수종의 내부연결형 임플란트에서 연결부의 형태에 따른 응력분포의 유한요소 분석
Finite element analysis on the connection types of abutment and fixture
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연구 목적: 본 연구는 3차원 유한요소분석을 통해 특징적인 내부연결구조를 갖는 5종의 임플란트의 고정체와 지대주의 연결방식에 따른 응력분산을 알아보고자 하였다. 연구 재료 및 방법: 본 실험을 위한 유한요소모델은 하악 제1대구치부에 임플란트가 식립되고 상부구조물로 3형 금합금을 사용하는 것으로 가정하였다. 응력분산은 200 N의 하중이 교합면의 중심, 중심에 1.5 mm 외측, 중심에서 3.0 mm 외측에 수직으로 가해지고 임플란트의 장축과 30의 각도로 경사하중이 가해지도록 하여 분석하였다. 유한요소모델에 대한 해석작업은 3G.Author (PlassoTech, California, USA)를 사용하여 이뤄졌다. 결과: 경사가 없는 내부계단 구조를 가지는 DAS tech의 임플란트의 경우, 내부연결구조를 갖는 다른 임플란트에 더 유리한 응력분산을 보였다. 하중이 임플란트 고정체의 외형선 이내에 가해지는 경우와 비교하여 외형선 바깥이나 경사력으로 전해지는 경우 더 높은 응력을 보였으며 하중조건과 관계없이 임플란트 고정체보다는 지대주에 더 큰 응력이 집중되었다. 결론: 교합력이 가해졌을 때 응력분산은 임플란트의 연결부의 형태와 하중이 가해지는 위치에 따라 달라졌으며 내부계단 구조를 가지는 DAS tech의 임플란트를 사용한 경우와 고정체의 외형선 이내에 하중이 가해졌을 경우에 더 유리한 응력분산을 보였다.
Abstract
Purpose: This study was performed to compare the stress distribution pattern of abutment-fixture connection area using 3-dimensional finite element model analysis when 5 different implant systems which have internal connection. Materials and methods: For the analysis, a finite element model of implant was designed to locate at first molar area. Stress distribution was observed when vertical load of 200 N was applied at several points on the occlusal surfaces of the implants, including center, points 1.5 mm, 3.0 mm away from center and oblique load of 200 N was applied 30inclined to the implant axis. The finite element model was analyzed by using of 3G. Author (PlassoTech, California, USA). Results: The DAS tech implant (internal step with no taper) showed more favorable stress distribution than other internally connected implants. AS compare to the situations when the loading was applied within the boundary of implants and an oblique loading was applied, it showed higher equivalent stress and equivalent elastic strain when the loading was applied beyond the boundary of implants. Regardless of loading condition, the abutments showed higher equivalent stress and equivalent elastic strain than the fixtures. Conclusion: When the occlusal contact is afforded, the distribution of stress varies depending on the design of connection area and the location of loading. More favorable stress distribution is expected when the contact load was applied within the diameter of fixtures and the DAS tech implant (internal step with no tapering) has more benefits than the other design of internally connected implants.
참고문헌 (38)
- Branemark PI, "Tissue integrated prostheses. Osseointegration in clinical dentistry" (1985), Quintessence
- Adell R, "A 15 year study of osseointegrated implants in the treatment of the edentulous jaw", Int J Oral Surg, 10, pp.387~416 (1981)
- Duyck J, "Biomechanics of oral implants: a review of the literature", Technol Health Care, 5, pp.253~273 (1997)
- Adell R, "Marginal tissue reactions at osseointegrated titanium fixtures (I) A 3 year longitudinal prospective study", Int J Oral Surg, 15, pp.39~52 (1986)
- Lindquist LW, "Bone resorption around fixtures in edentulous patients treated with mandibular fixed tissue- integrated prostheses", J Prosthet Dent, 59, pp.59~63 (1988)
- Block MS, "Hydroxyapatite-coated cylindrical implants in the posterior mandible: 10-year observations", Int J Oral Maxillofac Implants, 11, pp.626~633 (1996)
- van Steenberghe D, "Applicability of osseointegrated oral implants in the rehabilitation of partial edentulism: a prospective multicenter study on 558 fixtures", Int J Oral Maxillofac Implants, 5, pp.272~281 (1990)
- Isidor F, "Loss of osseointegration caused by occlusal load of oral implants. A clinical and radiographic study in monkeys", Clin Oral Implants Res, 7, pp.143~152 (1996)
- Brunski JB, "Biomaterials and biomechanics in dental implant design", Int J Oral Maxillofac Implants, 3, pp.85~97 (1988)
- Zarb GA, "The longitudinal clinical effectiveness of osseointegrated dental implants: the Toronto study. Part III: Problems and complications encountered", J Prosthet Dent, 64, pp.185~194 (1990)
- Merz BR, "Mechanics of the implantabutment connection: an 8-degree taper compared to a butt joint connection", Int J Oral Maxillofac Implants, 15, pp.519~526 (2000)
- Becker W, "Replacement of maxillary and mandibular molars with single endosseous implant restorations: a retrospective study", J Prosthet Dent, 74, pp.51~55 (1995)
- Jemt T, "Osseointegrated implants for single tooth replacement: a 1-year report from a multicenter prospective study", Int J Oral Maxillofac Implants, 6, pp.29~36 (1991)
- Levine RA, "A multicenter retrospective analysis of the ITI implant system used for single-tooth replacements: preliminary results at 6 or more months of loading", Int J Oral Maxillofac Implants, 12, pp.237~242 (1997)
- Han SU, "Stress analysis of supporting tissues and implants according to implant fixture shapes and implant-abutment connections", J Korean Acad Prosthodont, 42(2), pp.226~237 (2004), 대한치과보철학회
- Levine RA, "Multicenter retrospective analysis of the solidscrew ITI implant for posterior single-tooth replacements", Int J Oral Maxillofac Implants, 17, pp.550~556 (2002)
- Norton MR, "An in vitro evaluation of the strength of an internal conical interface compared to a butt joint interface in implant design", Clin Oral Implants Res, 8, pp.290~298 (1997)
- Norton MR, "Assessment of cold welding properties of the internal conical interface of two commercially available implant systems", J Prosthet Dent, 81, pp.159~166 (1999)
- Sones AD, "Complications with osseointegrated implants", J Prosthet Dent, 62, pp.581~585 (1989)
- Kallus T, "Loose gold screws frequently occur in fullarch fixed prostheses supported by osseointegrated implants after 5 years", Int J Oral Maxillofac Implants, 9, pp.169~178 (1994)
- Haas R, "Branemark single tooth implants: a preliminary report of 76 implants", J Prosthet Dent, 73, pp.274~279 (1995)
- Kim KT, "Cervical design effect of dental implant on stress distribution in crestal cortical bone studied by finite element analysis", J Korean Acad Prosthodont, 47(4), pp.385~393 (2009), 대한치과보철학회
- Boggan RS, "Influence of hex geometry and prosthetic table width on static and fatigue strength of dental implants", J Prosthet Dent, 82, pp.436~440 (1999)
- Merz BR, "Mechanics of the implantabutment connection: an 8-degree taper compared to a butt joint connection", Int J Oral Maxillofac Implants, 15, pp.519~526 (2000)
- Walton JN, "A prospective study on the maintenance of implant prostheses in private practice", Int J Prosthodont, 10, pp.453~458 (1997)
- 김유리, "내부연결방식 임플란트 시스템의 삼차원 유한요소법적 연구", 대한치과보철학회지, 44(1), pp.85~102 (2006), 대한치과보철학회
- Geng JP, "Application of finite element analysis in implant dentistry: a review of the literature", J Prosthet Dent, 85, pp.585~598 (2001)
- Weinstein AM, "Stress analysis of porous rooted dental implants", J Dent Res, 55, pp.772~777 (1976)
- Ahn JK, "Finite element stress analysis of implant prosthesis with internal connection between the implant and the abutment", J Korean Acad Prosthodont, 42(4), pp.356~372 (2004), 대한치과보철학회
- Richter EJ, "In vivo vertical forces on implants", Int J Oral Maxillofac Implants, 10, pp.99~108 (1995)
- Carlsson GE, "Functional response, In Tissue integrated prostheses. Osseointegration in clinical dentistry", pp.74~78 (1986), Quintessence
- Craig RG, "Restorative Dental Materials", pp.60~61 (1980), Mosby
- Lee HS, "A 3-dimensional finite element analysis of tapered internal connection implant system (Avana SS III(R)) on different abutment connections", J Korean Acad Prosthodont, 48(03), pp.181~188 (2010), 대한치과보철학회
- 반재혁, "임플란트 지지 하악 캔틸레버 보철물의 디자인에 따른 저작압 분산에 관한 삼차원 유한요소 분석", 대한치과보철학회지, 47(1), pp.70~81 (2009), 대한치과보철학회
- Rangert B, "Forces and moments on Branemark implants", Int J Oral Maxillofac Implants, 4, pp.241~247 (1989)
- Rangert B, "Bending overload and implant fracture: a retrospective clinical analysis", Int J Oral Maxillofac Implants, 10, pp.326~334 (1995)
- 권주홍, "단일치 임플랜트 지지 보철물에서 고정체와 지대주 나사 직경의 차이에 따른 삼차원 유한요소법적 응력 분석", 대한치과보철학회지, 43(1), pp.105~119 (2005), 대한치과보철학회
- 유성현, "수종의 임플랜트 시스템에 따른 유한요소법적 응력분석에 관한 연구", 대한치과보철학회지, 44(2), pp.207~216 (2006), 대한치과보철학회