근관 치료 후 수복 방법이 파절 강도와 파절 양상에 미치는 영향
The Effect of Restorative Method on Fracture Strength and Fracture Pattern in Endodontically Treated Teeth
안동국, 신수연, 조인호,
소속 상세정보
안동국 ( ) - 단국대학교
신수연 ( Shin Soo-Yeon ) - 단국대학교 치과대학 치과보철학교실
조인호 ( Cho In-Ho ) - 한국체육대학교
KMID : 0988720050210020133
Abstract
The purpose of this study was to evaluate interaction of restorative method according to amount of remaining clinical crown length. For the study, sixty healthy mandibular premolars with no dental caries were chosen. Specimens with clinical crown length of 1 mm, 2 mm, 3 mm above the cemento-enamel junction(CEJ) were prepared and root canal treatment was conducted using Ni-Ti rotaty files. Thirty specimens were restored with LuxaCoreⓡ and thirty were restored with casting posts. All specimens were restored with full coverage crowns and the fracture strength was teseted with the MTS universal testing marchine. The fracture pattern was observed by measuring the distance between CEJ and fracture line. From the results above, the fracture strength seems to be influenced more by amount of remaining clinical crown length than restorative method. Good prognosis could be expected, when more than 2mm of clinical crown length is retained. In the future, the further studies on restorative method, to increase fracture strength of teeth will be necessary.
키워드
clinical crown length;casting post;fracture strength
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