Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
권호 표지

Finite Element Analysis on Stress Distribution in Base Metal-Ceramic Crown Margin Designs

유한요소법을 이용한 비귀금속-도재관 변연부 형태에 따른 응력 분포 분석

  • Lee, Myung-Kon (Dept. of Dental Laboratory Technology, Jisan College) ;
  • Shin, Jung-Woog (Dept, of Biomedical Engineering, College of Biomedical Science and Engineering, Inje University) ;
  • Kim, Myung-Duk (Biomechanics Lab. Dept. of Biomedical Engineering, Inje University)
  • 이명곤 (지산대학 치기공과) ;
  • 신정욱 (인제대학교 의생명공학대학 의용공학과) ;
  • 김명덕 (인제대학교 의용공학과 생체역학교실)
  • Published : 2000.12.10
Download PDF
⟨ Previous Next ⟩

Abstract

The objective of this finite element method study was to analyze the stress distribution induced in a maxillary central incisor Ni-Cr base metal coping ceramic crowns with various margin design. Margin designs of crown in this experiment were knife-edge metal margin on chamfer finishing line of tooth preparation(M1), butt metal margin on shoulder finishing line(M2), reinforced butt metal margin on shoulder finishing line(M3), beveled metal margin on bevelde shoulder finishing line(M4). Two- dimensional finite element models of crown designs were subjected to a simulated biting force of 100N which was forced over porcelain near the lingual incisal edge. Base on plane stress analysis, the maxium von Miss stresses(Mpa) in porcelain venner was 0.432, in metal coping was 0.579, in dentin abutment was 0.324 for M1 model, and M2 model revealed in porcelain was 0.556, in metal coping was 0.511, in dentin was 0.339, and M3 model revealed in porcelain was 0.556, in metal coping was 0.794, in dentin was 0.383 for M4 model. All values of each material in metal-ceramic crown were much below the critical failure values.

Keywords