JP2016171997A - Many dentures penetrated and fixed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow optimal and removable fixation of many dentures penetrated and fixed, the dentures that restrict risk of operation by a practitioner and restrict risk of damage, and are supported on an implant with help of means of connection to the implant.SOLUTION: Many dentures 1 penetrated and fixed are fixed on two or more dental implants by using a penetrating/fixing screw 4. The penetrating/fixing screw has a shank 5 with a threaded portion 6 received by being screwed in the dental implants. The penetrating/fixing screw is formed in the many dentures 1 penetrated and fixed, and is captured and held in each bore 7 extending along the axial direction I-I. The penetrating/fixing screw is movable in rotation about the axial direction of each bore, and is movable in translation along the axial direction of the bore between a retracted position and at least one screwed position. In the screwed position, a screw cutting 8 of the threaded portion of the penetrating/fixing screw may not project from the bore.SELECTED DRAWING: Figure 3

Description

  The present invention relates to the field of dental implantology, in particular, using a number of penetration-type prosthesis that are intended to be attached and secured to a plurality of dental implants. It relates to the treatment of loss of teeth from the dental arch.

  A number of penetration-fixed prostheses supported by the implant are secured to several dental implants that are implanted in the patient's maxilla or mandible to form several dental prosthesis Is intended to rest on the patient's dental arch. The prosthesis is fixed to the implant by fixing a screw that penetrates the prosthesis, and each screw penetrates and secures the respective implant, hence “transfixed prosthesis” and “penetration” Expressed as “fixing screw”. If necessary, the prosthesis must be removable, for example for repair.

  For reasons related to mechanical stability, in particular for reasons related to the retention of the implant in the maxilla or mandible, the implants are oriented in an oblique axial direction relative to each other and their axial orientation Is generally oblique to the general surface of the dental arch.

  Angled abutments are frequently used because of the oblique orientation of the implants relative to each other. An angled abutment is an intermediate piece intended to be attached to an implant in a first axial direction, with an internally threaded cavity oriented in a second axial direction that forms an angle with the first direction. Have. The inner threaded cavity receives a through-fixing screw in the second axial direction. The use of an abutment increases the number of parts that the practitioner manipulates and greatly complicates his work. This is because the abutment needs to have a precise height, angle and orientation.

  Moreover, in order to ensure that a large number of dentures that are fixed through are properly fitted in the mouth, and to allow the practitioner to check their suitability before fixing it, It is necessary to start with a step placed on the patient's dental arch. During this placement, the practitioner will be able to insert multiple dentures that will be penetrated by translation into his mouth until the multiple dentures that will be penetrated will be placed over the patient's dental arch. In order for the patient to open his mouth as much as possible. The practitioner must then insert a different through-fixing screw into the bore formed in the denture. However, the through-fixing screws have very small dimensions, which makes them difficult to manipulate. Thus, there is a risk that the screw will escape the practitioner and fall into the patient's mouth, with the possibility of the patient swallowing it. This is the case, for example, in US Pat. No. 6,057,056, which describes a number of dentures according to the preamble of the invention according to claim 1.

  In order to limit the risk posed by manipulating the through-fixing screw, Applicants have conceived a through-fixing screw that becomes trapped in a bore formed in the denture. In that case, the penetration fixing screw is rigidly connected to the denture before it is introduced into the patient's mouth. In this case, the threaded shank of the through-fixing screw protrudes at least partially below the denture permanently from the bore into which the through-fixing screw is inserted. From the perspective of placing multiple dentures to be fixed through the patient's dental arch, this permanent protrusion may occur when the practitioner introduces multiple dentures to be fixed through the patient's mouth by translation. Combined with a limited degree of opening of the mouth, it poses a risk of high conflict between the threaded shank of the screw and the denture. However, in the event of interference (due to the threaded shank of the screw abutting against the implant) there is a risk that the threading of the through-fixing screw (of very small dimensions) will be damaged. A damaged through-fixing screw can no longer be screwed into a dental implant positioned in line with it, or it can be screwed incorrectly into a dental implant. A damaged penetration screw may even break while being screwed into the dental implant, or it may damage the internal threaded portion of the dental implant that receives it, which is traumatic and is there. This is because dental implants are already osseointegrated and their removal is almost unthinkable in order to remove the broken threaded part of the penetration screw or to replace the dental implant. is there.

  Patent document 2 relates exclusively to a monolithic denture, more specifically, fixing of an abutment on a dental implant using a fixing screw, which is caught in the bore of the dental abutment. Held captive. The fixing screw protrudes permanently from the bore of the dental abutment.

European Patent Application No. 2223667A1 US Pat. No. 6,663,388 B1

  The problem addressed by the present invention is that a number of penetration-fixed dentures supported on the implant with the help of means of connection to the implant which limit the risk of manipulation by the practitioner and limit the risk of damage Is to allow for optimal and removable fixation.

To achieve these objects and others, the present invention provides a number of through-fixed dentures intended to be attached and secured to multiple dental implants using a number of through-fixing screws. Each through-fixation screw proposes a number of dentures to be fixed through, with a shank with a threaded portion intended to be received by screwing into the respective dental implant. According to the present invention,
-Each through-fixing screw is captured and held in a respective bore formed in a number of dentures to be fixed through and extending along the respective axial direction;
Each captive through-screw is movable in rotation about the axial direction of the respective bore and in translation along the axial direction of the respective bore between a retracted position and at least one screwed position; Is possible,
-In the retracted position, threading of the threaded part of the penetration fixing screw does not protrude from the respective bore where the penetration fixing screw is captured and held;
-In the threaded position, the threading of the threaded part of the through-fixing screw at least partly protrudes from the respective bore in which the through-fixing screw is captured and held.

  During the introduction of multiple dentures that are fixed through into the patient's mouth, if the through fixation screw becomes to interfere with the obstacle (or the patient's adjacent teeth) formed by the dental implant, In order to escape from the obstacle, it can be moved to the retracted position. In practice, the practitioner is likely to encounter interference between the penetration screw and the obstacle (or adjacent tooth) formed by the dental implant during the introduction of a number of dentures that are penetrated into the patient's mouth. If you sense a slight resistance, which is a sign of the symptom, to move the fixation screw into the retracted position so that the obstacle is overcome, move toward and away from the maxilla or mandible A moderate reciprocating translation with low amplitude is sufficient. In that case, the practitioner may continue to introduce multiple dentures to be penetrated into the patient's mouth until the multiple dentures to be penetrated are placed over the patient's dental arch.

Advantageously, the following may be provided.
Each shank fixing screw shank terminates in a distal centered portion that continues from the threaded portion;
The distal centering portion has a cross section whose dimension decreases in a direction away from the threaded portion;
-In the retracted position, the through-fixing screw protrudes from the bore where the through-fixing screw is captured and held via all or part of its centralized part.

  When the obstacle is squeezed laterally, the shape of such a centered portion causes the appearance of a force that tends to move the penetrating fixation screw toward its retracted position. Moreover, such a centering portion allows the through-fixing screw to be properly centered with respect to the dental implant in order to facilitate correct screwing into the dental implant.

  Preferably, the centering portion can be substantially conical or frustoconical.

Advantageously, the following may be provided.
The threading of the threaded part of the through-fixing screw has a first threaded part, and the threading of the threaded part of the through-fixing screw continues from the first threaded part to the centering part A second threaded portion extending;
The first threaded portion has a constant outer diameter;
The second threaded portion has an outer diameter that decreases in the direction of the centering portion;

  The second threaded portion, whose outer diameter decreases in the direction of the centering portion, progressively engages within the internally threaded portion of the implant that is positioned coincident with it.

  Preferably, the threading of the threaded part of the through-fixing screw may have at least two threads, preferably three threads. Thus, the practitioner must apply less screw rotation to the screw to ensure that the screw is engaged within the dental implant by being held on the dental implant with a satisfactory retention force. I must. In addition, the threading course of the through-fixing screw is further reduced to engage the dental implant by being held in the dental implant by a satisfactory value of holding force. It is possible to further limit the size of the fixing screw in the axial direction, which contributes to facilitating the introduction of the denture into the patient's mouth.

The first specific embodiment of the present invention may advantageously provide:
The through-fixing screw has a portion with an enlarged diameter portion, a through-fixing screw portion having an outer cross-section with a smaller dimension than the enlarged diameter portion extends from the enlarged diameter portion;
-Each through-fixing screw is captured and held in its respective bore via the fixing member (by the fixing member);
At the same time, the fixing member
-Engaging at least partly in an inner peripheral sheet formed in the respective bore of a number of dentures to be fixed through;
-Having an outer cross section with dimensions smaller than the dimensions of the enlarged diameter section below the enlarged diameter section and around the through-fixing screw portion;

  Thus, the screw has a very simple shape, allowing the screw to be manufactured at a low cost.

  In a first particular embodiment of the present invention, an inner peripheral sheet formed in each bore and / or a through-fixing screw portion having an outer cross-section with a dimension smaller than the dimension of the enlarged diameter portion, The fact that it has a height in the axial direction that is greater than the height of the part of the fixing member that engages in can allow translation of the through-fixing screw between its retracted position and screwed position.

In a first variant of the first specific embodiment of the present invention, the following may be provided.
The fixing member is a retaining ring with a radial slit;
The inner peripheral sheet is an annular groove extending radially with respect to the axial direction of the bore;

In a second variant of the first specific embodiment of the present invention, the following may be provided.
The securing member comprises an annular ring having rotational symmetry about the central axis and extending along the central axis between the proximal and distal ends;
The fixing member comprises at least one angular portion (angular portion) that develops in an arc between a first end joined to the distal end of the annular ring and a second free end;
The at least one angular portion is elastically and permanently returned to the at least one protruding position, the first part in a transverse plane perpendicular to the central axis between the at least one protruding position and the retracted position; Partially movable from the edge of the
-In the retracted position, at least one angular part is included in the volume of the cylinder which continues the outer cylindrical surface of the annular ring;
In the protruding position, the second free end of the at least one angular portion extends beyond the volume of the cylinder which continues the outer cylindrical surface of the annular ring.

  In a second variant of the first particular embodiment of the invention, it may advantageously be provided that the inner peripheral sheet has at least one square groove portion extending radially with respect to the axial direction of the bore. This type of inner peripheral sheet is particularly useful when the space available in the radial direction within the denture to produce the inner peripheral sheet is limited in a particular radial direction.

  Alternatively, the inner peripheral sheet may be an annular groove extending radially with respect to the axial direction of the bore.

  In a second specific embodiment of the invention, the through-fixing screw is formed in the outer peripheral groove formed in the through-fixing screw at the same time via a compressible retaining ring, preferably using a radial slit. And can be advantageously provided in translation and maintained rotatably in its respective bore that engages in an inner peripheral groove formed in the respective bore.

  In this second specific embodiment of the invention, the inner peripheral groove formed in each bore and / or the outer peripheral groove formed in the through-fixing screw is engaged in the inner peripheral groove formed in each bore. Due to the fact that it has a height in the axial direction that is higher than the height of the retaining ring, it may allow translation of the through-fixing screw between its retracted position and the screwed position.

  According to another aspect of the invention, a distal connection end intended to receive a number of dentures to be fixed through and a proximal anchor intended to be inserted into the patient's maxilla or mandible A dental implant is proposed that includes a blind inner bore that extends between and to a distal connecting end and includes a first internally threaded portion that is intended to receive a threaded portion of a through-fixation screw. According to the present invention, the first inner threaded portion extends from the blind inner bore orifice in the direction of the proximal anchoring end.

  Such dental implants form a dental assembly in combination with a number of dentures that are secured through as described above.

  The first inner threaded portion extends from the blind medial bore orifice in the direction of the proximal fixation end so that the implant protrudes to a lesser extent when the implant is inserted into the patient's maxilla or mandible. As such, the overall length of the implant can be reduced. This effectively limits the risk of interference of the dentures that are fixed through with the through-fixing screws, more specifically the multiple dentures that are fixed through. In addition, the overall length of the denture penetration fixing screw can also be reduced. This is because the penetration lock screw need not have such a large length to be accepted by screwing into the dental implant, which further limits the risk of interference and damage.

  Advantageously, the dental implant may have a threaded socket with a non-circular cross section accessible from the orifice of the blind inner bore via the first inner threaded portion.

  Preferably, the dental implant is accessible from the orifice of the blind inner bore via the first inner threaded portion and the threaded socket and is smaller than the threaded diameter of the first inner threaded portion. There may be a second internal threaded portion having a cutting diameter. This second internally threaded portion, whether multiple or single, can accept screws that secure other dentures or even dental abutments. Thus, dental implants can be suitable for several uses, which limits the number of implants that a practitioner needs to have in stock.

  Other subjects, configurations and advantages of the present invention will become apparent from the following description of specific embodiments with reference to the accompanying drawings.

1 is a perspective view of a first embodiment of a number of through-fixed dentures attached and secured to a plurality of dental implants. FIG. It is a top view which shows many dentures fixed by penetration of FIG. FIG. 3 is a cross-sectional view showing a number of dentures that are fixedly penetrated in FIG. 1 on a cross-sectional plane AA illustrated in FIG. 2. FIG. 3 is a cross-sectional view showing a number of dentures that are fixedly penetrated in FIG. 1 along a cross-sectional plane BB illustrated in FIG. 2. FIG. 2 is a cross-sectional view showing a first variant of a dental implant intended to receive a number of penetration-fixed dentures of FIG. FIG. 6 is a cross-sectional view showing a number of the dentures fixedly penetrated in FIG. 1 in the cross-sectional plane AA illustrated in FIG. 2 attached and fixed to the implant of FIG. 5. FIG. 3 is a cross-sectional view showing a number of dentures fixedly penetrated in FIG. 1 along a cross-sectional plane A-A illustrated in FIG. 2 and a cross-sectional plane C-C perpendicular to the cross-sectional plane BB illustrated in FIG. It is a perspective view which shows the fixing member used in the 1st embodiment of many dentures penetrated and fixed. It is a bottom view which shows the fixing member of FIG. It is a top view which shows the fixing member of FIG. It is a side view which shows the penetration fixing screw used in the 1st embodiment of many dentures fixed by penetration. It is a bottom view which shows the penetration fixing screw of FIG. It is a perspective view which shows the fixing member used in the 2nd embodiment of many dentures fixed by penetration. It is sectional drawing which shows the 1st deformation | transformation of the 2nd embodiment of many dentures fixed by penetration. It is sectional drawing which shows the 1st deformation | transformation of the 2nd embodiment of many dentures fixed by penetration. It is sectional drawing which shows the 2nd deformation | transformation of the 2nd embodiment of many dentures fixed by penetration. It is sectional drawing which shows the 2nd deformation | transformation of the 2nd embodiment of many dentures fixed by penetration. It is sectional drawing which shows the 3rd deformation | transformation of the 2nd embodiment of many dentures fixed by penetration. It is sectional drawing which shows the 3rd deformation | transformation of the 2nd embodiment of many dentures fixed by penetration. FIG. 3 is a cross-sectional view showing a number of the dentures fixedly penetrated in FIG. 1 in the cross-sectional plane AA illustrated in FIG. 2 attached and fixed to a second deformation of the implant.

  FIGS. 1 and 2 depict a number of through-fixed dentures 1 intended to be attached and fixed to dental implants 2 and 3 using several through-fixing screws 4. The dental implants 2 and 3 are oriented obliquely with respect to each other.

  A first embodiment of the denture 1 is illustrated in FIGS. In this embodiment, a through-fixing screw 4 as illustrated in FIGS. 11 and 12 is used. This through-fixing screw 4 has a shank 5 with a threaded portion 6 intended to be received by screwing into a dental implant 2 or 3 as illustrated in more detail in FIG.

  It can be seen in FIGS. 3 and 4 that the through-fixing screw 4 is captured and held in a bore 7 formed in a number of dentures 1 to be fixed through and extending in the axial direction II. The through-fixing screw 4 is movable in rotation about an axial direction II and is axially between a retracted position (FIG. 3) and at least one screwing position (FIG. 4). It is movable in translation along II.

  In the retracted position (FIG. 3), the threading 8 of the threaded portion 6 of the penetration fixing screw 4 does not protrude from the bore 7 that holds the penetration fixing screw 4.

  In the screwed position (FIG. 4), the threading 8 of the threaded portion 6 of the through-fixing screw 4 protrudes at least partially from the respective bore 7 that captures and holds the through-fixing screw 4. This protrusion of the through-fixing screw 4 from the bore 7 allows the through-fixing screw 4 to be received within the dental implant 2 or 3 illustrated in FIG.

  The dental implant 2 or 3 is connected to the distal connecting end 9 intended to receive a number of dentures to be fixed through, and into the patient's maxilla or mandible (screwing or impacting). It extends between the proximal anchoring end 10 intended to be inserted. The dental implant 2 or 3 includes a blind inner bore 11 leading to the distal connection end 9 and includes a first inner threaded portion 12 intended to receive the threaded portion 6 of the penetration locking screw 4. The first inner threaded portion 12 extends from the orifice 11 a of the blind inner bore 11 in the direction of the proximal anchoring end 10. The dental implant 2 or 3 also has a threaded socket 13 with an undeformed (e.g. polygonal) cross section accessible from the orifice 11a of the blind inner bore 11 via a first inner threaded portion 12. The dental implant 2 or 3 also has a second internal threaded portion 14 that is accessible from the orifice 11 a of the blind inner bore 11 via a first internal threaded portion 12 and a threaded socket 13. Different from the through-fixing screw 4 illustrated in FIGS. 11 and 12 for fixation of single or multiple dentures (directly or via dental abutment) that may or may not be through-fixed The second inner threaded portion 14 has a threaded diameter that is smaller than the threaded diameter of the first inner threaded portion 12 to accept a securing screw or a through-fixing screw.

The through-fixing screw 4 has a portion 15 having an enlarged diameter portion 16, and a through-fixing screw portion 17 having an outer cross section having a size smaller than the size of the enlarged diameter portion extends from the enlarged diameter portion as shown in FIGS. Will understand. The through-fixing screw 4 is captured and held in the bore 7 via the fixing member 18, and the fixing member 18 is simultaneously
-Engage at least partly in the inner peripheral sheet 19 formed in the bore 7 of the multiple dentures 1 to be fixed through;
-Having an outer cross section with dimensions smaller than the dimension of the enlarged diameter part 16 below the enlarged diameter part 16 and around the through-fixing screw part 17;
It can be seen from FIGS.

  In order to enable the movement of the through-fixing screw 4 between the retracted position and the screwed-in position, the through-fixing screw portion 17 has a height H2 of the portion of the fixing member 18 that engages in the inner peripheral sheet 19. Has a height H1 in the large axial direction II (FIG. 4). Here, the height H <b> 1 is larger than the total length H <b> 18 of the fixing member 18.

  Alternatively or additionally, the inner peripheral sheet 19 may have a height H3 that is greater than the height H2 in the axial direction II.

  The bore 7 has a gap portion 70 that can receive at least a portion of the through-fixing screw 4 in the retracted position.

  The fixing member 18 used in FIGS. 3 and 4 is illustrated in more detail in FIGS. In these drawings, the securing member 18 has an annular ring 20 having a symmetrical rotation about the central axis II-II and extending along the central axis II-II between the proximal end 20a and the distal end 20b. Including. The fixing member 18 has two angular portions 21 and 22 (expanded in an arc between the first end 21a or 22a and the second free end 21b or 22b joined to the distal end 20b of the annular ring 20). Squared part). The angle portions 21 and 22 are elastically and permanently returned to the projecting position in their transverse plane P1 perpendicular to the central axis II-II between at least one projecting position and the retracted position. It is partially movable from the first end 21a or 22a. The retracted position is illustrated by a broken line in FIG. 10, while the protruding position is illustrated by a continuous line in FIG.

  In the retracted position, the angular portions 21 and 22 are included in the volume of the cylinder C 1 that continues the outer cylindrical surface of the annular ring 20. In the protruding position, the second free ends 21 b and 22 b of the angular portions 21 and 22 extend radially beyond the volume of the cylinder C 1 that continues the outer cylindrical surface of the annular ring 20.

  The angle portions 21 and 22 of the fixing member 18 are cross-sectional views of a plurality of dentures 1 that are penetrated and fixed on a cross-sectional plane CC perpendicular to the cross-sectional planes AA and BB illustrated in FIG. It is intended to be received within the inner peripheral sheet 19 as illustrated in FIG.

  It can be seen from FIG. 7 that the inner peripheral sheet 19 has two angular groove portions 23 and 24 extending radially with respect to the axial direction II of the bore 7. As illustrated in FIG. 4, the angular groove portions 23 and 24 receive angular portions 21 and 22, respectively, to retain the securing member 18 within the bore 7.

  Alternatively, the inner peripheral sheet 19 intended to receive the securing member 18 illustrated in FIGS. 8 to 10 may be an annular groove extending radially with respect to the axial direction II of the bore 7.

  Instead of the fixing member 18 illustrated in FIGS. 8 to 10, the through-fixing screw 4 is a retaining ring 25 that is elastically compressible using a radial slit 26 and is illustrated in FIG. 13. It can be captured and held in the bore 7 via 18.

  When a fixing member as illustrated in FIG. 13 is used, the inner peripheral sheet 19 for that part is in the form of an annular groove extending radially with respect to the axial direction II of the bore 7.

  In a second embodiment of a number of dentures 1 to be fixed through, as illustrated in FIGS. 14 to 19, the through-fixing screw 4 is routed via a compressible retaining ring 25 as illustrated in FIG. Can be rotatably mounted in the bore 7 and held in translation. In this case, the retaining ring 25 is made compressible in the radial direction by using the radial slit 26.

  14 to 19, the retaining ring 25 simultaneously engages in the outer peripheral groove 27 formed on the through-fixing screw 4 and in the inner peripheral groove 28 formed in the bore 7.

In the first variant illustrated in FIGS. 14 and 15, the translational capability of the through-fixing screw 4 moving between its retracted position and screwed position is such that the inner peripheral groove 28 formed in the bore 7 is axially I-I is permitted by the fact that it has a height H4 that is greater than the height H5 of the retaining ring 25 that engages in the inner peripheral groove 28 formed in the bore 7.

  In the variant illustrated in FIGS. 16 and 17, this translational capability of the through-fixing screw 4 that moves between its retracted and screwed positions is such that the outer peripheral groove 27 formed on the through-fixing screw 4 is axial. I-I results from the fact that it has a height H6 that is greater than the height H5 of the retaining ring 25 that engages in the inner peripheral groove 28.

  18 and 19, the translating ability of the through-fixing screw 4 that moves between its retracted position and screwed position is such that the inner peripheral groove 28 and the outer peripheral groove 27 are in the axial direction II. This is caused by the fact that each of the retaining rings 25 engaging in the inner peripheral groove 28 has a respective height H4 and H6 which is greater than the height H5.

In all of the embodiments illustrated in the drawings,
The shank 5 of the through-fixing screw 4 terminates in a distal centering part 29 which continues from the threaded part 6;
The distal centering part 29 has a cross section whose dimensions decrease in a direction away from the threaded part 6;
You will understand.

  3, 14, 16 and 18 in which the through-fixing screw 4 is in the retracted position, the through-fixing screw 4 protrudes from the bore 7, and the through-fixing screw 4 passes through all or part of its centering portion 29. Captured and held inside. The threaded portion 6 does not protrude from the bore 7 in such a way as to keep it protected.

  14-19, the centering portion 29 is substantially conical, whereas in FIGS. 3, 4 and 11, it is substantially frustoconical. Alternatively, a round shape may be used.

From FIG.
The threading 8 of the threaded part 6 of the through-fixing screw 4 has a first threaded part 61, which extends from the first threaded part 61 to the centering part 29 and continues to the second threaded part 61 62,
The first threaded portion 61 has a constant outer diameter D1,
The second threaded portion 62 has an outer diameter D2 that progressively decreases in the direction of the centering portion 29;
It will be understood specifically.

  The threading 8 of the threaded portion 6 of the through-fixing screw 4 has three threads 8a, 8b, 8c. The first inner threaded portion 12 (FIG. 5) of the implant 2 or 3 has a corresponding number of threads.

  The implant 2 or 3 of FIG. 5 whose first inner threaded portion 12 extends immediately from the orifice 11a of the inner bore 11 constitutes an independent invention that may seek patent protection. Such a dental implant 2 or 3 can have a reduced overall length, limiting the risk of interference with the penetration screw of the denture to be secured, but the first internally threaded portion 12. This is even more so because the arrangement of can reduce the length of the through-fixing screw.

  In the first variant illustrated in FIGS. 5 and 6, the dental implant 2 or 3 is a one-piece article, and its upper end 2a or 3a is intended to at least partially pass through the mucosa.

  In the second variation illustrated in FIG. 20, the dental implant 2 or 3 is composed of two parts, and is composed of a bony anchor 200 or 300 and a transmucosal extension 201 or 301. The transmucosal extension 201 or 301 has an upper end 201a or 301a that is intended to at least partially pass through the mucosa.

  The invention is not limited to the explicitly described embodiments, but rather the invention includes different variations and generalizations that fall within the scope of the appended claims.

1 Denture (dental prosthesis)
2 Dental implant
2a upper end
3 Dental implant
3a upper end
4 Transfixing screw
5 Shank
6 Threaded portion
7 bore
8 Threading
8a thread
8b thread
8c thread
9 Distal connection end
10 Proximal anchoring end
11 blind inner bore
12 first internally threaded portion
13 screwing socket
14 second internally threaded portion
15 parts (portion)
16 Radial widening
17 transfixing screw portion
18 fixing member
19 Inner peripheral seat
20 Annular ring
20a proximal end
20b distal end
21 angular portion
21a First free end
21b Second free end
22 angular portion
22a Second free end
22b Second free end
23 angular groove portion
24 angular groove portion
25 retaining ring
26 radial slit
27 outer peripheral groove
28 outer peripheral groove
29 centering portion
61 first threading portion
62 second threading portion
70 clearance portion
200 osseous anchor
201 transmucosal extension
201a upper end
300 osseous anchor
301 transmucosal extension
301a upper end
C1 cylinder
D1 external diameter
D2 external diameter
H1 height
H2 height
H3 height
H4 height
H5 height
H6 height
P1 transverse plane

Claims (16)

A number of penetration-fixed dentures intended to be attached and secured to a plurality of dental implants using several penetration locking screws,
Each through-fixation screw has a shank with a threaded portion that is intended to be received by screwing into the respective dental implant;
-Each through-fixing screw is captured and held in a respective bore formed in a number of dentures fixed through it and extending along the respective axial direction;
Each catching through-fixing screw is movable in rotation about the axial direction of the respective bore and translates along the axial direction of the respective bore between a retracted position and at least one screwed position; Is movable in
-In the retracted position, threading of the threaded portion of the through-fixing screw does not protrude from the respective bore where the through-fixing screw is captured and held;
The threading of the threaded portion of the through-fixing screw in the screwed position protrudes at least partially from the respective bore in which the through-fixing screw is captured and held; ,
A number of dentures that are fixed through. -The shank of each through-fixing screw terminates in a distal centered portion that continues from the threaded portion;
The distal centering portion has a cross section whose dimension decreases in a direction away from the threaded portion;
-In the retracted position, the through-fixing screw protrudes from the bore where the through-fixing screw is captured and held via all or part of its centralized portion,
A number of dentures to be fixed by penetration according to claim 1.   The plurality of through-fixed dentures according to claim 2, wherein the centering portion is substantially conical or frustoconical. The threading of the threaded portion of the through-fixing screw has a first threaded portion, and the threading of the threaded portion of the through-fixing screw is the first threaded portion; A second threaded portion extending from and extending to the centering portion;
The first threaded portion has a constant outer diameter;
The second threaded portion has an outer diameter that decreases in the direction of the centered portion;
A large number of dentures fixed by penetration according to claim 2.   2. A number of dentures to be fixed through, according to claim 1, characterized in that the threading of the threaded part of the through-fixing screw has at least two, preferably three, threads. The through-fixing screw has a portion with an enlarged diameter portion, and a through-fixing screw portion having an outer cross section with a size smaller than the size of the enlarged diameter portion extends from the enlarged diameter portion;
-Each through-fixing screw is captured and held in its respective bore via a fixing member;
The fixing member is simultaneously
-Engaging at least partly in an inner peripheral sheet formed in said respective bore of said multiple dentures to be fixed through;
-Having an outer cross section with a dimension smaller than the dimension of the enlarged diameter part under the enlarged diameter part and around the penetration fixing screw part;
A number of dentures to be fixed by penetration according to claim 1.   The through-fixing screw portion having an outer cross section having a size smaller than the size of the inner peripheral sheet and / or the enlarged diameter portion formed in each of the bores is between the retracted position and the screwed position. The height of the axial direction larger than the height of the said part of the said fixing member engaged in the said inner periphery sheet | seat so that translation of a penetration fixing screw is possible, The axial direction of Claim 6 characterized by the above-mentioned. A number of dentures that are fixed through. The fixing member is a retaining ring with a radial slit;
The inner peripheral sheet is an annular groove extending radially with respect to the axial direction of the bore,
The multiple dentures fixed by penetration according to claim 6. The securing member includes an annular ring having rotational symmetry about a central axis and extending along the central axis between a proximal end and a distal end;
The securing member includes at least one angular portion that develops in an arc between a first end joined to a distal end of the annular ring and a second free end;
The at least one angular portion is elastically and permanently returned to at least one protruding position, in a transverse plane perpendicular to the central axis between at least one protruding position and a retracted position; Partially movable from the first end,
-In said retracted position, said at least one angular portion is contained within a volume of a cylinder that continues the outer cylindrical surface of said annular ring;
-In the protruding position, the second free end of the at least one angular portion extends beyond the volume of the cylinder continuing the outer cylindrical surface of the annular ring;
The multiple dentures fixed by penetration according to claim 6.   The plurality of dentures to be fixedly penetrated according to claim 9, wherein the inner peripheral sheet has at least one square groove portion extending in a radial direction with respect to an axial direction of the bore.   The plurality of through-fixed dentures according to claim 9, wherein the inner peripheral sheet is an annular groove extending in a radial direction with respect to an axial direction of the bore.   The through-fixing screws are engaged via a compressible retaining ring, preferably using radial slits, at the same time into the outer peripheral grooves formed in the through-fixing screws and into the respective bores. A plurality of through-fixed prostheses according to claim 1, characterized in that they are maintained in translation and rotatably mounted in their respective bores, which engage in the inner peripheral groove formed.   The inner peripheral groove formed in each of the bores and / or the outer peripheral groove formed in the through-fixing screw may allow translation of the through-fixing screw between the retracted position and the screwed position. 13. The penetration fixing according to claim 12, characterized in that the method has a height in the axial direction that is greater than the height of the retaining ring that engages in an inner peripheral groove formed in the respective bore. Numerous dentures made. -A number of dentures to be fixed through, according to claim 1;
A dental extension extending between a distal connecting end intended to receive the multiple dentures to be fixed through and a proximal fixed end intended to be inserted into the patient's maxilla or mandible Including implants,
The dental implant includes a blind inner bore leading to the distal connecting end and includes a first inner threaded portion intended to receive a threaded portion of a through-fixing screw;
The first inner threaded portion extends from an orifice of the blind inner bore in the direction of the proximal anchoring end;
A number of dentures to be fixed by penetration according to claim 1.   15. The dental implant according to claim 14, wherein the dental implant has a threaded socket with a non-circular cross section that is accessible from the orifice of the blind inner bore through the first inner threaded portion. A number of dentures to be fixed through.   The dental implant is accessible from the orifice of the blind inner bore via the first inner threaded portion and the threaded socket, and from the threaded diameter of the first inner threaded portion 15. A plurality of through-fixed prostheses according to claim 14, characterized in that it has a second inner threaded part, which also has a smaller threading diameter.

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