임플란트 고정체 지대주 연결구조에 따른 치조골의 유한요소응력 분석
- Author(s)
- 변욱
- Issued Date
- 2011
- Abstract
- ABSTRACT
Finite Element Stress Analysis of Alveolar Bone according to the Various Connections of Implant Fixture-Abutment
Byun, Wook, D.D.S.
Advisor: Prof. Kang, Dong Wan, D.D.S., M.S.D., Ph.D.
Department of Dentistry,
Graduate School of Chosun University
The purpose of this study was to make a qualitative comparison and evaluation by means of 3D finite element analysis, the stress distribution produced by simulated different load applied against three types of internal connection implant system(one stepped and two tapered type).
The finite element model was designed with the parallel placement of the one fixtures (4.0 mm × 11.5 mm) with isosceles trapezoidal thread on the mandibular 1st molar.
The inner cancellous bone and the outer 3 mm cortical bone were designed, As the bone quality, and the cortical and cancellous bone were assumed to have bonded perfectly to the implant fixture.
Two models were loaded with 200 N magnitude in the vertical directions on the loading point position of the crown on the 0.0mm, 1.5 mm and the 3.0 mm buccal offset point from the central position of the fixture. The distributed oblique load was applied at the angle of 30° on the crown surface.
Von Mises stress value was recorded and compared in the fixture-bone interface in the bucco-lingual dimension.
The results were as follows;
1.As the loading condition was away from the central position of implant fixture, stress pattern was concentrated as crater form in the cortical bone around the loading side on the neck of the fixture.
2.In comparison between the 3.0 mm offset vertical loading and the distributed oblique loading models with the 50% fixture- abutment interface, the stepped model had more mechanical stability with the reduced max. stress. On the other hand, 11° and 5.74° tapered models showed a increased max. stress compared to the stepped type of internal connection.
3.As the contact of fixture-abutment interface to the inner wall of implant fixture was increased, the stress concentration was reduced.
It was concluded that the offset loading condition was a key factor affecting the pattern and magnitude of stress over the surrounding bone of the fixture under the vertical and oblique loading conditions.
It is recommended to place the dynamic occlusal contacts within the width of the neck of implant fixture.
- Alternative Title
- Finite Element Stress Analysis of Alveolar Bone according to the Various Connections of Implant Fixture-Abutment
- Alternative Author(s)
- Byun, Wook
- Affiliation
- 조선대학교 대학원
- Department
- 일반대학원 치의학과
- Advisor
- 강동완
- Awarded Date
- 2012-02
- Table Of Contents
- 목 차
ABSTRACT ⅳ
Ⅰ. 서 론 1
Ⅱ. 연구 재료 및 방법 2
1. 연구재료 2
1-1 유한요소모델의 설계 2
1-2 하중조건 4
1-3 경계조건 4
1-4 물성치 5
2. 응력분석 5
Ⅲ. 연구 성적 6
1. 치관 중심부에 수직하중 부여시 치조골 상 응력 분포 6
2. 치관 중심으로부터 1.5 mm 부위에 수직하중 부여시 치조골 상 응력 분포 6
3. 치관 중심으로부터 3.0 mm 부위에 수직하중 부여시 치조골 상 응력 분포 7
4. 치관에 경사형 분포하중 부여시 치조골 상 응력 분포 7
Ⅳ. 총괄 및 고안 9
Ⅴ. 결 론 15
참 고 문 헌 16
- Degree
- Master
- Publisher
- 조선대학교 대학원
- Citation
- 변욱. (2011). 임플란트 고정체 지대주 연결구조에 따른 치조골의 유한요소응력 분석.
- Type
- Dissertation
- URI
- https://oak.chosun.ac.kr/handle/2020.oak/9417
http://chosun.dcollection.net/common/orgView/200000256872
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