수복재료와 임플랜트 종류에 따른 임플랜트 및 지지조직의 응력분포
The Stress Analysis of Supporting Tissue and Implant According to Crown Restorative Materials and Type of Implant
최창환, 오종석, 방몽숙,
소속 상세정보
최창환 ( Choi Chang-Hwan ) - 전남대학교 치과대학 치과보철학교실
오종석 ( Oh Jong-Suk ) - 전남대학교 의과대학 미생물학교실
방몽숙 ( Vang Mong-Sook ) - 전남대학교 치과대학 치과보철학교실
KMID : 0362420020400010053
Abstract
This study was aimed to analyze the stress distribution of implant and supporting tissue in single tooth implant restoration using Bra nemark system(Nobel Biocare,Gothenberg,Sweden) and Bicon system(Bicon Dental Implants,Boston,MA).Two dimensional finite element analysis model was made at mandibular first premolar area.As a crown materials porcelain,ceromer,ADA typeIIIgold alloy were used.Tests have been performed at 25Kgf vertical load on central fossa of crown portion and at 10Kgf load with 45 lateral direction on cusp inclination The displacement and stresses of implant and supporting structures were analyzed to investigate the influence of the crown material and the type of implant systems by finite element analysis The results were obtained as follows: 1.The type of crown material influenced the stress distribution of superstructure,but did not influence that of the supporting alveolar bone. 2.The stress distribution of ceromer and typeIIIgold alloy and porcelain is similar. 3.Stress under lateral load was about twice higher than that of vertical load in all occlusal restorative materials. 4.In Bicon system,stress concentration is similar in supporting bone area but CerOne system generated about 1.5times greater stress more in superstructure material. 5.In Bra nemark models,if severe occlusal overload is loaded in superstructure,gold screw or abutment will be fractured or loosened to buffer the occlusal overload but in Bicon models such buffering effect is not expected,so in Bicon model,load can be concentrated in alveolar bone area.
키워드
Implant; Stress distribution; Finite element analysis; Superstructure; Supporting alveolar bone
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