치조골이 감소도딘 지대치를 이용한 고정성 국소의치의 유한요소법적 응력분석
Finite element stress analysis of fixed partial denture supported by the abutment with reduced alveolar bone
김영기, 최충국, 정재헌,
소속 상세정보
김영기 ( Kim Young-Gi ) - 조선대학교 치과대학 보철학교실
최충국 ( Choi Choong-Kug ) - 조선대학교 치과대학 치과보철학교실
정재헌 ( Chung Chae-Heon ) - 조선대학교 치과대학 치과보철학교실
KMID : 0362419950330010032
Abstract
The purpose of this study was to determine the displacement of prosthesis & abutment and the stress distribution patterns induced in the periodontium by applying force to the fixed prosthesis. Two levels of periodontal support were compared using two-dimensional finite element stress analysis after placement of 3 unit or 4 unit fixed parital denture(FPD) in case of missing of the lower first molar. Concentrated vertical load was delivered at the cusp tip of the second bicuspid or the central fossa of the pontic. @ES The following results were obtained: @EN 1. The greater the loss of alveolar bone in abutment teeth area, the greater the displacement of FPD and the stress concentration in alveolar bone around abutment. 2. The amount and direction of displacement and distribution of stress in the 4-unit FPD was better than those in the 3-unit FPD. 3. Multiple abutments reduced the amount of mesial and downward displacement of the weaked abutments and more uniformly distributed the stresses.
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