WO2002015813A1 - Systeme et procede de fixation, destines a l'ancrage d'implants dentaires - Google Patents

Systeme et procede de fixation, destines a l'ancrage d'implants dentaires Download PDF

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Publication number
WO2002015813A1
WO2002015813A1 PCT/CA2001/001192 CA0101192W WO0215813A1 WO 2002015813 A1 WO2002015813 A1 WO 2002015813A1 CA 0101192 W CA0101192 W CA 0101192W WO 0215813 A1 WO0215813 A1 WO 0215813A1
Authority
WO
WIPO (PCT)
Prior art keywords
implant
dental prosthesis
cap
bore
abutment
Prior art date
Application number
PCT/CA2001/001192
Other languages
English (en)
Inventor
Michel Poirier
Original Assignee
Technique D'usinage Sinlab Inc.
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 Technique D'usinage Sinlab Inc. filed Critical Technique D'usinage Sinlab Inc.
Priority to AU2001287412A priority Critical patent/AU2001287412A1/en
Publication of WO2002015813A1 publication Critical patent/WO2002015813A1/fr

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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
    • 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

Definitions

  • the present invention relates to dental implantology processes and, more particularly, to a new system and method for securely fastening a dental implant abutment to an implant inserted in a patient's j awbone .
  • the superstructure typically consists of a number of tubular abutment feet adapted to extend down to the top of the implants and having an upper bridge structure adapted to extend inside of the dental prosthesis to support the same.
  • Biocompatible screws are typically inserted through the tubular abutment feet and screwed into the implants in order to secure the superstructure thereto.
  • Such conventional screws are each provided with a head defining a recess configured to receive, in a complementary fashion, an associated male engaging portion of a driving tool used to tighten the screws.
  • it becomes difficult to insert the male engaging portion of the tool into the tubular abutment feet because of the depth thereof and also because of the patient limited capacity to open his mouth, thereby rendering hazardous the installation of the superstructure onto the implants.
  • United States patent No. 5,733,122 issued on March 31, 1998 to Gordon discloses an attachment assembly wherein a screw having a head defining a polygonal recess extends downwardly from a bottom end of an elongated through bore of a dental prosthesis abutment for threadably engaging an implant in order to securely fasten the dental prosthesis thereto .
  • a method of securing a dental prosthesis abutment to an implant inserted into a patient's jawbone comprising the steps of: a) positioning the dental prosthesis abutment over the implant, b) inserting a threaded fastener having an elongated male head into a fastener receiving opening defined through the dental prosthesis abutment and then with a tool having a female engaging portion screwing the threaded fastener into the implant to a fully engaged position and c) cutting the elongated male head to a desired length.
  • an attachment assembly for securing a dental prosthesis to an implant inserted in a patient's jawbone, comprising a dental prosthesis abutment for receiving a dental prosthesis, a fixation member having a threaded shank portion adapted to extend through a through bore defined in said dental prosthesis abutment for threadably engaging an implant in order to securely fasten said dental prosthesis abutment to the implant, said fixation member further including an elongated head having opposed proximal and distal ends, said distal end being displaceable between a first position wherein said distal end is located outwardly of said through bore at a distance from a top surface thereof even when said fixation member has been fully tightened, thereby facilitating screwing of said fixation member, and a second position wherein a selected length of said elongated head has been cut off so that said distal end be substantially flush with said top surface of said through bore.
  • a fixation member in combination with a dental prosthesis abutment adapted to be secured to an implant inserted in a patient's jawbone for supporting a dental prosthesis, said fixation member comprising a threaded shank portion adapted to extend through a through bore defined in said dental prosthesis abutment for threadably engaging an implant in order to securely fasten said dental prosthesis abutment to the implant, and an elongated head having opposed proximal and distal ends, said distal end being displaceable between a first position wherein said distal end is located outwardly of said through bore at a distance from a top surface thereof even when said fixation member has been fully tightened, thereby facilitating screwing of said fixation member, and a second position wherein a selected length of said elongated head has been cut off so that said distal end be substantially flush with said top surface of said through bore .
  • a threaded fastener in combination with a dental prosthesis abutment adapted to be secured to an implant mounted in a patient's jawbone, said threaded fastener comprising a threaded shank portion adapted to extend through a through bore of said dental prosthesis abutment for threadably engaging the implant, and an elongated head engageable by a driving tool for allowing said threaded fastener to be screwed into the implant, said elongated head having a distal end portion of substantially uniform cross-section sized to extend outwardly of said through bore to facilitate screwing of said threaded fastener into the implant and adapted to be subsequently transversally cut at a desired location therealong after the threaded fastener has been fully tightened so that said distal end portion be recessed in the fastener receiving opening of the dental prosthesis abutment
  • Fig. 1 is a perspective exploded view of an attachment assembly used for attaching a dental prosthesis superstructure to a number of implants inserted in a patient's jawbone in accordance with a preferred embodiment of the present invention
  • Fig. 2 is a schematic perspective view of an abutment foot of a dental implant superstructure securely fastened to an implant by means of a male fixation member in accordance with a preferred embodiment of the present invention
  • Fig. 3 is a longitudinal cross-sectional view of the abutment foot illustrated in Fig. 2;
  • Fig. 4 is a perspective view of the male fixation member illustrated in Fig. 2;
  • Fig. 5 is a longitudinal cross-sectional view of a cap adapted to be fitted over an elongated head of the male fixation member
  • Fig. 6 is a longitudinal cross-sectional view of a second embodiment of a cap adapted to be fitted over an elongated head of the male fixation member .
  • FIG. 1 illustrates an attachment assembly 10 used for securely fastening a dental prosthesis abutment, such as a superstructure 12, to a number of implants 14 previously implanted into a patient's j awbone B .
  • a dental prosthesis abutment such as a superstructure 12
  • Each implant 14 has a threaded shank portion
  • Each implant 14 defines a longitudinal central bore 20.
  • a circular rim 22 is formed at a proximal end of the hexagonal portion 18 of each implant 14 for providing a uniform bearing surface for the superstructure 12.
  • the superstructure 12 generally comprises a number of cylindrical abutment feet 24 distributed along an arcuate bridge 26 adapted to extend within the lower portion of a denture structure 27 to support the same on the implants 14.
  • each abutment foot 24 defines a central through bore 28 adapted to receive a male fixation member 30 for securing the superstructure 12 to the implants 14.
  • the central through bore 28 has a bottom enlarged section 32 for accommodating the hexagonal head portion 18 of an associated implant 14 when the abutment foot 24 is seated on the top surface of the rim 22.
  • An annular shoulder 34 is defined at a junction of a reduced intermediate section 36 and an enlarged intermediate section 38 of each through bore 28.
  • each through bore 28 is provided with an enlarged top section 40.
  • the fixation members 30 used to secure the abutment feet 24 of the superstructure 12 to the implants 14 each has a uniform threaded shank portion 44 and an elongated hexagonal head 46.
  • Each fixation member 30 is adapted to be inserted into a corresponding through bore 28 with the threaded shank portion 44 of the fixation member 30 depending downwardly from the bottom enlarged section 32 of the through bore 28 for threadably engaging the longitudinally extending central bore 20 defined in the underlying implant 14.
  • the length of the elongated hexagonal head 46 of each fixation member 30 is such as to ensure that a distal end 48 thereof be at a distance from a top surface of the through bore 28 in which the fixation member 30 is placed, ' thereby facilitating the screwing of the latter into the implant 14 with a driving tool (not shown) having a hexagonal female portion adapted to receive a portion of the elongated head 46 to transmit a torque to the fixation member 30.
  • a cutting line 47 (see Fig. 4) is defined on the elongated head 46 at a location which is slightly recessed in the through bore 28.
  • the fixation member 30 is unscrewed, removed from the through bore 28 and then transversally cut along the cutting line 47. Thereafter, the fixation member 30 is screwed back into the implant 14 to a fully screwed position where the new distal end 48 of the elongated head 46 is slightly recessed in the through bore 28.
  • the elongated head 46 is of uniform , cross-section all along the length thereof and can thus be transversally cut off at any selected location between the distal and proximal ends 48 and 50 thereof so as to ensure that all the fixation members 30 be equally recessed in the abutment feet 24.
  • each through bore 28 is sized to accommodate the female hexagonal portion of the driving tool used to tighten the fixation members 30.
  • a cap 52 preferably made of Teflon or Nylon, can be fitted over the elongated hexagonal head 46 of each fixation member 30 to close the associated through bore 28 once the fixation member 30 has been properly installed therein, thereby preventing food particles or the like from entering and remaining trap in the through bore 28.
  • each cap 52 has a cylindrical outer surface 54 having a cross-section generally corresponding to the cross-section of the top enlarged section 40 of each through bore 28 and an undersurface defining a hexagonal recess 56 for receiving in a complementary fashion a portion of the elongated head 46 of an associated fixation member 30.
  • the hexagonal cross- section of the recess 56 of the cap 52 and the elongated head 46 prevent any relative rotational movement between the cap 52 and the fixation member 30 on which the cap 52 is mounted.
  • the cap 52 could be dimensioned in a lengthwise direction so as to extend beyond the top surface of the through bore 28 and to facilitate the installation thereof.
  • the portion of the cap 52 which extends outwardly of the through bore 28 could be subsequently cut so as to be flush with the top surface of the through bore 28.
  • a reference mark 58 can be defined on each cap 52 once the same has been installed on a fully inserted fixation member 30 to cooperate with a second reference mark 60 defined on the superstructure 12 at a location adjacent the top surface of each through bore 28 thereof.
  • the reference mark 58 is defined so as to be in alignment with the second reference mark 60 to provide visual indication of any eventual loosening of the fixation member 30 on which the cap 52 is installed. If the reference lines 58 and 60 become offset, the surgeon has only to remove the cap 52 and retighten the fixation member 30. Thereafter, a new cap 52 can be placed back on the fixation member 30 and a new reference line 58 be defined thereon so as to be aligned with reference line 60.
  • the cap 52' of Fig. 6 only differs from the cap 52 of Fig. 5 in that it is provided at a top end portion thereof with a continuous annular seal 62' adapted to sealingly engage the wall 64 (see Fig. 3) circumscribing the top enlarged section 40 of the through bore 28 in which the cap 52' is inserted so as to prevent food particles or the like from entering into the through bore 28.

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 procédé et un système de fixation d'un ancrage (12) d'implant dentaire (14) introduit dans la mâchoire d'un patient. Ce système comprend un élément de fixation (30) comportant une tige filetée (44) conçue pour s'introduire par filetage dans l'implant (14), afin d'assujettir l'ancrage (12) à l'implant (14). L'élément de fixation (30) est pourvu d'une tête hexagonale mâle, oblongue (46), dimensionnée pour s'étendre sur l'extérieur de l'ancrage (12), afin de faciliter le vissage de l'élément de fixation (30) et il est conçu pour être ultérieurement coupé pour avoir la longueur voulue, de façon que la tête mâle (46) soit légèrement en retrait dans l'ancrage (12), une fois vissée à fond. Un capuchon (52) sur lequel a été pratiquée une marque de référence (58) est conçu pour s'ajuster sur la tête mâle (46) de manière à fermer l'alésage récepteur (28) de fixation de l'ancrage (12) et offrir une indication visuelle d'une desserrage éventuel de l'élément de fixation (30).
PCT/CA2001/001192 2000-08-25 2001-08-21 Systeme et procede de fixation, destines a l'ancrage d'implants dentaires WO2002015813A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001287412A AU2001287412A1 (en) 2000-08-25 2001-08-21 Fastening system and method for dental implant abutment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64545100A 2000-08-25 2000-08-25
US09/645,451 2000-08-25

Publications (1)

Publication Number Publication Date
WO2002015813A1 true WO2002015813A1 (fr) 2002-02-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2001/001192 WO2002015813A1 (fr) 2000-08-25 2001-08-21 Systeme et procede de fixation, destines a l'ancrage d'implants dentaires

Country Status (2)

Country Link
AU (1) AU2001287412A1 (fr)
WO (1) WO2002015813A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004056286A1 (fr) * 2002-12-19 2004-07-08 Medevelop Ab Support de prothese, dispositif d'ancrage de prothese et procede de fabrication de support de prothese
US11045286B2 (en) 2014-04-22 2021-06-29 Noga Medical Products Ltd. Dental implants
KR20220067020A (ko) * 2020-11-17 2022-05-24 한양대학교 에리카산학협력단 치과용 임플란트 및 이의 풀림 측정 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0473262A1 (fr) * 1990-07-05 1992-03-04 Gerald M. Marlin Bague pour implant dentaire et système de support
US5302125A (en) * 1992-10-22 1994-04-12 Kownacki Charles D Dental prosthetic implant
US5527182A (en) * 1993-12-23 1996-06-18 Adt Advanced Dental Technologies, Ltd. Implant abutment systems, devices, and techniques
US5733122A (en) 1995-05-31 1998-03-31 Gordon; Basil Dental implant attachment assembly including device and method for resisting loosening of attachment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0473262A1 (fr) * 1990-07-05 1992-03-04 Gerald M. Marlin Bague pour implant dentaire et système de support
US5302125A (en) * 1992-10-22 1994-04-12 Kownacki Charles D Dental prosthetic implant
US5527182A (en) * 1993-12-23 1996-06-18 Adt Advanced Dental Technologies, Ltd. Implant abutment systems, devices, and techniques
US5733122A (en) 1995-05-31 1998-03-31 Gordon; Basil Dental implant attachment assembly including device and method for resisting loosening of attachment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004056286A1 (fr) * 2002-12-19 2004-07-08 Medevelop Ab Support de prothese, dispositif d'ancrage de prothese et procede de fabrication de support de prothese
US11045286B2 (en) 2014-04-22 2021-06-29 Noga Medical Products Ltd. Dental implants
KR20220067020A (ko) * 2020-11-17 2022-05-24 한양대학교 에리카산학협력단 치과용 임플란트 및 이의 풀림 측정 방법
KR102430329B1 (ko) * 2020-11-17 2022-08-05 한양대학교 에리카산학협력단 치과용 임플란트 및 이의 풀림 측정 방법

Also Published As

Publication number Publication date
AU2001287412A1 (en) 2002-03-04

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