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WO2011027975A2 - Ensemble d'implant dentaire comprenant une marche anti-affaissement - Google Patents

Ensemble d'implant dentaire comprenant une marche anti-affaissement Download PDF

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Publication number
WO2011027975A2
WO2011027975A2 PCT/KR2010/004897 KR2010004897W WO2011027975A2 WO 2011027975 A2 WO2011027975 A2 WO 2011027975A2 KR 2010004897 W KR2010004897 W KR 2010004897W WO 2011027975 A2 WO2011027975 A2 WO 2011027975A2
Authority
WO
WIPO (PCT)
Prior art keywords
abutment
settlement
fixture
preventing
implant assembly
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/KR2010/004897
Other languages
English (en)
Other versions
WO2011027975A3 (fr
Inventor
Hyeon Cheol Jeong
Byung Kook Kim
Mu Yong Park
Tae Gwan Eom
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 WO2011027975A2 publication Critical patent/WO2011027975A2/fr
Publication of WO2011027975A3 publication Critical patent/WO2011027975A3/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
    • 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
    • A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection
    • A61C8/0072—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection including male and female conical parts with different angles
    • 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
    • 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 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 having a settlement-preventing step so as to prevent an abutment from settling due to a vertical load caused by mastication after the dental implant assembly is implanted.
  • 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) is composed of 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 with 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 impressing 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.
  • Fig. 1 is a side sectional view showing a conventional implant assembly.
  • the conventional implant assembly includes a fixture 1 implanted in an alveolar bone, an abutment 5 coupled with the fixture 1, and a dental prosthesis (not shown) fixed to the fixture 1 by means of the abutment 5.
  • the abutment 2 may be fixed to the fixture 1 by means of an abutment screw 3 which passes through the abutment 2.
  • the abutment 2 may settle, thereby causing inexact occlusion problem. Also, the settlement of the abutment 2 may reduce a preload of the abutment screw 3, which may result in releasing the screw.
  • An object of the present invention is to provide a dental implant assembly having a settlement-preventing step, which may be engaged with a fixture and an abutment, so as to prevent the abutment from settling due to a vertical load after the dental implant assembly is implanted.
  • 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; an abutment coupled with the fixture to locate a dental prosthesis on the fixture; and a settlement-preventing means for preventing settlement of the abutment by being in contact with the fixture when the abutment is coupled with the fixture.
  • the settlement-preventing means preferably includes a settlement-preventing step formed at an outer circumference of the abutment so that the settlement-preventing step is locked to an upper inner circumferential edge of the fixture.
  • the settlement-preventing step preferably convexly protrudes on the outer circumference of the abutment in a ring shape.
  • the settlement-preventing means may include: a settlement-preventing concavity concavely formed in an inner circumference of the fixture; and a settlement-preventing convexity convexly formed on the outer circumference of the abutment, which is inserted into the fixture, at a location corresponding to the settlement-preventing concavity.
  • the settlement-preventing means may include: a settlement-preventing convexity convexly formed on an inner circumference of the fixture; and a settlement-preventing concavity concavely formed in the outer circumference of the abutment, which is inserted into the fixture, at a location corresponding to the settlement-preventing convexity.
  • the settlement-preventing concavity is preferably formed in a ring shape, and the settlement-preventing convexity is formed in a ring shape or as protrusions spaced apart by regular intervals.
  • the settlement-preventing means preferably includes a settlement-preventing bottom formed at a lower end of an abutment insert portion of the abutment so that a lower end of the abutment is in contact with the settlement-preventing bottom.
  • the fixture may include an outer circumferential thread formed on an outer circumferential surface thereof to allow insertion and coupling into an alveolar bone; an inner circumferential thread formed on a lower portion of an inner circumferential surface thereof to be coupled with an abutment screw; and an abutment insert portion formed at an upper portion of the inner circumferential surface, thereby having a diameter greater than the inner circumferential thread so that a lower end of the abutment is inserted therein.
  • the abutment may include a through hole formed therein so that the abutment screw passes therethrough; and a lower end having a diameter and shape so that the lower end is inserted into the abutment insert portion of the fixture.
  • the abutment insert portion may have a first slope with an inner diameter gradually decreased downwards from an upper inner circumferential edge of the fixture, and the lower end of the abutment may have a second slope with an outer diameter gradually decreased downwards. The second slope is in contact with the first slope when the abutment is coupled with the fixture.
  • the dental implant assembly having the settlement-preventing step, which may be engaged with the fixture and the abutment, so as to prevent the abutment from settling due to the vertical load after the dental implant assembly is implanted.
  • the dental implant assembly according to the present invention when used, even if a bridge-type prosthesis is used, it is possible to prevent the stress from being focused on the connection portion between adjacent prostheses due to the settlement of at least one abutment, thereby preventing the prosthesis and the fixture from being broken down.
  • 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 a first embodiment of the present invention
  • Fig. 3 is a side sectional view showing an implant assembly according to a second embodiment of the present invention.
  • Fig. 4 is a side sectional view showing an implant assembly according to a modification of the second embodiment of the present invention.
  • FIG. 5 is a side sectional view showing an implant assembly according to a third embodiment of the present invention.
  • Fig. 2 is a side sectional view showing an implant assembly according to a first embodiment of the present invention.
  • the implant assembly according to the first embodiment of the present invention includes a fixture 10 implanted in an alveolar bone, an abutment 20 coupled with the fixture 10 so that a dental prosthesis may be located on the fixture 10, and a settlement-preventing means capable of preventing settlement of the abutment 20 when the abutment 20 is coupled with the fixture 10.
  • the abutment 20 may be fixed to the fixture 10 by means of an abutment screw 30 which passes through the abutment 20.
  • the fixture 10 may includes an outer circumferential thread 11, formed on an outer circumferential surface, for allowing insertion and coupling into the alveolar bone; an inner circumferential thread 12, formed on a lower portion of an inner circumferential surface, with which the abutment screw 30 is coupled; and an abutment insert portion 13, formed at an upper portion of the inner circumferential surface, which has a diameter greater than the inner circumferential thread 12 so that a lower end of the abutment 20 may be inserted therein.
  • the abutment insert portion 13 may have a first slope 14 which is tapered so that its inner diameter is gradually decreased downwards from an upper inner circumferential edge of the fixture 10.
  • the abutment 20 may include a through hole 21 formed therein so that the abutment screw 30 may pass through it, and a lower end 22 having a diameter and shape corresponding to the abutment insert portion 13 of the fixture 10 so that it may be inserted into the abutment insert portion 13.
  • the lower end 22 of the abutment may have a second slope 23 which is tapered so that the outer diameter of the second slope 23 is gradually decreased downwards.
  • the second slope 23 may be in contact with the first slope 14 of the fixture 10 when the abutment 20 is coupled with the fixture 10.
  • a settlement-preventing step 41 may be formed on the abutment 20 so that the step is locked at the upper inner circumferential edge of the fixture 10.
  • the settlement-preventing step 41 of the first embodiment serving as the settlement-preventing means preferably protrudes upwards over the second slope 23 formed at the lower outer circumferential surface of the abutment 20.
  • the protruding settlement-preventing step 41 of the first embodiment is contacted with the upper inner circumferential edge of the fixture 10, so it may securely prevent settlement of the abutment 20.
  • the settlement-preventing step 41 may be convex in an oval shape on the outer circumference of the abutment 20, or it may also be formed as protrusions convexly formed at regular intervals.
  • Fig. 3 is a side sectional view showing an implant assembly according to a second embodiment of the present invention.
  • the settlement-preventing means includes the settlement-preventing step 41 formed on the abutment 20 so that it is locked to the upper inner circumferential edge of the fixture 10
  • the second embodiment is different from the first embodiment in that the settlement-preventing means in the implant assembly of the second embodiment includes a settlement-preventing concavity 42 concavely formed in the first slope 14 of the fixture 10, and a settlement-preventing convexity 43 convexly formed on the abutment 20 at a location corresponding to the second slope 23.
  • Fig. 3 illustrates that the settlement-preventing concavity 42 and the settlement-preventing convexity 43 are formed at the first slope 14 of the fixture 10 and the second slope 23 of the abutment 20 as the settlement-preventing means, respectively, however the settlement-preventing concavity 42 and the settlement-preventing convexity 43 need not be always formed onto the slopes.
  • the settlement-preventing concavity 42 is formed at the first slope 14 of the fixture 10 in a ring shape
  • the settlement-preventing convexity 43 may be formed at the second slope 23 of the abutment 20 in a ring shape or formed as protrusions spaced apart by regular intervals.
  • the settlement-preventing convexity 43 may be formed in the inner circumference of the fixture 10, and the settlement-preventing concavity 42 may be formed in the outer circumference of the abutment 20, as shown in Fig. 4.
  • Fig. 5 is a side sectional view showing an implant assembly according to a third embodiment of the present invention.
  • the settlement-preventing means includes the settlement-preventing step 41 formed on the abutment 20 so that it is locked to the upper inner circumferential edge of the fixture 10
  • the third embodiment is different from the first embodiment in that the settlement-preventing means in the implant assembly of the third embodiment includes a settlement-preventing bottom 44 formed at a lower end of the abutment insert portion 13 of the fixture 10 so that the lower end of the abutment 20 is locked thereto.
  • the lower end of the abutment 20 does not have a horizontal plain but is inclined toward the outer circumference, and the settlement-preventing bottom 44 of the fixture 10 is also inclined with the same angle correspondingly.
  • various shapes or designs may be used instead of such inclined shapes only if the lower end of the abutment 20 and the settlement-preventing bottom 44 of the fixture 10 may have corresponding shapes.
  • the dental implant assembly according to the first embodiment of the present invention had the same size as the conventional dental implant assembly, and the applied static load and repeated load were respectively 500N.
  • the dental implant assembly according to the present invention exhibits a remarkably small amount of settlement in comparison to the conventional dental implant assembly after applying not only a static load but also repeated loads thereto.
  • a load of the same magnitude was applied (sink-down test), and then a torque required for releasing the abutment screw was measured. Also, after repeated loads of the same frequency (14 Hz) and the same magnitude (250N) were applied as much as the same number (10,000 times) (cantilever fatigue test), an amount of settlement of the abutment was measured. Comparison results of the measured values are shown in Table 2.
  • the dental implant assembly according to the present invention requires a remarkably high torque for releasing the abutment screw in comparison to the conventional dental implant assembly even after a load is applied thereto.
  • the dental implant assembly of the present invention if used, a preload of the abutment screw is not decreased since an amount of settlement is small rather than conventional cases, and accordingly the implant assembly may be maintained in a state that a torque required for releasing the abutment screw is not reduced. Thus, it is possible to prevent the abutment screw from being released unintentionally.

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  • 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 d'implant dentaire comportant une marche anti-affaissement destinée à empêcher une butée de s'affaisser du fait d'une contrainte verticale provoquée par la mastication après que l'ensemble d'implant dentaire ait été implanté. La présente invention concerne un ensemble d'implant dentaire implanté dans une cavité orale pour remplacer une dent perdue et comprend un montage implanté dans un os alvéolaire, une butée couplée au montage destinée à localiser une prothèse dentaire sur le montage, et un moyen destiné à empêcher l'affaissement de la butée par contact avec le montage lorsque la butée est couplée au montage.
PCT/KR2010/004897 2009-09-01 2010-07-26 Ensemble d'implant dentaire comprenant une marche anti-affaissement Ceased WO2011027975A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2009-0082079 2009-09-01
KR1020090082079A KR101067668B1 (ko) 2009-09-01 2009-09-01 침하방지 단차를 갖는 치과용 임플란트 조립체

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Publication Number Publication Date
WO2011027975A2 true WO2011027975A2 (fr) 2011-03-10
WO2011027975A3 WO2011027975A3 (fr) 2011-05-26

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KR (1) KR101067668B1 (fr)
WO (1) WO2011027975A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101072274B1 (ko) 2011-04-21 2011-10-11 (주) 시원 분리형 치과용 임플란트
CN109069232A (zh) * 2016-04-12 2018-12-21 株式会社南陶 固定物、植入物

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101630445B1 (ko) * 2014-03-27 2016-06-14 장영진 임플란트용 어버트먼트
KR102815532B1 (ko) * 2022-04-22 2025-06-02 주식회사 덴플렉스 치과 임플란트용 지대주
KR102556032B1 (ko) 2022-10-21 2023-07-13 채희진 치과용 임플란트 상부구조물 침하방지 및 어버트먼트 스크류 풀림방지를 위한 치아 임플란트 구조물

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100537218B1 (ko) * 2003-03-13 2005-12-16 허영구 나사/시멘트 유지형 임플란트용 어버트먼트
KR100561877B1 (ko) * 2003-11-13 2006-03-21 진태선 인공치아용 임플란트의 지르코늄 어버트먼트 제조방법
KR100632384B1 (ko) * 2005-03-04 2006-10-12 주식회사 케이 디이 씨이 치과용 임플란트 유니트
KR100665046B1 (ko) 2006-09-01 2007-01-04 (주)이비아이 스크루가 내장된 임플란트 연결기둥의 체결구조
KR20090070982A (ko) * 2007-12-27 2009-07-01 주식회사 쿠보텍 나사풀림을 방지하는 인공치아용 임플란트

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101072274B1 (ko) 2011-04-21 2011-10-11 (주) 시원 분리형 치과용 임플란트
CN109069232A (zh) * 2016-04-12 2018-12-21 株式会社南陶 固定物、植入物

Also Published As

Publication number Publication date
WO2011027975A3 (fr) 2011-05-26
KR101067668B1 (ko) 2011-09-27
KR20110024189A (ko) 2011-03-09

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