WO1998001081A1 - Arrangement for an implant system - Google Patents
Arrangement for an implant system Download PDFInfo
- Publication number
- WO1998001081A1 WO1998001081A1 PCT/SE1997/001034 SE9701034W WO9801081A1 WO 1998001081 A1 WO1998001081 A1 WO 1998001081A1 SE 9701034 W SE9701034 W SE 9701034W WO 9801081 A1 WO9801081 A1 WO 9801081A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fixture
- recess
- spacer
- screw
- spacer screw
- Prior art date
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
- A61C8/0054—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
-
- 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
- A61C8/0068—Connecting devices for joining an upper structure with an implant member, e.g. spacers with an additional screw
Definitions
- the present invention relates to an arrangement for an implant system which includes a fixture (anchoring element) and a spacer screw which can be screwed securely to the latter, with associated spacer element. It also includes a unit, for example a cylinder (prosthesis structure) , which can be screwed securely to the spacer screw.
- the fixture has an internal thread which the spacer screw can be screwed into by means of a corresponding external thread.
- the fixture also has a contact plane for the spacer element, and a spanner attachment part.
- the said spacer screw is designed with a cylindrical portion located above its external thread.
- Implant systems of the type specified above are already known and are sold by Nobelpharma on the open market.
- TECHNICAL PROBLEM In implant systems of the type specified above, it is necessary to be able to combine a low structural height with the required mechanical strength of the various components of the system. Thus, it is necessary, in some cases, to provide the lowest possible structural height between the contact plane of the fixture and the top surface of the prosthesis unit (cylinder) without neglecting the mechanical strength of, for example, the prosthetic securing screw.
- the aim of the invention is to solve this problem, among others.
- Implant systems of the type in question have small dimensions and it is necessary to be able to provide good guidance functions which ensure thread engagement of each respective screw in the initial stage. It also has to be possible to facilitate the tightening function itself. This is achieved as an added effect in the present invention.
- the feature which can principally be regarded as characterizing an arrangement according to the invention is that the fixture or the anchoring element is arranged with a recess which is located in the spanner attachment part and in which the cylindrical portion of the spacer screw can be completely or partially engaged when the spacer screw is drawn tight in the fixture or the anchoring element.
- the depth of the recess and thus the degree to which the cylindrical portion can be engaged in the recess, is arranged such that it essentially corresponds to 2 - 4 thread turns of the said internal thread of the anchoring element.
- the engagement of the cylindrical portion in the recess is dependent, inter alia, on the height of the said spacer element.
- an external thread arranged on a holding screw for securing the unit in the spacer screw, has an extension function which corresponds to the engagement of the cylindrical portion in the recess of the spanner attachment part, compared to the case where there is no recess in the spanner attachment part. The extension of the said external thread ensures a desired strength function for the holding screw and the implant system as such.
- the diameter of the recess slightly exceeds the diameter of the external threads on the spacer screw, which means that the recess exercises an initial guidance function for the spacer screw as it is being screwed into the internal thread of the anchoring element.
- the spacer screw can moreover be provided with a tap at its free end for affording an important guidance function in the said recess as the spacer screw is being screwed into the fixture.
- the cylindrical portion of the spacer screw merges into an unthreaded portion which in turn merges into the said external thread of the spacer screw.
- the recess entails the absence of internal thread turns in the upper parts of the fixture.
- the said absence of thread turns means that the fixture, in the upper parts, remains essentially unloaded by impinging forces when the spacer screw is being tightened in the fixture.
- the recess in the fixture has a maximum depth which guarantees mechanical strength in the wall portion of the fixture in the said upper parts where internal thread turns in the fixture themselves form a reinforcement of the wall portion, compared to the case where there are no internal thread turns.
- the depth of the recess is chosen within a range of 0.5 - 2.0 mm, and is preferably about 1.0 mm.
- the total height of the fixture, spacer element and unit is chosen within the range of 10 - 20 mm.
- the height between the top surface of the unit and the contact plane of the fixture for the spacer element is 4 - 8 mm.
- implant systems which are suitable for different purposes and which have a high degree of adaptability to existing cortical dentine layers of different thicknesses.
- the prosthesis structure can be given a reliable anchoring function even when there is a requirement for a low structural height between the contact plane of the fixture and the position or level at which the prosthesis structure is secured.
- FIG. 1 A presently proposed embodiment of an arrangement having the characteristic features of the invention will be described hereinbelow with reference to the attached drawing, in which: the figure shows a vertical section through an implant system with fixture, spacer screw and spacer element, and a unit (cylinder) which can be screwed securely into the screw for supporting the prosthesis structure (not shown) .
- reference label 1 designates a fixture or anchoring element which is intended to be screwed securely into dentine (not shown) in a manner which is known per se.
- the anchoring element is assumed to be known per se and will therefore not be described in detail in terms of its structure and function.
- the anchoring element has an internal thread la, an external thread lb and a wall portion lc. It also has a contact plane Id and a spanner attachment part le.
- a so-called spacer screw 2 can be screwed into the element 1 via an external thread 2a which can interact with the internal thread la of the fixture 1.
- the spacer screw has, in addition to the screw part 2, a cylindrical portion 2b which merges into an unthreaded portion 2c, which in turn merges into the said external thread 2a.
- a spacer element 3 belonging to the spacer screw 2 is placed between a projecting flange 2d of the screw and the contact plane Id of the fixture 1.
- the height of the spacer element can be chosen on a case by case basis.
- the spacer element has a bearing surface 3a for a unit 4 (a gold cylinder) which is intended to support a prosthesis structure (tooth replacement, crown, etc . ) which is not shown here .
- the spacer screw has an internal thread 2e by means of which the unit can be screwed securely by means of a holding screw 5 via an external thread 5a which corresponds to the internal thread 2e .
- This securing is also known per se and will not be described in detail here, other than to say that when the screw 5 ' is tightened, the unit 4 clamps the spacer element against the fixture 1 and that the components included in the implant system are held together in this way. It will be appreciated that the length 1 of the thread 5a constitutes a critical function for the securing of the components in the implant system.
- the length 1 can be kept to an optimum by using a recess If, in which a part 2b' of the cylindrical portion 2b can be engaged.
- the recess If and the cylindrical portion 2b/2b' are cylindrical in the illustrative embodiment, and the diameter of the recess If slightly exceeds the diameter of the cylindrical portion 2b/2b' .
- the recess If has been created by boring out internal thread turns la in the upper parts . In the illustrative embodiment, 2 to 4 thread turns have been bored out. The depth of the recess is shown by 1' and corresponds essentially to the said 2 to 4 thread turns .
- the spacer screw can function for different heights of the spacer element.
- the said depth of the recess is 0.5 to 2.0 mm, preferably about 1 mm.
- the screw can be engaged further by a distance 1'' (where the spacer element has a lower height) and, in the screwing example shown here, is engaged by a distance 1' ' ' .
- a material thickness t in the spacer screw, between the recess for the thread 2e and the transition between the cylindrical portion 2b and the unthreaded part 2c of the spacer screw can be kept to a value which is acceptable from the point of view of strength, despite an appreciable length 1 of the thread 5a of the holding screw 5.
- the depth of the recess is also determined by a value ' ' > • for the upper level of the internal thread la and the level of the external thread lb. If further turns of the internal thread la were bored out, this would result in a weakening of the upper parts of the wall lc, which would cause difficulties from the point of view of strength when the spacer screw is being tightened. In the case shown here, the greatest stresses occur at a position 3 to 4 thread turns below the recess, by virtue of the unthreaded portion 2c.
- the invention affords a low structural height h between the contact plane Id of the fixture and the top surface 5b of the unit 4, which low structural height h can be reduced by the distance 1'''.
- the diameter of the recess If slightly exceeds the diameter d of the internal thread la.
- the recess can in this case serve as a guide for the spacer screw.
- a further improved guidance function can be obtained with a tap 2f at the free end of the spacer screw.
- the total height of the system is shown by H and is chosen within the range of 6 - 13 mm, and is preferably about 10 mm.
- the spacer element 3 has an internal recess 3b which corresponds to the spanner attachment le which fixes the spacer element in terms of its angle of rotation.
- the flange 2d on the spacer element can be displaced relative to the spacer element as the spacer screw is being tightened in the fixture.
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)
- Prostheses (AREA)
- Dental Prosthetics (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/194,741 US6174166B1 (en) | 1996-07-04 | 1997-06-12 | Arrangement for an implant system |
AT97930927T ATE255377T1 (en) | 1996-07-04 | 1997-06-12 | ARRANGEMENT FOR AN IMPLANT SYSTEM |
CA002258075A CA2258075C (en) | 1996-07-04 | 1997-06-12 | Arrangement for an implant system |
DE69726609T DE69726609T2 (en) | 1996-07-04 | 1997-06-12 | ARRANGEMENT FOR AN IMPLANT SYSTEM |
JP50511398A JP3987579B2 (en) | 1996-07-04 | 1997-06-12 | Equipment for implant systems |
EP97930927A EP0959802B1 (en) | 1996-07-04 | 1997-06-12 | Arrangement for an implant system |
AU34685/97A AU733690B2 (en) | 1996-07-04 | 1997-06-12 | Arrangement for an implant system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9602636-4 | 1996-07-04 | ||
SE9602636A SE506947C2 (en) | 1996-07-04 | 1996-07-04 | Device for implant systems |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998001081A1 true WO1998001081A1 (en) | 1998-01-15 |
Family
ID=20403266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1997/001034 WO1998001081A1 (en) | 1996-07-04 | 1997-06-12 | Arrangement for an implant system |
Country Status (10)
Country | Link |
---|---|
US (1) | US6174166B1 (en) |
EP (1) | EP0959802B1 (en) |
JP (1) | JP3987579B2 (en) |
AT (1) | ATE255377T1 (en) |
AU (1) | AU733690B2 (en) |
CA (1) | CA2258075C (en) |
DE (1) | DE69726609T2 (en) |
ES (1) | ES2212114T3 (en) |
SE (1) | SE506947C2 (en) |
WO (1) | WO1998001081A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8899981B2 (en) | 2005-08-30 | 2014-12-02 | Zimmer Dental, Inc. | Dental implant for a jaw with reduced bone volume and improved osseointegration features |
US9149345B2 (en) | 2007-08-30 | 2015-10-06 | Zimmer Dental, Inc. | Multiple root implant |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE9802571D0 (en) * | 1998-07-17 | 1998-07-17 | Astra Ab | Implant |
SE522958C2 (en) | 2000-12-29 | 2004-03-16 | Nobel Biocare Ab | Procedure, arrangement (device) and programs at or for prosthetic installation |
SE520765C2 (en) * | 2001-12-28 | 2003-08-19 | Nobel Biocare Ab | Device and arrangement for inserting holes for bone implants by means of template, preferably jawbones |
KR100545852B1 (en) * | 2002-10-17 | 2006-01-31 | (주) 코웰메디 | Abutment of a dental implant for a bridge |
SE526666C2 (en) * | 2002-12-30 | 2005-10-25 | Nobel Biocare Ab | Device and arrangement for fixture installation |
SE526665C2 (en) * | 2002-12-30 | 2005-10-25 | Nobel Biocare Ab | Device for dental screw-in arrangement |
US7179088B2 (en) * | 2003-03-18 | 2007-02-20 | Cagenix, Inc. | Lobed dental implant |
US20040185420A1 (en) * | 2003-03-18 | 2004-09-23 | Schulter Carl W. | Dental implant abutment |
SE526223C2 (en) * | 2003-12-10 | 2005-08-02 | Nobel Biocare Ab | System and apparatus for the manufacture and insertion of dental bridge construction |
SE527503C2 (en) * | 2004-08-05 | 2006-03-21 | Nobel Biocare Ab | Device and method for facilitating application to correct position of tooth or tooth residue template |
US8814567B2 (en) | 2005-05-26 | 2014-08-26 | Zimmer Dental, Inc. | Dental implant prosthetic device with improved osseointegration and esthetic features |
EP1928346B1 (en) * | 2005-08-30 | 2016-05-04 | Zimmer Dental, Inc. | Dental implant with improved osseointegration features |
AU2007248943B2 (en) | 2006-05-04 | 2013-05-23 | Nobel Biocare Services Ag | A device for securing a dental implant in bone tissue, a method for making a surgical template and a method of securing a dental implant in bone tissue |
AU2007343330B2 (en) * | 2007-01-10 | 2013-08-01 | Nobel Biocare Services Ag | Method and system for dental planning and production |
JP5195285B2 (en) * | 2007-11-01 | 2013-05-08 | 日立金属株式会社 | Implant keeper and assembly thereof |
EP2254068B1 (en) | 2009-05-18 | 2020-08-19 | Nobel Biocare Services AG | Method and system providing improved data matching for virtual planning |
GB2509135A (en) | 2012-12-21 | 2014-06-25 | Nobel Biocare Services Ag | An abutment with conical metal adapter |
GB2509138A (en) | 2012-12-21 | 2014-06-25 | Nobel Biocare Services Ag | Dental component with screw fixation |
GB2509136A (en) | 2012-12-21 | 2014-06-25 | Nobel Biocare Services Ag | Dental component with metal adapter |
CH707689A1 (en) * | 2013-03-08 | 2014-09-15 | Dentalpoint Ag | Zahnimplatat. |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0419431A1 (en) * | 1989-09-15 | 1991-03-27 | Nobelpharma AB | Distance member for a dental implant |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4850870C1 (en) * | 1987-10-23 | 2001-07-24 | Implant Innovations Inc | Prosthodontic restoration components |
US4850873A (en) * | 1988-04-04 | 1989-07-25 | Implant Innovations, Inc. | Prosthodontic restoration components |
US4988298A (en) * | 1989-01-23 | 1991-01-29 | Implant Innovations, Inc. | Precision abutment base |
US5040983A (en) * | 1989-01-23 | 1991-08-20 | Implant Innovations, Inc. | Temporary dental coping |
US5667382A (en) * | 1994-05-27 | 1997-09-16 | Holland; Robert S. | Vacuum pump seal-water recycling and waste disposal system for dental operatories |
AT400804B (en) * | 1994-10-10 | 1996-03-25 | Mke Metall Kunststoffwaren | IMPLANT |
US5725377A (en) * | 1996-03-29 | 1998-03-10 | Lemler; Jeffrey Richard | Dental implant apparatus |
US5951287A (en) * | 1997-04-17 | 1999-09-14 | Hawkinson; Roy T. | Dental implant failed fastener recovery systems, devices and methods |
-
1996
- 1996-07-04 SE SE9602636A patent/SE506947C2/en unknown
-
1997
- 1997-06-12 AT AT97930927T patent/ATE255377T1/en not_active IP Right Cessation
- 1997-06-12 DE DE69726609T patent/DE69726609T2/en not_active Expired - Lifetime
- 1997-06-12 US US09/194,741 patent/US6174166B1/en not_active Expired - Lifetime
- 1997-06-12 WO PCT/SE1997/001034 patent/WO1998001081A1/en active IP Right Grant
- 1997-06-12 CA CA002258075A patent/CA2258075C/en not_active Expired - Fee Related
- 1997-06-12 ES ES97930927T patent/ES2212114T3/en not_active Expired - Lifetime
- 1997-06-12 EP EP97930927A patent/EP0959802B1/en not_active Expired - Lifetime
- 1997-06-12 AU AU34685/97A patent/AU733690B2/en not_active Ceased
- 1997-06-12 JP JP50511398A patent/JP3987579B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0419431A1 (en) * | 1989-09-15 | 1991-03-27 | Nobelpharma AB | Distance member for a dental implant |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8899981B2 (en) | 2005-08-30 | 2014-12-02 | Zimmer Dental, Inc. | Dental implant for a jaw with reduced bone volume and improved osseointegration features |
US10070945B2 (en) | 2005-08-30 | 2018-09-11 | Zimmer Dental, Inc. | Dental implant for a jaw with reduced bone volume and improved osseointegration features |
US9149345B2 (en) | 2007-08-30 | 2015-10-06 | Zimmer Dental, Inc. | Multiple root implant |
Also Published As
Publication number | Publication date |
---|---|
SE506947C2 (en) | 1998-03-09 |
SE9602636L (en) | 1998-01-05 |
EP0959802A1 (en) | 1999-12-01 |
JP2000514329A (en) | 2000-10-31 |
AU3468597A (en) | 1998-02-02 |
JP3987579B2 (en) | 2007-10-10 |
CA2258075A1 (en) | 1998-01-15 |
DE69726609T2 (en) | 2004-12-30 |
ES2212114T3 (en) | 2004-07-16 |
DE69726609D1 (en) | 2004-01-15 |
CA2258075C (en) | 2007-02-20 |
SE9602636D0 (en) | 1996-07-04 |
EP0959802B1 (en) | 2003-12-03 |
AU733690B2 (en) | 2001-05-24 |
ATE255377T1 (en) | 2003-12-15 |
US6174166B1 (en) | 2001-01-16 |
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