코발트-크롬 합금의 표면처리에 따른 열중합형 의치상용 레진과의 전단결합강도
SHEAR BOND STRENGTH OF HEAT-CURED DENTURE BASE RESIN TO SURFACE TREATED CO-CR ALLOY WITH DIFFERENT METHODS
이상훈, 이근우, 심준성, 황선홍, 문홍석,
소속 상세정보
이상훈 ( Lee Sang-Hoon ) - 연세대학교 치과대학 치과보철학교실
이근우 ( Lee Keun-Woo ) - 연세대학교 치과대학 치과보철학교실
심준성 ( Shim June-Sung ) - 연세대학교 치과대학 치과보철학교실
황선홍 ( Hwang Sun-Hong ) - 연세대학교 치과대학 치과보철학교실
문홍석 ( Moon Hong-Seok ) - 연세대학교 치과대학 치과보철학교실
KMID : 0362420070450020216
Abstract
Statement of problem: For the long-term success of removable partial dentures, the bonding between metal framework and denture base resin is one of the important factors. To improve bonding between those, macro-mechanical retentive form that is included metal framework design has been generally used. However it has been known that sealing at the interface between metal framework and denture base resin is very weak, because this method uses mechanical bonding.
Purpose: Many studies has been made to find a simple method which induces chemical bond, now various bonding system is applied to clinic. In this experiment, shear bond strengths of heat-cured denture base resin to the surface-treated Co-Cr alloy were measured before and after thermocycling. Chemically treated groups with Alloy Primer^{TM}, Super-Bond C&B^{TM}, and tribochemically treated group with Rocatec^{TM} system were compared to the beadtreated control group. The data were analyzed with two-way ANOVA.
Result: 1. Shear bond strength of bead-treated group is highest, and Alloy Primer^{TM} treated group, Super-Bond C&B^{TM} treated group, RocatecTM system treated group were followed. Statistically significant differences were found in each treated group(p<0.05). 2. Surface treatment and thermocycling affected shear bond strength(p<0.05), however there was no interaction between two factors(p>0.05). 3. Shear bond strengths of bead-treated group and Alloy Primer^{TM} treated group showed no statistically significant difference before and after thermocycling(p>0.05), and those of Super-Bond C&B^{TM} treated group and Rocatec^{TM} system treated group showed statistically significant difference after thermocycling(p<0.05).
키워드
Denture base resin;Co-Cr alloy;Metal surface treatment;Shear bond strength
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