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WO2011071228A1 - Ensemble implant dentaire - Google Patents

Ensemble implant dentaire Download PDF

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Publication number
WO2011071228A1
WO2011071228A1 PCT/KR2010/004895 KR2010004895W WO2011071228A1 WO 2011071228 A1 WO2011071228 A1 WO 2011071228A1 KR 2010004895 W KR2010004895 W KR 2010004895W WO 2011071228 A1 WO2011071228 A1 WO 2011071228A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixture
abutment
contact
implant assembly
slope surface
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.)
Ceased
Application number
PCT/KR2010/004895
Other languages
English (en)
Inventor
Ho Seong Kang
Byung Kook Kim
Tae Gwan Eom
Mu Yong Park
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.)
Osstem Implant Co Ltd
Original Assignee
Osstem Implant Co Ltd
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 Osstem Implant Co Ltd filed Critical Osstem Implant Co Ltd
Publication of WO2011071228A1 publication Critical patent/WO2011071228A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61C8/0018—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
    • A61C8/0037—Details of 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
    • A61C8/0022—Self-screwing
    • 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
    • A61C8/0048—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
    • A61C8/0074—Connecting devices for joining an upper structure with an implant member, e.g. spacers with external threads

Definitions

  • the present invention relates to a dental implant assembly used for recovering a lost tooth of a patient, and more particularly, to a dental implant assembly in which a contact area of threads contacted with each other for coupling an abutment with a fixture is relatively increased so as to enhance a coupling and fixing degree between the abutment and the fixture.
  • An implant is a substitute for recovering lost tissues of a human body.
  • an implant is generally used as a substitute in which a fixture is implanted in and adhered to an alveolar bone from which a tooth root of a natural tooth is taken out such that the fixture may replace a tooth root of a lost tooth, and then an artificial tooth is fixed to the fixture such that the original function of the lost tooth may be recovered.
  • Such a dental implant may be classified in various ways in accordance with their coupling methods between the artificial tooth and the tooth root thereof.
  • a screw-type implant using a coupling power of a screw there is a screw-type implant using a coupling power of a screw
  • the conventional screw-type implant system (or screw-type implant assembly) includes a fixture, an abutment and a dental prosthesis.
  • the fixture is implanted in the alveolar bone and plays a role of fixing the entire implant system.
  • the fixture is made of titanium or the like, which is excellent in biocompatibility, for satisfying its compatibility with osseous tissues of a human body.
  • the abutment is coupled to the fixture and plays a role of fixing and supporting a dental prosthesis.
  • the dental prosthesis is made to be shaped as a tooth through several processes such as impression acquisition, work model preparation, waxing, investing and annealing.
  • Surgical procedure for the implant system configured as above generally includes: a fixture implanting step for implanting a fixture serving as an implant understructure, an impression acquisition and work model preparation step, a waxing and inner crown casting step, a prosthesis molding step for molding a prosthesis, and a prosthesis adhering step for coupling the prosthesis with an outer crown by means of a cement.
  • the conventional implant assembly includes a fixture 1 implanted in the alveolar bone, an abutment 5 coupled to the fixture 1, and a dental prosthesis (not shown) fixed to the fixture 1 by means of the abutment 5.
  • the abutment 5 and the fixture 1 are coupled with each other by means of thread-engagement between a female screw 2 formed on an inner circumference of the fixture 1 and a male screw 6 formed on a lower outer circumference of the abutment 5.
  • a fixing force namely a rotational torque for coupling, between the fixture 1 and the abutment 5 may be obtained from a frictional force at a contact surface between the fixture 1 and the abutment 5.
  • the contact surface between the fixture 1 and the abutment 5 includes a slope contact surface where an upper inner circumferential slope surface 3 of the fixture 1 is in contact with an outer circumferential slope surface 7 of the abutment 5, and a thread contact surface where the female screw 2 of the fixture 1 is in contact with the male screw 6 of the abutment 5.
  • the fixture 1 is in contact with the abutment 5 at two contact surfaces, namely the slope contact surface and the thread contact surface.
  • the contact area of the slope contact surface is larger than that of the thread contact surface, so a frictional force used for coupling the fixture with the abutment is mainly generated from the slope contact surface.
  • the contact area of the thread contact surface is larger than that of the slope contact surface to enhance the coupling and fixing degree, there is needed an effort to relatively increase the contact area of the thread contact surface for enhancing a coupling and fixing degree and preventing any screw from being released.
  • An object of the present invention is to provide a dental implant assembly, in which, among a slope contact surface and a thread contact surface where an abutment is in contact with a fixture, a contact area of the thread contact surface is relatively increased, so that a coupling and fixing degree between the abutment and the fixture may be enhanced.
  • a dental implant assembly that is implanted in an oral cavity to replace a lost tooth
  • the dental implant assembly including: a fixture implanted in an alveolar bone, the fixture having an inner circumferential slope surface at an upper portion thereof and a female screw at an inner portion thereof; an abutment coupled to the fixture to locate a dental prosthesis on the fixture, the abutment having an outer circumferential slope surface in contact with the inner circumferential slope surface and a male screw threadly engaged with the female screw; and a slope contact surface defined by contact between the inner circumferential slope surface and the outer circumferential slope surface, wherein a contact area of the slope contact surface is smaller than an area of the inner circumferential slope surface.
  • any one of the inner circumferential slope surface and the outer circumferential slope surface that define the slope contact surface has a concave groove.
  • an area of the groove is not greater than 80% of the entire area of the slope contact area.
  • the groove preferably comprises one or more grooves.
  • the groove is preferably located in the slope contact surface, and contact portions are present at upper and lower locations of the groove in the slope contact surface, respectively.
  • the male screw is preferably formed integrally with the abutment.
  • the abutment preferably has a through hole vertically formed therein, and the male screw is formed on an abutment screw which is inserted through the through hole and coupled to the fixture couple the abutment to the fixture.
  • a dental implant assembly that is implanted in an oral cavity to replace a lost tooth
  • the dental implant assembly including: a fixture implanted in an alveolar bone, the fixture having an inner circumferential slope surface at an upper portion thereof; an abutment coupled to the fixture to locate a dental prosthesis on the fixture, the abutment having an outer circumferential slope surface in contact with the inner circumferential slope surface; and a groove concavely formed in the outer circumferential slope surface of the abutment to decrease a contact area between the outer circumferential slope surface and the inner circumferential slope surface.
  • a dental implant assembly capable of enhancing a coupling and fixing degree between an abutment and a fixture by decreasing a contact area of a slope contact surface where the abutment is in contact with the fixture.
  • a coupling torque for the abutment is constant, a normal force of the contact portion between the fixture and the abutment in the dental implant assembly according to the present invention may be increased in comparison to the conventional cases, thereby enhancing a preload.
  • Fig. 1 is a side sectional view showing a conventional implant assembly
  • Fig. 2 is a side sectional view showing an implant assembly according to the present invention
  • Fig. 3 is an enlarged sectional view showing a thread contact surface of the implant assembly according to the present invention.
  • Figs. 4a and 4b show various examples of an abutment employed in the implant assembly according to the present invention.
  • Fig. 2 is a side sectional view showing an implant assembly according to the present invention
  • Fig. 3 is an enlarged sectional view showing a thread contact surface of the implant assembly according to the present invention.
  • Figs. 4a and 4b show various examples of an abutment employed in the implant assembly according to the present invention.
  • the dental implant assembly includes a fixture 10 implanted in an alveolar bone, and an abutment 20 coupled to the fixture 10 so that a dental prosthesis (not shown) may be located on the fixture 10.
  • a dental prosthesis (not shown) may be located on the fixture 10.
  • the dental prosthesis may be attached to the abutment 20.
  • the fixture 10 and the abutment 20 are coupled with each other by means of thread-engagement between a female screw 11 formed on an inner circumference of the fixture 10 and a male screw 21 formed on a lower outer circumference of the abutment 20.
  • a fixing force namely a rotational torque for coupling, between the fixture 10 and the abutment 20 may be obtained from a frictional force at a contact surface between the fixture 10 and the abutment 20.
  • the fixture 10 and the abutment 20 are contacted with each other at two contact surfaces, namely a slope contact surface where an upper inner circumferential slope surface 12 of the fixture 10 is in contact with an outer circumferential slope surface 22 of the abutment 20 and a thread contact surface where the female screw 11 of the fixture 10 is in contact with the male screw 21 of the abutment 20.
  • the fixture 10 is in contact with the abutment 20 at two contact surfaces of the slope contact surface and the thread contact surface.
  • a non-contact region is formed in the slope contact surface as a contact area of the slope contact surface is decreased.
  • Fig. 2 illustrates that the non-contact area is defined by a groove 23 concavely formed in the outer circumferential slope surface 22 of the abutment 20, but it is natural that a groove may also be formed in the inner circumferential slope surface 12 of the fixture 10.
  • An area of the groove 23 is preferably not greater than 80% of the entire area of the slope contact surface. Also, the groove 23 is preferably located within the slope contact surface. In other words, as shown in Fig. 2, the groove 23 is preferably located so that contact portions are present at upper and lower locations of the groove 23, respectively.
  • a contact area of the slope contact surface may be decreased in comparison with the case having no groove 23, and accordingly a frictional force used for coupling between the fixture and the abutment is mainly generated at the thread contact surface.
  • a contact area of the slope contact surface may be reduced smaller than an area of the thread contact surface. If necessary, a contact area of the thread contact surface may be configured to be relatively larger than that of the slope contact surface.
  • a normal force is applied in a direction perpendicular to the slope contact surface.
  • the contact area of the slope contact surface is decreased due to the groove 23, so the contact area of the thread contact surface is relatively increased.
  • the normal force at the slope contact surface may be increased in comparison with the conventional cases, thereby enhancing a preload.
  • Figs. 4a and 4b show an abutment of the dental implant assembly according to the present invention, where Fig. 4a shows that one groove 23 is formed in the outer circumferential slope surface 22 of the abutment, and Fig. 4b shows that two grooves 23 are formed.
  • the abutment of the present invention may have one or more grooves 23.
  • one or more grooves may be formed in the inner circumferential slope surface of the fixture.
  • the screw i.e., the male screw 21
  • the screw is integrally formed at the abutment 20 to couple the fixture with the abutment
  • an additional abutment screw is inserted into a through hole vertically formed within the abutment so that the abutment may be coupled to 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)
  • Dental Prosthetics (AREA)

Abstract

La présente invention concerne un ensemble implant dentaire dans lequel une zone de contact de filetages en contact mutuel pour couplage d'un point d'appui avec un ancrage est relativement augmentée de manière à améliorer un degré de couplage et d'ancrage entre le point d'appui et l'ancrage. La présente invention concerne un ensemble implant dentaire qui est implanté dans une cavité orale pour remplacer une dent perdue, comprenant un ancrage implanté dans un os alvéolaire et ayant une surface inclinée circonférentielle interne au niveau d'une partie supérieure de celui-ci et une vis femelle au niveau d'une partie interne de celui-ci ; un point d'appui couplé à l'ancrage pour placer une prothèse dentaire sur l'ancrage, le point d'appui ayant une surface inclinée circonférentielle externe en contact avec la surface inclinée circonférentielle interne et une vis mâle engagée par filetage avec la vis femelle ; et une surface de contact inclinée définie par contact entre la surface inclinée circonférentielle interne et la surface inclinée circonférentielle externe, où une zone de contact de la surface de contact inclinée est plus petite qu'une zone de la surface inclinée circonférentielle interne.
PCT/KR2010/004895 2009-12-08 2010-07-26 Ensemble implant dentaire Ceased WO2011071228A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2009-0120996 2009-12-08
KR1020090120996A KR20110064402A (ko) 2009-12-08 2009-12-08 치과용 임플란트 조립체

Publications (1)

Publication Number Publication Date
WO2011071228A1 true WO2011071228A1 (fr) 2011-06-16

Family

ID=44145752

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/004895 Ceased WO2011071228A1 (fr) 2009-12-08 2010-07-26 Ensemble implant dentaire

Country Status (2)

Country Link
KR (1) KR20110064402A (fr)
WO (1) WO2011071228A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2486890A4 (fr) * 2010-02-23 2012-09-19 Strong Co Ltd T Butée pour implant
WO2022099393A1 (fr) 2020-11-10 2022-05-19 Jjgc Indústria E Comércio De Materiais Dentários S.A. Système de composants et d'implants dentaires comprenant des configurations géométriques permettant uniquement un montage entre des pièces correspondantes
CN115153916A (zh) * 2014-02-05 2022-10-11 施特劳曼控股股份公司 植入体基台

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102055821B1 (ko) * 2017-09-18 2019-12-16 오스템임플란트 주식회사 치과용 임플란트 조립체 및 그 제조방법
KR102218969B1 (ko) * 2018-11-23 2021-02-22 유창민 틀니 임플란트 어셈블리의 틀니지지체

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100428934B1 (ko) * 2001-10-11 2004-04-29 주식회사 덴티움 임플란트 시술용 임프레션 코핑
JP2005270334A (ja) * 2004-03-24 2005-10-06 Shoichi Saito 歯科用インプラント
KR100672796B1 (ko) * 2000-04-19 2007-01-23 헤레우스 쿨처 게엠베하 운트 코. 카게 의료용 임플란트
KR20070098219A (ko) * 2006-03-31 2007-10-05 이종호 신경성장인자 공급용 임플란트
KR100788455B1 (ko) * 2006-06-21 2007-12-24 주식회사 워랜텍 임플란트의 어버트먼트

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100672796B1 (ko) * 2000-04-19 2007-01-23 헤레우스 쿨처 게엠베하 운트 코. 카게 의료용 임플란트
KR100428934B1 (ko) * 2001-10-11 2004-04-29 주식회사 덴티움 임플란트 시술용 임프레션 코핑
JP2005270334A (ja) * 2004-03-24 2005-10-06 Shoichi Saito 歯科用インプラント
KR20070098219A (ko) * 2006-03-31 2007-10-05 이종호 신경성장인자 공급용 임플란트
KR100788455B1 (ko) * 2006-06-21 2007-12-24 주식회사 워랜텍 임플란트의 어버트먼트

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2486890A4 (fr) * 2010-02-23 2012-09-19 Strong Co Ltd T Butée pour implant
CN115153916A (zh) * 2014-02-05 2022-10-11 施特劳曼控股股份公司 植入体基台
WO2022099393A1 (fr) 2020-11-10 2022-05-19 Jjgc Indústria E Comércio De Materiais Dentários S.A. Système de composants et d'implants dentaires comprenant des configurations géométriques permettant uniquement un montage entre des pièces correspondantes
JP2023553754A (ja) * 2020-11-10 2023-12-25 ジェイジェイジーシー インダストリア エ コメルシオ デ マテリアイス デンタリオス エス．エー． 対応するパーツ間の組み立てのみが可能な形状的構成を含む歯科コンポーネント及びインプラントのシステム

Also Published As

Publication number Publication date
KR20110064402A (ko) 2011-06-15

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