Evaluating resin-enamel bonds by microshear and microtensile bond strength tests: effects of composite resin |
| |
Authors: | Andrade Andrea Mello de Moura Sandra Kiss Reis Alessandra Loguercio Alessandro Dourado Garcia Eugenio Jose Grande Rosa Helena Miranda |
| |
Institution: | Dental School, Department of Dental Materials, University of S?o Paulo, S?o Paulo, SP, Brazil. |
| |
Abstract: | ObjectivesThe aims of this study were to evaluate the effect of resin composite (Filtek Z250
and Filtek Flow Z350) and adhesive system (Solobond Plus, Futurabond NR (VOCO)
and Adper Single Bond (3M ESPE)] on the microtensile (µTBS) and microshear bond
strength (µSBS) tests on enamel, and to correlate the bond strength means between
them. Material and methodsThirty-six extracted human molars were sectioned to obtain two tooth halves: one
for µTBS and the other one for µSBS. Adhesive systems and resin composites were
applied to the enamel ground surfaces and light-cured. After storage (37ºC/24 h)
specimens were stressed (0.5 mm/ min). Fracture modes were analyzed under scanning
electron microscopy. The data were analyzed using two-way ANOVA and Tukey''s test
(α=0.05). ResultsThe correlation between tests was estimated with Pearson''s product-moment
correlation statistics (α =0.05). For both tests only the main factor resin
composite was statistically significant (p<0.05). The correlation test detected
a positive (r=0.91) and significant (p=0.01) correlation between the tests. ConclusionsThe results were more influenced by the resin type than by the adhesives. Both
microbond tests seem to be positive and linearly correlated and can therefore lead
to similar conclusions. |
| |
Keywords: | Enamel Adhesives Resins |
本文献已被 PubMed 等数据库收录! |
|