하악 구치부에서 임플란트 고정체와 지대주의 협설 기울기에 따른 응력분포에 관한 삼차원 유한요소 분석
Three Dimensional Finite Element Analysis on Stress Distribution According to the Bucco-lingual Inclination of the Implant Fixture and Abutment in the Mandibular Posterior Region
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
본 연구는 임플란트의 지대주와 고정체의 식립 기울기 변화에 따른 교합력의 응력 분산을 비교 분석하고자 하였다. 치아 장축에 평행하게 식립한 임플란트 위에 직선적 지대주를 체결한 것을 기준 모델로 하여, 15°, 25° 설측 경사진 지대주를 체결한 모델 2종류, 고정체를 15°, 25° 설측 경사 식립 후 동일 각도의 협측 경사의 지대주를 체결한 모델 2종류, 총 5개의 연구 모델에 각각 수직하중과 경사하중을 부가하여 나타난 응력분포를 3차원 유한요소법(finite elementanalysis)를 이용하여 분석하였다. 연구 결과, 지대주와 고정체의 식립 기울기가 증가할수록 복합하중에서 임플란트와 주위조직의 응력은 증가하였다. 다만 하중의 위치와 종류에 따라 응력의 변화가 모델에 따라 부분적으로 다르게 나타나기도 했다. 이는 응력이 하중의 작용선과 임플란트 고정체의 중심선과의 거리인 수평적 편심부하(horizontal offset)가 변화한 결과이며, 편심부하가 증가할수록 응력도 증가하는 결과를 보였다.
Abstract
The purpose of this study was to comparatively analyze the stress distribution according to the inclinations of abutments and angulations of the implant fixtures under occlusal loading force. Three study models with straight and 15° and 25°-angled abutments were prepared following the insertion of I mplants parallel to the long axis of the tooth. Additional two experimental models were fabricated with 15° and 25° fixture inclinations. Using ANSYS 11, a finite element analysis program, the magnitudes of stress distribution were analyzed. The magnitude of stress under loading was lowest when the load was applied vertically onto the axis of implant. And the magnitude of stress under compound(vertical+oblique) loading was increased as the inclination of implant abutment and fixture was increase. But, the distribution of stress was different as the loading conditions, because of the horizontal offset. As the offset between the axis of loading and the central axis of the implant increased, the stress was increased.
참고문헌 (30)
- Weinberg LA, "Biomechanical considerations when combining tooth-supported and implant-supported prostheses", Oral Surg Oral Med Oral Pathol, 78, pp.22~27 (1994)
- Bränemark PI, "Osseointegration and its experimental background", J Prosthet Dent, 50, pp.399~410 (1983)
- David CH, "Comparison of stress transmission in the IMZ implant system with polyoxymethylene or titanium intramobile element - A finite element strss analysis", Int J Oral Maxillofac Implants, 7, pp.450~458 (1992)
- Davis DM, "Studies on frameworks for osseointegrated prostheses. Part1. The effect of varying the number of supporting abutments", Int J Oral Maxillofac Implants, 3, pp.197~201 (1988)
- Ferrario V, "Biomechanical module of the human mandible - A hypothesis involving stabilizing activity of the superior belly of lateral pterygoid muscle", J Prosthet Dent, 68, pp.829~835 (1992)
- Haldun I, "Comparative evaluation of the effect of diameter, length and number of implants supporting three-unit fixed partial prostheses on stress distribution in the bone", J Dent, 30, pp.41~46 (2002)
- Bergman B, "Evaluation of results of treatment with osseointegrated implants by the Swedish National Board of Health and welfare", J Prosthet Dent, 50, pp.114~120 (1983)
- Borchers I, "Three Dimensional stress distribution around dental implants at different stages of interface development", J Dent Res, 62, pp.155~159 (1994)
- Bidez MW, "Issues in bone mechanics related to oral implants", Implant Dent, 1, pp.289~294 (1992)
- Cowin SC, "Bone mechanics" (1989), Boca Raton, Fla, CRC Press
- Misch CE, "Implant-protected occlusion: a biomechanical rationale", Compend Cont Educ Dent, 15, pp.1330~1343 (1994)
- Cibirka RM, "Determining the force absorption quotient for restorative materials used in implant occlusal surfaces", J Prosthet Dent, pp.361~364 (1992)
- O'Brien WJ, "Dental materials & their selection", pp.259~272 (1997), Chicago: Quintessence;
- Boyer R, "Materials Properties Handbook: Titanium Alloys", pp.12~22 (1994), Rotherham: ASM International
- Holt JM, "Structural Alloys Handbook", pp.1996, West Lafayette: CINDAS
- Moyen BJ, "Effect of application of metal plates to bone. Comparison of a rigid with a flexible plate", Acta Orthop Belg, 46, pp.806~815 (1980)
- Hassler CR, "Measurements of healing at an osteotome in a rabbit calvarium: the influence of applied compressive stress on collagen synthesis and calcification", J Biomechanics, 7, pp.545~550 (1974)
- Soltesz U, "Principal characteristics of the stress distribution in the jaw caused by dental implants in Biomechanics: principles and applications", pp.439~444 (1982), The Hague: Martinus Nijhoff
- BindermanⅠ, "NIH grant study on two-dimensional FEA study of 54 implant body designs", ~ (1973)
- Lavernia CJ, "Analysis of stresses in a dental implant system", J Biomech, 14, pp.555~560 (1981)
- Richter EJ, "Dental implant abutment resembling the two-phase tooth mobility", J Biotech, 23, pp.297~306 (1990)
- Cook RD, "Concepts and applications of finite element analysis. 4th ed", pp.542~573 (2001), New York: JohnWiley & Sons
- Haraldson T, "Biteforce and oral function in patients with osseointegrated oral implants", Scand J Dent Res, 85, pp.200~208 (1977)
- Siegele D, "Numerical investigations of the influence of implant shape on stress distribution in the jaw bone", Int J Oral Maxillofac Implants, 4, pp.333~340 (1989)
- Sertgoz A, "Finite element analysis study of the effect of superstructure material on stress distribution in an implant supported fixed prosthesis", Int J Prosthodont, 10, pp.19~27 (1997)
- Issidor F, "Loss of osseointegration caused by occlusal load of oral implants. A clinical and radiographic study in monkeys", Clin Oral Implant Res, 7, pp.143~152 (1996)
- Reiger MR, "A finite element survey of eleven endosseous implants", J prosphet Dent, 63, pp.457~465 (1990)
- Holmgren EP, "Evaluating parameter of osseointegrated dental implant using finite element analysis a two-dimensional comparative study examining the effect of implant diameter, implant shape and load direction", J Oral Implantol, 14, pp.80~88 (1998)
- Clelland NL, "Three dimensional finite element stress analysis in and arround the screw-vent implant", Int J Oral Maxillofac Implants, 6, pp.391~398 (1991)
- Ko CC, "Micromechanics of implant", tissueinterfaces, 1992, pp.18, 220~230