WO1998042273A1 - Implant dentaire - Google Patents

Implant dentaire Download PDF

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Publication number
WO1998042273A1
WO1998042273A1 PCT/EP1998/001472 EP9801472W WO9842273A1 WO 1998042273 A1 WO1998042273 A1 WO 1998042273A1 EP 9801472 W EP9801472 W EP 9801472W WO 9842273 A1 WO9842273 A1 WO 9842273A1
Authority
WO
WIPO (PCT)
Prior art keywords
implant
contact body
head
implant according
bevels
Prior art date
Application number
PCT/EP1998/001472
Other languages
German (de)
English (en)
Inventor
Wolfgang Dinkelacker
Original Assignee
Wolfgang Dinkelacker
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
Priority to US09/155,862 priority Critical patent/US6164969A/en
Priority claimed from EP97104836A external-priority patent/EP0868889B1/fr
Application filed by Wolfgang Dinkelacker filed Critical Wolfgang Dinkelacker
Priority to JP54012098A priority patent/JP3307402B2/ja
Priority to PCT/EP1998/001472 priority patent/WO1998042273A1/fr
Priority to AU67299/98A priority patent/AU6729998A/en
Publication of WO1998042273A1 publication Critical patent/WO1998042273A1/fr

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
    • A61C8/0018—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
    • A61C8/0048—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
    • A61C8/0077—Connecting the upper structure to the implant, e.g. bridging bars with shape following the gingival surface or the bone surface
    • 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

Definitions

  • the invention relates to an endosseous dental implant, which has a rotationally symmetrical lower part, a head part and an axial threaded bore extending from the head part for receiving a fastening screw, which is used directly or via an intermediate member for holding a tooth crown, and which has a device for securing against Twist of the tooth crown on the head has part.
  • dental implants for a fixed denture which consist of a cylindrical or conical base body, which has on its outer diameter a shape suitable for ingrowth in the jaw, such as a roughened surface, cylindrical or conical threads, step-shaped grooves and the like.
  • the head of the implant is polished and has a central bore which is designed as a threaded hole and serves to receive a threaded bolt to which the tooth crown is attached (DE 40 28 855 C2, DE 39 17 690 C2).
  • the tooth crown is secured against rotation by means of a device connected to the fastening, such as a square or elliptical recess.
  • the tooth crown is supported on the implant in one plane. It is not intended to adapt the implant to the natural course of the bone.
  • the spacer sleeve serves as the implant head. It is closed at the bottom and screwed into the base body of the implant by means of a thread and has a central threaded hole for receiving the threaded bolt to which the tooth crown is attached.
  • a centering collar at the lower end of the spacer sleeve is provided with vertical projections which engage in corresponding recesses in the base body and serve to align the tooth crown and secure it against rotation.
  • the tooth crown is supported in one plane without adapting to the natural course of the bone.
  • the dental implant according to the invention provides for a two-sided tapering of the head part, which is formed by bevels running on both sides of the threaded bore and transverse to the row of teeth.
  • the bevels form cutting lines with the circumference of the head part, starting from the edge regions of an end face of the head, which run at a variable height and correspond to the course of the upper edge of the jawbone.
  • One connected to the tooth crown The contact body is adapted to the taper at the upper end of the implant head.
  • the double-sided taper can be asymmetrical. For this purpose there is a flatter bevel on the lingual side of the head part and a steeper bevel on the buccal side of the head part.
  • the lines of intersection of the different bevels with the circumference of the head part run on both sides at different heights in accordance with the course of the jawbone.
  • the implant according to the invention allows an improved adaptation to the anatomy of the jawbone as well as the soft tissue lying above it. Due to the shape of the implant, an adaptation to the level differences between the buccal and lingual heights and the approximal height of the course of the bone is achieved and a natural upper edge of the jaw bone is simulated. Removal of bone tissue to create a uniform basis for the abutment system can be avoided and the natural course of the bone can be largely preserved and regrow when the implant heals. On the other hand, the natural course of the bone determines the natural course of the soft tissue, so that an interimplant papilla structure is formed.
  • the shape of the implant head which is adapted to the level differences in the course of the bone, avoids circular inflammation. Osteolysis occurs at different levels, as is the case with normal teeth.
  • the arrangement also has a favorable effect on the controlled bone regeneration when using membrane technology. Cuddles through the tapered implant head the membrane follows the course of the implant head and wrinkles are avoided when the membrane is applied.
  • the surface of the contact body facing the tooth crown corresponds in its course to the head part and has corresponding bevels in a complementary form.
  • the result is a simplified assembly system with integrated protection against rotation, which has improved mechanical stability in both the buccal and lingual directions.
  • the bevels on the implant head and the corresponding bevels on the contact body absorb the lateral forces acting on the implant and prevent the occurrence of shear forces in the area of the fastening screw.
  • FIG. 1 shows an embodiment of the dental implant according to the invention in a sectional view with a cutting line running along the longitudinal axis of the dental implant;
  • FIG. 2 shows another sectional illustration of the dental implant from FIG. 1 with a course of the cutting line offset by 90 degrees;
  • FIG. 3 shows a view of the implant body 1 from the lingual side
  • FIG. 4 shows a view of the implant body 1 from the buccal side
  • FIG. 5 shows a top view of the implant head according to FIGS. 3 and 4;
  • Figure 6 shows a section along line A-A in Figure 2;
  • Figure 7 shows a section along line B-B in Figure 2;
  • Figure 8 is a view of the contact body 10 from direction C in Figure 2;
  • Figure 9 is a view of the contact body 10 from direction D in Figure 2;
  • Figure 10 is a view of a natural tooth arrangement
  • Figure 11 is a view of a conventional implant system
  • FIG. 12 shows a view of an implant system according to the invention
  • Figure 13 is a partial view of the implant head of an alternative embodiment of the invention.
  • FIG. 14 shows a plan view of a further embodiment of the implant head according to the invention.
  • FIG. 15 shows a partial section of the contact body of a further embodiment of the invention.
  • FIG. 16 shows a plan view of the arrangement in FIG. 15. Detailed description of the embodiment shown in Figures 1 to 9
  • the exemplary embodiment shown shows an endosseous tooth implant which has a cylindrical implant body 1 which consists of an implant root 2 and an implant head 3.
  • Implant head 3 and implant root 2 can be formed in one piece, as shown in the figures, or consist of two parts which are connected to one another in a suitable manner.
  • the implant root 2 is provided on its circumference with a thread 4 with which the implant is screwed into a predrilled hole in the jawbone.
  • An opening 9 at the lower end of the implant root 2 is used to improve the healing of the implant in the bone.
  • the upper edge of the jawbone runs in the region of the implant head 3.
  • the implant head 3 has a bilateral taper at its upper end, which is formed by bevels 5 and 6. With this configuration, the upper end of the implant head 3 is adapted to the shape of the jaw bone.
  • the bevels 5 and 6 are asymmetrical.
  • the bevel 5 located on the lingual side of the inserted implant runs at a flatter angle than the bevel 6 opposite it.
  • the bevel 6 thus has a more acute angle to the longitudinal axis of the implant body 1 than the bevel 5, so that arcuate cutting lines 7 and 8 also the cylindrical circumference of the head part 3 are obtained, which run at different heights on the two sides of the implant head 3 (FIGS. 3 and 4).
  • the edge of the implant facing the tooth crown is largely adapted to the different course of the edge of the jawbone on the lingual and buccal side.
  • the bevels 5, 6 form straight upper edges 11, 12 with the end face 10 of the implant head.
  • the edge regions 13 and 14 of the end face 10 lie approximately at the level of the upper edge of the jawbone between adjacent teeth and thus at a different distance from the cutting lines 7, 8 forming the lower edges of the bevels 5, 6.
  • a contact body 20 is placed on the implant head 3 and held in this position by a threaded bolt 21 which is screwed into a concentric threaded bore 19 in the implant root 2 (FIGS. 1 and 3).
  • the contact body 20 has a guide part 22, which in the exemplary embodiment is designed as a cylinder, which engages in a corresponding recess 23 in the implant head 3.
  • the underside of the contact body 20 is complementarily adapted to the asymmetrical shape of the implant head.
  • the contact body 20 has oblique surfaces 24, 25 on both sides of the guide cylinder 22, which correspond to the bevels 5 and 6 on the implant head 3 and rest positively thereon.
  • the surfaces 24, 25 also serve as a safeguard against axial rotation of the contact body 20 relative to the implant body 1.
  • the upper side of the contact body is also designed in a corresponding manner.
  • inclined upper surfaces 26, 27 are the same as the inclined lower surfaces 24, 25.
  • the outer end of the surfaces 26 terminates in a horizontal collar 28.
  • a corresponding collar 29 is also located at the outer end of the inclined surface 27.
  • the surfaces 24 and 26 delimit an inclined apron 30 (FIG. 8) and the surfaces 25 and 27 delimit an inclined apron 31 (FIG. 9).
  • the aprons 30, 31 run into the cylindrical part 33 of the contact body 20 below the edge regions 13, 14 of the end face 10.
  • the circumference of the contact body 20 increases conically upwards, the circumference 33 having a slightly concave profile.
  • the circumference of the contact body 20 increases upward in the region of the aprons 30, 31 with a slightly concave profile 34, 35 which merges into the circumference 33 of the contact body 20 without edges.
  • the contour of a tooth crown 40 adjoins the slightly concave profile 33, 34, 35 without any gaps or joints.
  • the underside of the toothed crown 40 is adapted to the shape of the contact body 20 and is fastened thereon.
  • the extension 36 can have the shape of a cylinder, as shown in the drawings, or have another suitable shape such as the shape of a pointed cone.
  • the tooth crown 40 is fastened to the contact body 20 by cementing and / or by means of a transverse screw 38 which is guided through a bore in the tooth crown and engages in a lateral threaded bore 39 in the extension 36 of the contact body 20.
  • the thickness of the aprons 30, 31 is such that they approximately correspond to the thickness of the soft tissue that forms on the jawbone. As a result, adaptation to the anatomical conditions is also achieved in the area of the soft tissue.
  • the soft tissue flow is due to the natural Determines the course of the bone, to which the implant head is adapted by the bilaterally tapered design of the head part, so that an interplantary papilla structure is also formed postoperatively.
  • FIG. 10 shows the course of the bone 41 and the course of the gums 42 and the interdental papillae 43 with a natural tooth arrangement.
  • the corresponding view of a tooth arrangement with a conventional implant system shows the loss of the interdental papillae in the areas 44 between the implant and the neighboring natural teeth.
  • FIG. 12 shows the implant system according to FIGS. 1 to 8 with interdental papillae 45 located between the implant 46 and the adjacent natural teeth 47, which are formed by the level adjustment to the natural course of the bone and soft tissue.
  • Figures 13 to 16 show alternative embodiments of the invention.
  • the asymmetrical tapering of the implant head 50 is achieved at its upper end by chamfered, convexly curved partial surfaces 51 and 52, which merge into the end face 53 of the implant head without edges.
  • the contact body (not shown) belonging to this embodiment is, as explained above, adapted to the bottom and top of the shape of the implant head 50.
  • the implant head 60 has at its upper end an end face 61 with an approximately elliptical shape, which results from a convex course of the asymmetrically beveled surfaces 62 and 62 in the radial direction.
  • the associated contact body (not shown) is adapted to the bottom and top of the shape of the implant head 60.
  • FIGS. 15 and 16 show an embodiment in which an upward extension 66 of a contact body 65 is angled in the direction of a tooth crown axis 68 at an acute angle to the axis 69 of the implant body.
  • the extension 66 is a friction body 70 which is placed on the end face 67 of the contact body 65 and is formed concentrically to the tooth crown axis 68, which is open to the axis 69 and has a bevel 71 which runs into the beveled surface 72 on the buccal side of the contact body 65.
  • the tooth crown is fastened on the contact body 65 in the direction of the axis 68. Any other forms of upward extension of the contact body are possible.

Landscapes

  • 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

L'invention concerne un implant dentaire comprenant une partie inférieure à symétrie de rotation, une tête, ainsi qu'un alésage taraudé axial partant de ladite tête, pour recevoir une vis de fixation pour maintenir une couronne dentaire. Le dit implant présente un rétrécissement bilatéral de la tête, formé par des chanfreins s'étendant de part et d'autre de l'alésage taraudé et transversalement à la rangée de dents. Les chanfreins forment des lignes de coupe partant des zones marginales d'une face de la tête, avec la périphérie de la tête, qui s'étendent à hauteur variable et s'adaptent au tracé naturel de l'arête supérieure de l'os maxillaire. Un élément de contact lié à la couronne dentaire est adapté au niveau de l'extrémité supérieure de la tête de l'implant, au rétrécissement et se présente de manière à correspondre à la couronne dentaire. Le rétrécissement bilatéral peut être asymétrique afin d'améliorer encore l'adaptation à l'anatomie de l'os maxillaire et du tissu mou qui se trouve dessus. La forme particulière de l'implant permet de parvenir à une adaptation aux différences de niveau entre les hauteurs buccales et linguales et la hauteur approximale du tracé de l'os et de reproduire une arête supérieure naturelle de l'os maxillaire.
PCT/EP1998/001472 1997-03-21 1998-03-13 Implant dentaire WO1998042273A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US09/155,862 US6164969A (en) 1997-03-21 1997-03-21 Dental implant
JP54012098A JP3307402B2 (ja) 1997-03-21 1998-03-13 歯科用植え込み台
PCT/EP1998/001472 WO1998042273A1 (fr) 1997-03-21 1998-03-13 Implant dentaire
AU67299/98A AU6729998A (en) 1998-03-13 1998-03-13 Tooth implant

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP97104836A EP0868889B1 (fr) 1997-03-21 1997-03-21 Implant dentaire
EP97104836.8 1997-03-21
PCT/EP1998/001472 WO1998042273A1 (fr) 1997-03-21 1998-03-13 Implant dentaire

Publications (1)

Publication Number Publication Date
WO1998042273A1 true WO1998042273A1 (fr) 1998-10-01

Family

ID=26070290

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/001472 WO1998042273A1 (fr) 1997-03-21 1998-03-13 Implant dentaire

Country Status (1)

Country Link
WO (1) WO1998042273A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001049199A2 (fr) * 2000-01-04 2001-07-12 Straumann Holding Ag Implant dentaire intra-osseux et ensemble combine
WO2004037110A1 (fr) * 2002-10-23 2004-05-06 Max Mettler Implant dentaire intraosseux et kit d'implant dentaire
WO2005058178A3 (fr) * 2003-12-18 2005-08-25 Franz Sutter Implant, dispositif pour fixer et/ou façonner une prothese dentaire et kit avec implant
US7708559B2 (en) 2003-05-16 2010-05-04 Nobel Biocare Services Ag Dental implant system
US7780447B2 (en) 2002-01-11 2010-08-24 Nobel Biocare Services Ag Dental implant system
EP2311403A1 (fr) * 1998-12-01 2011-04-20 Peter S. Whorle Implant intraosseux de bioracine
WO2018014897A1 (fr) * 2016-07-20 2018-01-25 Bruno Spindler Support de superstructure présentant une géométrie de pilier d'implant
US11311353B2 (en) 2016-07-20 2022-04-26 Bruno Spindler Superstructure support having special inner and outer geometry

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3917690C2 (fr) 1989-05-31 1991-06-13 Kirsch Axel
WO1995021589A1 (fr) * 1994-02-11 1995-08-17 Nobelpharma Ab Element d'ecartement pour implant dentaire
FR2720624A1 (fr) * 1994-06-03 1995-12-08 Pierre Brunet Implant dentaire et éléments auxiliaires amovibles s'y adaptant.
DE19509762A1 (de) 1995-03-17 1996-09-26 Imz Fertigung Vertrieb Enossales Einzelzahnimplantat mit Distanzhülse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3917690C2 (fr) 1989-05-31 1991-06-13 Kirsch Axel
DE4028855A1 (de) 1989-05-31 1992-03-12 Eberle Medizintech Elemente Enossales einzelzahnimplantat mit verdrehsicherung
WO1995021589A1 (fr) * 1994-02-11 1995-08-17 Nobelpharma Ab Element d'ecartement pour implant dentaire
FR2720624A1 (fr) * 1994-06-03 1995-12-08 Pierre Brunet Implant dentaire et éléments auxiliaires amovibles s'y adaptant.
DE19509762A1 (de) 1995-03-17 1996-09-26 Imz Fertigung Vertrieb Enossales Einzelzahnimplantat mit Distanzhülse

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2311403A1 (fr) * 1998-12-01 2011-04-20 Peter S. Whorle Implant intraosseux de bioracine
USRE42391E1 (en) 1998-12-01 2011-05-24 Woehrle Peter S Bioroot endosseous implant
WO2001049199A2 (fr) * 2000-01-04 2001-07-12 Straumann Holding Ag Implant dentaire intra-osseux et ensemble combine
WO2001049199A3 (fr) * 2000-01-04 2002-09-12 Straumann Holding Ag Implant dentaire intra-osseux et ensemble combine
JP2003518980A (ja) * 2000-01-04 2003-06-17 シュトラウマン・ホールディング・アクチェンゲゼルシャフト 骨内の歯科インプラントおよび組み合わせ構造体
US7780447B2 (en) 2002-01-11 2010-08-24 Nobel Biocare Services Ag Dental implant system
WO2004037110A1 (fr) * 2002-10-23 2004-05-06 Max Mettler Implant dentaire intraosseux et kit d'implant dentaire
US7708559B2 (en) 2003-05-16 2010-05-04 Nobel Biocare Services Ag Dental implant system
WO2005058178A3 (fr) * 2003-12-18 2005-08-25 Franz Sutter Implant, dispositif pour fixer et/ou façonner une prothese dentaire et kit avec implant
WO2018014897A1 (fr) * 2016-07-20 2018-01-25 Bruno Spindler Support de superstructure présentant une géométrie de pilier d'implant
US11311353B2 (en) 2016-07-20 2022-04-26 Bruno Spindler Superstructure support having special inner and outer geometry
US11564779B2 (en) 2016-07-20 2023-01-31 Bruno Spindler Superstructure support having special implant post geometry

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