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Finite element analysis on the connection types of abutment and fixture
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수종의 내부연결형 임플란트에서 연결부의 형태에 따른 응력분포의 유한요소 분석

논문 기본 정보

Type
Academic journal
Author
Journal
The Korean Academy Of Prosthodontics 대한치과보철학회지 대한치과보철학회지 제50권 제2호 KCI Accredited Journals
Published
2012.1
Pages
119 - 127 (9page)

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Finite element analysis on the connection types of abutment and fixture
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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 30􀆆inclined 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.
#치과용 임플란트 #3차원 유한요소분석 #교합력 #임플란트-지대주 연결 #내부연결형 임플란트 #Dental Implants #3 Dimensional Finite Element Analysis #Occlusal Force #Internal Connection Implant #Implant-Abutment Connection

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Adell R / 1981 / A 15 year study of osseointegrated implants in the treatment of the edentulous jaw / Int J Oral Surg 10 : 387 ~ 416 google schola Adell R / 1986 / Marginal tissue reactions at osseointegrated titanium fixtures (I) A 3 year longitudinal prospective study / Int J Oral Surg 15 : 39 ~ 52 google schola Becker W / 1995 / Replacement of maxillary and mandibular molars with single endosseous implant restorations: a retrospective study / J Prosthet Dent 74 : 51 ~ 55 google schola Block MS / 1996 / Hydroxyapatite-coated cylindrical implants in the posterior mandible: 10-year observations / Int J Oral Maxillofac Implants 11 : 626 ~ 633 google schola Bogg google schola

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