A comparative study of marginal microleakage using different cements in porcelain-fused-to-metal crown
Jiang, M.-X.; Huang, K.-Q.; Li, Z.-G.; Gao, X.-Q.; Li, C.-S.
Hua Xi Kou Qiang Yi Xue Za Zhi 29(2): 168-170
2011
ISSN/ISBN: 1000-1182 PMID: 21598490 Document Number: 651106
To evaluate the marginal microleakage of porcelain-fused-to-metal crown using four different cements. Sixteen porcelain-fused-to-metal crowns were built and randomly divided into 4 group, luted onto standard prepared human forward molars using four different cements (glass ionomer cement, resin-modified glass ionomer cement, PanaviaF, Super-Bond C&B adhesive luting system). After temperature cycling test, all the crowns were then submerged in 2% fuchsin for 24 h. The marginal microleakage at tooth cement interfaces was observed using light stereomicroscopy and evaluated in classification index. The marginal microleakage grade of 4 groups were analyzed by SPSS 13.0. The PanaviaF demonstrated the least marginal microleakage, Super-Bond C&B adhesive luting system, resin-modified glass ionomer cement showed an intermediate level of marginal microleakage, glass ionomer cement was associated with severe marginal microleakage (total, Chi2 = 157.60, P < 0.01; among the different groups, P<0.05). Adhesive resin luting system which is the first selection in clinical is better than glass ionomer cement and is good at porcelain-fused-to-metal crown.