de la cavité centrale (11) taraudée de l'implant (1) de sorte à permettre le passage de la vis de fixation (200) dans le passage traversant de l'organe de montage (101) et sa fixation dans la cavité centrale (18) taraudée de l'implant (1). 11. A mounting device (100) according to the preceding claim of an implant according to claim 2, wherein the first opening end (109) of the through passage is configured to be facing the central cavity (11) threaded of the implant (1) so as to allow the passage of the fixing screw (200) in the through passage of the mounting member (101) and its fixing in the central cavity (18) threaded of the implant (1).
12. Ensemble de montage d'un implant dentaire selon l'une quelconque des revendications 1 à 5 par un dispositif de montage (100) selon l'une quelconque des revendications 6 à 11 , dans lequel l'axe longitudinal (50) de la portion principale (2) de l'implant (1) est confondu avec l'axe longitudinal (150) de l'organe de montage (101). 12. Assembly for mounting a dental implant according to any one of claims 1 to 5 by a mounting device (100) according to any one of claims 6 to 11, wherein the longitudinal axis (50) of the main portion (2) of the implant (1) coincides with the longitudinal axis (150) of the mounting member (101).
13. Ensemble de montage d’un implant dentaire selon la revendication précédente, comportant un dispositif d’indexation visuel intégré permettant le bon positionnement automatique de l’implant en situation crestale de façon à pouvoir être prothétiquement utile. 13. Assembly of a dental implant according to the preceding claim, comprising an integrated visual indexing device allowing the correct automatic positioning of the implant in a crestal situation so as to be able to be prosthetically useful.
EP20792445.7A 2019-10-24 2020-10-22 Guided oblique transverse anatomical implant Withdrawn EP4048191A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1911943A FR3102355A1 (en) 2019-10-24 2019-10-24 Guided anatomical oblique transverse implant
PCT/EP2020/079690 WO2021078830A1 (en) 2019-10-24 2020-10-22 Guided oblique transverse anatomical implant

Publications (1)

Publication Number Publication Date
EP4048191A1 true EP4048191A1 (en) 2022-08-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20792445.7A Withdrawn EP4048191A1 (en) 2019-10-24 2020-10-22 Guided oblique transverse anatomical implant

Country Status (3)

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EP (1) EP4048191A1 (en)
FR (1) FR3102355A1 (en)
WO (1) WO2021078830A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9420038U1 (en) * 1994-12-14 1995-02-09 Hartmann, Alexander, 79104 Freiburg Implant device
EP3106121A1 (en) * 2015-06-19 2016-12-21 Nobel Biocare Services AG Placement device for a dental component
IT201800002265A1 (en) * 2018-01-31 2019-07-31 Biomec Srl One-stage dental implant
KR102462085B1 (en) * 2018-02-21 2022-11-01 사우던 임플란츠 (피티와이) 리미티드 Dental implants of asymmetric cheekbones with partial micro-threads/grooves

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WO2021078830A1 (en) 2021-04-29

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