Thermocycling이 금속과 레진시멘트간의 결합강도에 미치는 영향
The effect of thermocycling on bond strength between metal and resin ement
강건구, 정관호, 최정호, 안승근, 송광엽, 박찬운,
소속 상세정보
강건구 ( Kang Geon-Gu ) - 전북대학교 치과대학 치과보철학교실
정관호 ( Jeong Gwan-Ho ) - 전북대학교 치과대학 치과보철학교실
최정호 ( Choi Jeong-Ho ) - 전북대학교 치과대학 치과보철학교실
안승근 ( Ahn Seung-Geun ) - 전북대학교 치과대학 치과보철학교실
송광엽 ( Song Kwang-Yeob ) - 전북대학교 치과대학 치과보철학교실
박찬운 ( Park Charn-Woon ) - 전북대학교 치과대학 치과보철학교실
KMID : 0362419960340020233
Abstract
The purpose of this study was to evaluate the effect of thermocycling on bond strength between metal and resin cement according to thermocycling, and to observe the bond failure modes with optical microscope(X30). For this purpose, Super-Bond C & B and Panavia 21 resin cement were used. Metal specimens were made of Vera-Bond and the surface of specimens were sandblasted with 50㎛ aluminum oxide. All experimental groups were stored in 37℃ distilled water for 72 hours, followed by thermocycling between 5℃ and 55℃ with 15 second dwell time. 500, 1000, 2000 cycles of thermocycling were executed and the tensile bond strength was measured by Instron Universal Testing Machine(Model 4201) The obtained results were as follows : 1. Super-Bond C & B and Panavia 21 did not show statistically significant difference accor-ding to thermocycling test(P>0.05). 2. Super-Bond C & B specimens exhibited statistically significant higher tensile bond stre-ngth than Panavia 21 for all experimental groups(P<0.05). 3. Super-Bond C & B exhibited mixed mode failure with partial adhesive and partial cohe-sive failure, and most of Panavia 21 exhibited cohesive failure and some mixed mode failure
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