COMPARATIVE STUDY OF SHEAR BOND STRENGTH BETWEEN CP-TI/CO-CR ALLOY AND COMPOSITE RESINS
윤세희, 이석형, Pae Ahran, 이호림,
소속 상세정보
윤세희 ( Yoon Se-Hee ) - 이화여자대학교
이석형 ( Lee Seok-Hyeong ) - 성균관대학교 의과대학 삼성서울병원 보철과
( Pae Ahran ) - 이화여자대학교 임상치과대학
이호림 ( Lee Ho-Rim ) - 이화여자대학교
KMID : 0362420070450060805
Abstract
Statement of problem: Composite resin-veneered metal restorations can be used as an alternative to porcelain-fused-metal restorations. But, because of the relatively low bond strength of veneering composite to metal framework, various surface treatment methods have been introduced to improve the bond strength.
Purpose: The object of this study was to compare the shear bond strength of different combinations of each of the two bonding systems and each of the two composite veneering resins to cp-Ti/Co-Cr alloy.
Material and Methods : Two resin bonding systems (metal conditioner containing MEPS monomer, tribochemical silicoating system) and two composite resins (Gradia, Sinfony) were tested on cp-Ti and Co-Cr alloy. Then, according to manufacturers’ instructions, resin bonding systems and composite resins were applied. All test specimens were divided into four groups for each alloy; I) sandblast + Metal Primer II + Gradia (MG), II) sandblast + Metal Primer II + Sinfony (MS), III) Rocatec + Gradia (RG), IV) Rocatec + Sinfony (RS). The shear bond strength was determined using a universal testing machine and all data were statistically analyzed with Mann-Whitney test and Kruskal-Wallis test at the significance level of 0.05.
Results: The mean (standard deviations) of shear bond strength according to the combinations of two bonding systems and two composite resins to cp-Ti arranged from 16.44 MPa to 17.07 MPa and the shear bond strength to Co-Cr alloy ranged from 16.26 MPa to 17.70 MPa. The result shows that the difference were not statistically significant.
Conclusion: The shear bond strengths of composite resins to both cast cp-Ti and Co-Cr alloy were not significantly different between the metal conditioner and the tribochemical silicoating system. And no differences in bond strength were found between cp-Ti and Co-Cr alloy.
키워드
Shear bond strength;Composite resin veneered metal restorations;cp-Ti;Co-Cr alloy
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