파절된 도재면에 대한 수종의 도재 수리 시스템의 인장결합강도
Tensile bond strength of four porcelain repair systems
전영아, 양병덕, 박주미, 송광엽, 이호진,
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전영아 ( Jeon Young-A ) - 전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소
양병덕 ( Yang Byung-Deok ) - 전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소
박주미 ( Park Ju-Mi ) - 전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소
송광엽 ( Song Kwang-Yeob ) - 전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소
이호진 ( Lee Ho-Jin ) - 전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소
KMID : 0362420050430020149
Abstract
Statement of problem: Dental ceramics exhibit excellent esthetic property, compressive strength, chemical durability, biocompatibility and translucency. However, it suffers from inherent brittle fractures. Various techniques and materials for intraoral porcelain repair has been suggested.
Purpose: This study is to compare the tensile bond strength of four commonly used porcelain repair systems (Vivadent, Bisco, Ultradent, Voco) and to insure the best system for the clinical application to the fractured porcelain.
Materials & Methods: A total of fifty specimens were fabricated. Specimens were stored in 37degrees C distilled water for 7 days and thermocycling was performed(1000 cycles), and subjected to a tensile force parallel to the repair resin and porcelain interface by use of an Universal Testing Machine.
Results: 1. Voco showed the highest tensile bond strength. In decreasing order, the tensile bond strength of the other materials was as follows : Ultradent, Bisco, Vivadent. 2. There was a statistically significant difference between the porcelain repair systems(Voco, Ultradent > Bisco, Vivadent) (p<0.05). 3. SEM examination of prepared porcelain surfaces revealed that the surface treated with Voco showed brittle fracture. However, Ultradent, Bisco and Vivadent showed ductile fracture. 4. All specimens treated with four porcelain repair systems showed adhesive failure between porcelain and composite resin.
키워드
Tensile bond strength;porcelain repair system;Fracture
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