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김광훈(K. H. Kim),박정길(J. K. Park),김수한(S. H. Kim),손권(K. Son) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
The purpose of this study is to investigate the effect of the position and direction of biting force on non-carious cervical lesion of a premolar. A three dimensional finite element model was constructed from the micro-CT pictures of a normal extracted human maxillary second premolar. A notch-shaped lesion cavity was made at the cervical area of the FE model and filled with conventional hybrid and flowable resin, respectively. Biting force of 200 N was applied on the upper third of the palatal cusp in force directions: vertical(0°), 20° and 40° slanting angles. The increased in slanting angle caused higher stress at the restored lesion and the loading angle was more effective factor for reducing the stresses than the loading position. This means that changing the biting force direction of a patient with non-carious cervical lesions is recommended for enhancing durability of the restoration.
우성관(S. G. Woo),김광훈(G. H. Kim),손권(K. Son),박정길(J. K. Park) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
Occlusal loading is considered as the main factor of noncarious cervical lesions. The goal of this study is to identify stress distribution using three dimensional finite element analysis, when occlusal loading is applied on the cervical resion of human tooth. A finite element model was constructed from micro-CT image and three kinds of static force(500 N) were assumed. In all cases stress concentrates on the same area in the cement-enamel junction. This finding is consistent with published experimental results.