EP1006926A2 - Systeme d'implant, ainsi que procede et outils pour la pose d'un implant dans une machoire sans dents - Google Patents

Systeme d'implant, ainsi que procede et outils pour la pose d'un implant dans une machoire sans dents

Info

Publication number
EP1006926A2
EP1006926A2 EP97918915A EP97918915A EP1006926A2 EP 1006926 A2 EP1006926 A2 EP 1006926A2 EP 97918915 A EP97918915 A EP 97918915A EP 97918915 A EP97918915 A EP 97918915A EP 1006926 A2 EP1006926 A2 EP 1006926A2
Authority
EP
European Patent Office
Prior art keywords
implant
primary
implant system
cone
screw
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Withdrawn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
EP97918915A
Other languages
German (de)
English (en)
Inventor
Peter Velten
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.)
VELTEN, HEINZ
Original Assignee
Velten Peter
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 Velten Peter filed Critical Velten Peter
Publication of EP1006926A2 publication Critical patent/EP1006926A2/fr
Withdrawn legal-status Critical Current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
    • A61C8/0048—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
    • A61C8/0065—Connecting devices for joining an upper structure with an implant member, e.g. spacers with expandable or compressible means
    • 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
    • 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
    • A61C8/0033—Expandable implants; Implants with extendable elements
    • 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
    • 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
    • A61C8/0054—Connecting devices for joining an upper structure with an implant member, e.g. spacers having a cylindrical implant connecting part
    • 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
    • A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection
    • 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
    • A61C8/0048—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
    • A61C8/0057—Connecting devices for joining an upper structure with an implant member, e.g. spacers with elastic means
    • 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
    • A61C8/0059—Connecting devices for joining an upper structure with an implant member, e.g. spacers with additional friction enhancing means
    • 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
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0066—Connecting devices for joining an upper structure with an implant member, e.g. spacers with positioning means

Definitions

  • the invention relates to implant systems for anchoring dental prostheses in a toothless jaw or a toothless jaw section, consisting of a primary implant for anchoring in the jaw bone and a secondary part 1 which can be connected to the primary implant and to which the dental prosthesis is connected e.g. Bridges or the like can be connected.
  • the invention also relates to a method and tools for implanting the implant systems.
  • Implant systems for anchoring dentures in the jawbone usually consist of an endosseous part that heals in the bone bed and often, not always, a second part that has no contact with the bone.
  • Titanium for example, has proven to be a suitable material for implants. It has become known to use various measures to condition the surface of the implant by means of various measures in order to require healing and growth, particularly of the P ⁇ implant, in the jawbone, ie to enable the tightest possible bond between the implant and the bone. In one case, the surfaces of lm plants made of aluminum that do not work themselves are sprayed with a liquid titanium plasma. It has also become known to sandblast and roughen the titanium surface with aluminum oxide in a grain size of 100-150 ⁇ m in order to enable better bone contact. Various coatings of the implants are also known as surface treatment.
  • a method for producing titanium implants with wire-shaped surface structures has also become known.
  • the basic body of the implant is made of titanium.
  • a dense network of titanium and Fe wires is then produced so that the Fe wires essentially take up the later open spaces of the wire-shaped surface structure.
  • This braid is then applied to the base body and welded to its surface.
  • the Fe wires are dissolved by an oxidizing acid to which titanium is resistant (European patent application 262 354 AI).
  • This treatment is intended to encourage the ingrowth of the bone tissue into the open spaces of the surface structure, so that there is close bone contact of the implant.
  • implants which consist of a primary implant into which a secondary part can be screwed, areas of the primary implant being spread outwards by screwing in the secondary part in order to increase the anchoring in the bone.
  • a dental root implant with a positive bioreactive ceramic coating and an internal thread for attaching a superstructure has become known.
  • the implant consists of a metal core which has an expansion cone at its front end and an internal thread in the region of the cylindrical section.
  • a sleeve which is partially slotted from its front end is slipped over the metal core and is drivable through the slot on the expansion cone of the metal core.
  • longitudinal ribs engaging in the slots of the sleeve are arranged, the height of the wall thickness and the width of which can be adapted to the slots of the sleeve which are widened after the anchoring toward the front side of the expansion cone.
  • the disadvantage is that the implant neck is exposed, so that germs have access to the implant body or to the bone via the part of the implant facing the oral cavity. This promotes the undesired formation of gaps and can lead to the loss of the implant through infection of the gaps.
  • Another disadvantage is the shape of the implant.
  • An implantable fastening means for dental prostheses with one intended for healing in the bone tissue has also become known according to the apical conical tapering fastening pin, the apical end of which can be inserted into the jaw has an external thread, the fastening pin is tubular and the apical end of the fastening pin has longitudinal slots in the area of the external thread, in particular in the direction of the generatrix of the conical, apical end ( EP-PS 0207211).
  • the implant should be filled with a plastic, tissue-friendly mass, which should also support the tooth crown.
  • This implantable fastener is intended to facilitate the insertion of a dental implant and to improve healing while at the same time producing the required elasticity.
  • a coated cylinder implant with an integrated fixation system as a carrier of various intraoral structures has also become known.
  • the implant consists of a hollow cylinder with longitudinal slits at the top and bottom with an inner shoulder tapering at the top and bottom.
  • the screwed-in screw expands the hollow cylinder at the top and bottom through an outer cone and conical tips on the screw. This is intended to fix the implant inserted into the bone hole. (DE 4000112 AI).
  • Slits especially in the implant neck area, mean cavities into which the mucous membrane grows and bacteria penetrate. The consequence of this is a progressive connective tissue change with the resulting risk of infection and implant loss. Slots in the implant tip area indicate sharp edges and pressure peaks in the edge area under load. This causes bone loss over time, which increases the mobility of the implant in the bone.
  • the invention is based on the object of improving implant systems from a primary implant and a secondary part which can be connected to it in such a way that they offer the least possible attack for bacteria and also enable seamless healing and permanent and firm growth in the jawbone .
  • Another task then is to develop an implantation method and tools for carrying out this method.
  • the secondary part is designed as a secondary implant that can be impregnated into the jawbone with an outer diameter that is equal to or in sections larger than the outer diameter of the surface of the pneumatic implant facing the secondary implant, that the secondary implant is close to the implant in the implanted state Primary implant and on the Kompakta, and that the end of the secondary mouth pointing towards the oral cavity is designed as a coupling point for a turning tool and, on the other hand, in that after predrilling an entry point in the toothless jaw or a toothless jaw section with a pilot drill to a depth that the long and the combined P ⁇ mar- Sekundanmplan- tate corresponds, with a dressing tool prepared the final implant bed for the primary graft, and thereafter the primary ⁇ implant in this recycled bed is implanted, whereupon with a Aufrungstechnikz The bed was prepared for the secondary implant and then the secondary implant was connected to the primary implant in the jaw, whereupon the tertiary part was connected
  • both implants have the shape of circular cylinders with the same outside diameter.
  • the primary implant has the shape of a circular cylinder
  • the secondary implant on the other hand, has a shape in the manner of a rotational paraboloid.
  • the outer jacket of the primary implant merges into the outer jacket of the secondary implant without a shoulder.
  • the primary implant has the shape of a cone and the secondary implant has the shape of a truncated cone.
  • At least one intermediate implant can also be arranged between the two implants in order, if necessary, to bring about a length adjustment to the prepared implant bed.
  • a three-part implant with two endosseous implant parts ie with a primary implant that can be anchored in the bone and a secondary implant, has been created.
  • the Sekundanmplantat is congruent to but slightly k le i e - re secondary bore trained so that in addition to a good anchoring of the primary implant in the jaw, a safe healing of the secondary implant in the jaw is possible, as well as a reliably tight seal to the oral cavity.
  • the fixed healing of the primary implant into the jawbone is supported by the spreadable areas in the primary ⁇ implant, which also guarantee an optimal primary stability.
  • the expansion slots are sealed against the oral cavity by the secondary nipi antat. They will grow through the bone over time, which also contributes to the rotational stability of the implant.
  • the twisting especially of the primary implant can also be increased to claim 26 characterized in accordance with that additional longitudinal beads are provided on the absp Gill ⁇ cash areas.
  • the implants consist of titanium or niobium or common alloys of these metals or of other tissue-friendly materials.
  • the surfaces can also be roughened in a manner known per se, for example by blowing with aluminum dioxide, in order to promote the ingrowth of the jawbone. The surface roughness should be 100 to 150 ⁇ m.
  • Another advantage of the implant systems according to the invention can be seen in the fact that the primary implant can be loaded immediately after being embedded in the jaw.
  • the implant systems e according to the invention offer only a very slight possibility of attack for bacteria. It follows that the implant systems form a tight bond with the jawbone from the start. There are no gaps that allow bacteria to penetrate the mucous membrane. All of these advantages result from the clever outer shape of the implant systems with a smooth surface and a rounded end.
  • the form according to the invention of the expansion of the areas provided for this purpose in the primary implant by means of a corresponding expansion cone step in the screw-in secondary implant leads to a maximum stability of theparam.
  • the fact that it is possible according to the invention to make an absolutely circular compact bore for the secondary implant in the jaw results in a tight connection of the secondary implant with the jaw, thereby preventing the attack surface for bacteria, but also for ingrowth of the mucous membrane.
  • the implant system according to the invention also allows salting in anatomically difficult conditions of the jaw.
  • the secondary implant can be implanted vertically in the jaw even if the primary implant only has to be inserted obliquely into the jaw. In both cases, spreadable areas can be provided in the load-neutral area of the implant systems.
  • the implant bed is prepared for both implants after predrilling with a predrill by a further drill. Given ⁇ if light hammer hitting - - then the primary implant is first transferred into the prepared bed is ⁇ . The long beads on the outer skin of the primary implant ensure good torsional stability.
  • the secondary implant is then connected to the primary implant, implant whereby a tight seal between the P ⁇ mar- and the secondary ⁇ , but also takes place between the secondary implant and the cortical bone.
  • the secondary implant is designed as a truncated cone or in the manner of a paraboloid of revolution.
  • a Special tools to prepare the secondary implant bed For implant systems of this type, the bed is first prepared in accordance with the shape using a tool for preparing the implant bed for the primary implant, after pre-drilling through a pre-drill. The primary implant is then inserted, which immediately has a secure seat in the cancellous bone.
  • the secondary implant bed is prepared, the tool having a guide pin which is guided by a corresponding guide section in the primary implant. This makes it possible to prepare the secondary implant bed with an absolutely circular cross section.
  • the implant system consisting of the endosseous primary implant and the secondary implant is firmly implanted in the jaw.
  • the tools for preparing the implant beds are characterized in claims 36 to 50.
  • FIG. 1 schematically shows a first implant system
  • La is a plan view of the secondary rim implant along the line la, la in Fig. 1,
  • 1b shows a plan view of the primary implant along the line 1b, 1b in FIG. 1,
  • FIG. 3 shows schematically in section a third implant system
  • FIG. 4 is a view of a preferred embodiment of an implant system
  • Fig. 5 shows the preferred implant system according to Fig. 4 in
  • FIG. 6 shows an angled implant system in partial section
  • 7 shows a representation of successive stages of the anti-intrusion process
  • Fig. 9 a preparation tool for a primary implant bed
  • Fig. 10 is a preparation tool for a secondary implant bed
  • Fig. 1 1 shows a section through the tool according to FIG. 10 along the line XI / XI.
  • Fig. 3 the oral cavity 1, the mucous membrane 2, the compact 3 and the cancellous bone 4 are indicated schematically. These suggestions apply to all implant systems of the present invention.
  • a first implant system 5 is shown schematically in FIG. 1, the circular-cylindrical primary implant 6 and the circular-cylindrical secondary implant 8 being shown in the non-assembled state.
  • the primary implant has a spherically curved end 7. Both implants have the same outer diameter 9. They therefore merge into one another without a shoulder in the assembled state.
  • a bayonet connection is used for the assembly, one part 10 of which is arranged on the circular-cylindrical secondary implant 8, and the other part 11 of which is incorporated into the upper region of the primary implant 6.
  • the secondary rim implant 8 ends towards the oral cavity 1 in an implant neck 12 for ingrowth of the mucous membrane 2.
  • the implant neck 12 is followed by an edge bevel 13, the meaning of which will be explained later.
  • an internal thread 14 is provided, into which a screw for fastening a tertiary part for attaching the denture can be screwed.
  • a hexagon socket 15 is provided which can be used in which a tool for rotating the secondary implant.
  • Long beads 16 are provided on the outer jacket of the primary implant 6, which, in the implanted state, ensure that the primary implant is prevented from rotating in the jaw.
  • Fig. La shows a plan view of the side facing away from the oral cavity 1 part of the secondary implant 8 with the attached hawks of Ba ⁇ jonettitati 10.
  • Fig. Lb shows a top view of the pointing toward the oral cavity 1 area of the primary implant 6 with the attached there ßajonett- Connection part 11.
  • Fig. 2 shows a second embodiment of the invention.
  • the implant system 18 has a circular-cylindrical primary implant 19 with a spherically curved end 7 and an outer diameter 20.
  • the primary implant 19 there is an internal thread 21 for a screw attachment 24 on the secondary rim implant 23, which is designed like a paraboloid of revolution.
  • At least one intermediate implant 22 can be provided between the primary implant 19 and the secondary implant 23, which may make it possible to adapt the length of an implant system to the prepared implant bed. Intermediate implants can be used on all implant systems.
  • An internal thread 25 is arranged in the secondary implant 23, into which a screw for fastening a tertiary part, not shown, can be screwed.
  • the Sekundärtei 1 23 has a smaller, facing away from the oral cavity 1 ⁇ outer diameter 26 and a larger outer diameter 26a, the implant neck 12 adjoined by the edge bevel. 13
  • the pointing toward the mouth end of the Sekundari 1 pl ant decisive 23 on a screw head 27 to which a tool for screwing the implant 23 into the secondary primary ⁇ implant can be attached 19th 3 shows an implant system 29 with a conical primary implant 30 and a truncated conical secondary implant 34.
  • the implant system 29 is shown in section in order to explain the internal structure.
  • the conical primary implant 30 ends in a spherically curved end 7.
  • the wall inclinations of the primary implant 30 and the secondary implant 34 can be the same. Both parts of the implant merge into one another in the assembled state without attachment.
  • the wall inclination of the Seundar implant can also be greater than that of the primary implant.
  • the primary implant there is a frustoconical fitting insert 31 into which a frustoconical fitting shoulder 35 on the secondary implant 34 fits.
  • the primary implant has a larger diameter 32, which corresponds to the smallest outer diameter 36 of the secondary implant.
  • the secondary implant 34 Towards the oral cavity 1, the secondary implant 34 has a larger outer diameter 36a, to which the implant neck 12 with the bevel 13 can be connected.
  • the fitting insert 31 and the fitting projection 35 can also be designed in the shape of a circular cylinder.
  • a longitudinal bore 37 with an internal thread 33 is provided in the primary implant 30, into which a screw thread 39 of a screw 38 can be screwed, which holds the secondary and primary implant together.
  • the screw 38 has a screw head 40 which lies against the bottom of a blind hole in the secondary implant.
  • the blind hole is provided with an internal thread 41 into which a screw for fastening a tertiary part to the secondary implant can be screwed.
  • the implant system 43 shows the side view of a preferred implant system 43.
  • the oral cavity 1, the mucous membrane 2, the Ko pakta 3 and the cancellous bone 4 are indicated schematically.
  • the implant system, generally designated 43, with a longitudinal axis 44 is composed of a primary implant 45, a secondary implant 65 and one Tertiary part 85 together, of which the primary implant 45 with the cancellous bone 4 and the secondary implant 65 with the compact 3 have grown together.
  • the tertiary part 85 protrudes into the oral cavity 1.
  • the secondary implant 65 can also be partially overgrown with the cancellous bone.
  • the primary implant 45 consists of an end cone 53 with a spherical cone end 54.
  • the imaginary base area is designated 55.
  • the wall inclinations 63 of the end cone 53 and of a first truncated cone 57. Into which the end cone 53 merges via a rounded first retentions 56 depend on the different sizes of the implant systems 43.
  • the imaginary larger base area of the first truncated cone 57 is designated 58 .
  • the wall inclination 63 of the second truncated cone 61 also depends on the size of the implant system. Usual wall inclinations 63 can be between 6 and 10 °.
  • the surface 64 of the primary implant 45 is smooth or treated in a manner known per se, for example roughened.
  • the truncated cones 57 and 61 can form expandable side regions 46 which are separated from one another by expansion slots 47 and which end in a relief bore 50 in addition to the base surface 55 of the end cone 53.
  • the number of spreadable side areas 46 is arbitrary. In preferred exemplary embodiments, the primary implant 45 has three spreadable side areas 46.
  • a secondary implant 65 is screwed together with the primary implant.
  • Fig. Shows that the secondary implant 65 consists, inter alia, of an ingrowth area 72 ⁇ of an imaginary larger base area 73.
  • the wall inclination 63 of the ingrowth area 72 can be 6 ° to 7 °.
  • the implant neck 12 adjoins the base surface 7 of the lip waxing area 72 and ends at the mouth 1 along its circumference with a bevel 13.
  • the implant neck 12 is designed as an annular groove rounded toward the longitudinal axis 4, the surface of which can be smooth or post-treated in a manner known per se.
  • the mucous membrane 2 can grow into the implant neck 12 when the implant system 43 is embedded or waxed in the jaw 3, 4.
  • the edge of the implant neck 12 pointing towards the oral cavity 1, when the primary implant 45 is correctly implanted in the cancellous bone 4 and the secondary implant 65 screwed to the primary implant 45 in the compact 3, is flush with the surface of the mucous membrane 2.
  • the upper area of the secondary implant 65 closes off as a screw head 78, which in preferred exemplary embodiments is designed as a hexagonal screw head and with the aid of which the secondary implant 65 is screwed into the primary implant 45.
  • the tertiary part 85 of the three-part implant system 43 is seated on the secondary implant 65.
  • the lower edge region of the tertiary part 85 pointing towards the secondary implant 65 is designed as a bevelled inner edge 86 which fits onto the beveled edge 13 of the secondary implant 65.
  • the tertiary part 85 is penetrated by a channel 87 which is designed as an inner cone 88.
  • Dental replacement parts which are not shown, can be attached to the tertiary part 85 in a manner known per se.
  • FIG. 5 shows the previously described exemplary embodiment of the invention on the left as a view and on the right as a longitudinal section.
  • the positions used in FIG. 5 correspond to those which have been illustrated in FIG. 4 and explained in connection with it.
  • An internal thread 52 is provided in the end cone 53 of the primary implant 45, into which a screw attachment 66 can be screwed at the end of the secondary implant 65 pointing towards the end cone 53; adjoining the screw shoulder 66 is a truncated cone 69 formed as a connecting piece with an imaginary larger base area 70.
  • the wall slope 71 of the expansion truncated cone 69 is 3 ° to 6 °.
  • the side portions 46 form a suitssab ⁇ section 48 for a not shown on ereitungswerkmaschine 120 to the after the implantation of the primary implant 45, an exact compact secondary bore 67 is drilled, into which the waxing area 72 of the secondary implant 65 fits when the secondary implant 65 is screwed into the primary implant 45.
  • the compact secondary bore 67 and the ingrowth area 72 are matched to one another in such a way that the secondary implant 65 fits tightly into the bore 67.
  • Fig. 4 shows that the primary implant 45 in the cancellous bone
  • an internal thread 75 is provided for a screw 89 with which the tert 85 part is screwed to the secondary rim 65.
  • the head portion 90 of the screw 89 is formed as a cone 91, of the tertiary part 85 is firmly connected with the secondary part 65 ver ⁇ in the screwed-in state by means of the inner cone 88 in the channel 87, wherein the bevelled inner edge 86 abuts against the edge bevel. 13
  • the head region 90 of the screw 89 can be equipped with a cross recess 92 or an internal hexagon 93.
  • FIG. 6 shows an angled implant system 43a as a modified exemplary embodiment of the invention.
  • Essential individual parts correspond to those of the implant system 43 and are labeled with the same positions. If a clear allocation between the positions of Figs. 6 and those of FIGS. 4 and 5 is possible, this Po ⁇ sitions will not be explained again.
  • FIG. 6 have the tertiary part 85 and the screw 89 a center ⁇ line 68 and the primary graft 45 and the secondary rimplantat 65a a center line 79 which may form depending on the anatomical conditions in the jaw, an inclination angle 82 with each other, between 180 ° - as in the implant system 43 according to FIGS. 4 and
  • the ingrowth area 72a has a correspondingly designed larger base area 73, to which the implant neck 12 connects. In the waxing area 72a there is an internal thread 80 for the screw 89.
  • the surface 83 is smooth or post-treated in accordance with the surface 64 of the primary implant 45.
  • opposing marking grooves 94 can be provided in the primary implant 45 and 95 in the secondary implant 65, 65a in the desired position. Expansion markers 47 can also be used as marking aids.
  • the oral cavity 1, the mucous membrane 2, the compact 3 and the cancellous bone 4 are again indicated.
  • a pre-drilling is made in the toothless jaw at the desired location with the aid of a pre-drill 97.
  • the pre-drill 97 consists of a shaft 98 for clamping in the drill chuck of a drill and a drill body 99 which ends in a tip 102.
  • the preparation tool 106 also consists of a shaft 107 for clamping in the drill chuck of a drilling machine and a processing section 109, which ends in an arcuate tip 117 according to FIG. 7b.
  • Fig. 7c shows that the primary graft 45 with the spherical formation from ⁇ is embedded in the implant bed 54th
  • the areas 46 not yet spread apart in this state form a guide part 48 (FIG. 5) for a guide pin 130 on a preparation tool 120 designed as a truncated cone for the secondary implant bore.
  • a guide part 48 FIG. 5
  • the expansion cone 69a manages to spread out the expandable side regions 46 so that the primary implant 45 assumes the shape shown in FIG. 7f, in which a smooth transition from the primary implant 45 to the secondary implant 65 is possible .
  • a twisting tool engages the screw head 78.
  • FIG. 8 shows the pilot drill 97 in an enlarged view.
  • a shaft 98 for clamping in the drill chuck of a drilling machine is adjoined by a drilling body 99 which is equipped with working strips 100 which, according to FIG.
  • the work strips 100 have an essentially rectangular cross section.
  • the entire pre-drill 97 is penetrated by a channel 103, through which coolant reaches an outlet opening 104, which exits between the cutting edges 100 at the tip 102 of the drill body 99.
  • the drill body 99 ends flat and the cutting edge 100 merges into the tip 102.
  • the drilling body 99 is provided with a depth marking 105, by means of which it is possible to determine the drilling depth.
  • FIG. 8b shows a view of the pilot drill 97 from the tip.
  • the cutting edges 100 that emerge from the drill body 99 at an angular distance 101 can be clearly seen.
  • FIG. 9 shows a preparation tool 106 for the primary implant 45. 9a three-edged, acc. Fig. 9b but also be four-edged.
  • a preparation section 109 adjoins a shaft 107. Coaxial to the longitudinal axis 110, the tool is penetrated by a channel 114 for the passage of coolant. Wings 111 are attached to the preparation section and have cutting edges 112 at their outer ends. Troughs 113 are arranged between the wings 111. The angular distance 116 between the cutting ⁇ edge is 120 ° or 90 °. The channel 114 ends in a cooling water outlet 115, from which the wings 111 are brought together in arches 117 to the tip.
  • the tool 106 also has a depth marking 118, with the aid of which the surgeon can recognize the depth of penetration of the tool into the pilot hole.
  • Figs. 10 and 11 show a dresser 120 for the seconding ⁇ därimplantatbohrung 67.
  • a shaft 121 is coaxial with the longitudinal axis
  • a preparation section 123 designed as a truncated cone, which has a large base area 124 and a smaller base area 125.
  • the angle 129 which the cutting edge to the longitudinal axis 122 ⁇ occupy is usually 70 to 75 °. Depending on the application, other angles can also be preferred.
  • the tool 120 is also penetrated by a channel 132, which ends in outlet openings 133 within the cutting edges 127.
  • Oral cavity mucous membrane Compact cancellous bone Implant system Circular cylindrical primary implant Spherical curved end Circular cylindrical secondary implant Outside diameter Bayonet lock Bayonet lock Implant neck Edge bevel Internal thread Hexagon socket, longitudinal bead
  • Implant system circular cylindrical primary implant outer diameter inner thread intermediate piece 3 rotat i onsparabol i dart i ges Secondary mpl antat 4 screw attachment 5 internal threads 6 smallest external diameter a largest external diameter 7 screw head 8 9 implant system 0 conical primary implant 1 fitting insert 2 largest external diameter primary implant 3 internal thread 4 conical truncated secondary implant 5 conical truncated 6 small fitting fitting a largest outside diameter 7 longitudinal bore 8 screw 9 screw thread 0 screw head 1 internal thread 2 3 impl antatsystem a angled implant system 4 longitudinal axis 5 primary implant 6 expandable side area 7 expansion slot 8 guide section for preparation tool 9 0 relief bore 1 2 internal thread 3 end cone 4 cone end 5 base 6 first leeleisirisri 7 first truncated cone 90 head area 8 base 91 cone 9 second retention groove 92 cross recess 0 93 hexagon socket 1 second truncated cone 94 marking groove (primary implant) 2 base 95 marking groove (secondary implant) 3 wall inclination 96 4 surface 97 pilot drill

Abstract

L'invention concerne un système d'implant (43) utilisé pour l'ancrage d'une prothèse dentaire dans une mâchoire (3, 4) sans dents, ou dans une partie de mâchoire sans dents, constituée d'un implant primaire (45) dont les parties latérales (46) peuvent s'écarter, pour l'ancrage dans le maxillaire (4), et d'une pièce secondaire (65) se vissant dans l'implant primaire (45), qui est en liaison active avec la prothèse dentaire et qui fait écarter les parties latérales (46) de l'implant primaire (45). Ce système d'implant (43) est conçu de sorte que la pièce secondaire se présente sous la forme d'un implant secondaire (65, 65a) à insérer dans le maxillaire, qui, d'une part, ferme de façon hermétique, vis-à-vis de la cavité buccale (1), l'implant primaire (45) avec ses parties latérales (46) pouvant s'écarter, dans le maxillaire (3, 4), et, auquel, d'autre part, une troisième pièce (85) peut être raccordée, du côté de la cavité buccale (1), pour permettre la fixation d'une prothèse dentaire. L'invention concerne également un procédé de pose d'implant ainsi que des outils utilisés pour préparer l'emplacement de pose de l'implant. Lesdites parties latérales (46) pouvant s'écarter ne sont nécessaires que lorsque le système d'implant est soumis immédiatement à une charge. Ces parties latérales, ainsi que l'implant secondaire, grâce à sa forme, ne sont pas soumis à une croissance interne sans sollicitations du système d'implant.
EP97918915A 1996-09-03 1997-08-27 Systeme d'implant, ainsi que procede et outils pour la pose d'un implant dans une machoire sans dents Withdrawn EP1006926A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1996135619 DE19635619A1 (de) 1996-09-03 1996-09-03 Implantatsysteme sowie Verfahren und Werkzeuge zum Implantieren im zahnlosen Kiefer
DE19635619 1996-09-03
PCT/DE1997/001884 WO1998009581A2 (fr) 1996-09-03 1997-08-27 Systeme d'implant, ainsi que procede et outils pour la pose d'un implant dans une machoire sans dents

Publications (1)

Publication Number Publication Date
EP1006926A2 true EP1006926A2 (fr) 2000-06-14

Family

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Family Applications (1)

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EP97918915A Withdrawn EP1006926A2 (fr) 1996-09-03 1997-08-27 Systeme d'implant, ainsi que procede et outils pour la pose d'un implant dans une machoire sans dents

Country Status (4)

Country Link
EP (1) EP1006926A2 (fr)
AU (1) AU4294597A (fr)
DE (1) DE19635619A1 (fr)
WO (1) WO1998009581A2 (fr)

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DE20115184U1 (de) * 2001-09-14 2001-11-15 Busch & Co Kg Rotierendes dental-chirurgisches Instrument mit Kühlmittelkanal
DE10238091A1 (de) * 2002-07-26 2004-02-05 Star-Group-International Implant Development & Technology Gmbh Dentalimplantat mit Verankerungskopf und Schraubkörper
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FR2922752B1 (fr) * 2007-10-31 2010-11-19 Tekka Implant dentaire a connecteur tronconique male.
IT1404743B1 (it) * 2011-02-10 2013-11-29 Rondini Dispositivo per creare nella cresta ossea della gengiva la sede di fissaggio della protesi
EP3169267B1 (fr) * 2014-07-17 2018-12-19 Southern Implants (Pty) Ltd. Implant de retenue de prothèse dentaire
US11471172B1 (en) * 2018-12-06 2022-10-18 Gary Bram Osteotomy drill bit to produce an optimally shaped jawbone opening for a dental implant and abutment
EP3799825A1 (fr) * 2019-10-02 2021-04-07 Ruetschi Technology AG Implant dentaire non fileté, système comprenant un implant dentaire non fileté et procédé de fixation d'un implant dentaire non fileté

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Also Published As

Publication number Publication date
DE19635619A1 (de) 1998-03-05
WO1998009581A3 (fr) 1998-07-23
AU4294597A (en) 1998-03-26
WO1998009581A2 (fr) 1998-03-12

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