Bond strength durability of self-etching adhesives and resin cements to dentin
OBJECTIVES: To evaluate the microtensile bond strength (µTBS) of one- (Xeno III, Dentsply) and two-step (Tyrian-One Step Plus, Bisco) self-etching adhesive systems bonded to dentin and cemented to chemically cured (C&B Metabond) or light-cured paste of a dual-cure resin cement (Variolink II, Ivo...
| Authors: | , , , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2009 |
| Country: | Brasil |
| Institution: | Universidade de São Paulo (USP) |
| Repository: | Journal of applied oral science (Online) |
| Language: | English |
| OAI Identifier: | oai:revistas.usp.br:article/3664 |
| Online Access: | https://www.revistas.usp.br/jaos/article/view/3664 |
| Access Level: | Open access |
| Keyword: | Self-etching adhesives Resin cements Durability Bond strength Microtensile testing |
| Summary: | OBJECTIVES: To evaluate the microtensile bond strength (µTBS) of one- (Xeno III, Dentsply) and two-step (Tyrian-One Step Plus, Bisco) self-etching adhesive systems bonded to dentin and cemented to chemically cured (C&B Metabond) or light-cured paste of a dual-cure resin cement (Variolink II, Ivoclar) within a short (24 h) and long period of evaluation (90 days). MATERIAL AND METHODS: Forty recently extracted human molars had their roots removed and their occlusal dentin exposed and ground wet with 600-grit SiC paper. After application of one of the adhesives, the resin cement was applied to the bonded surface and a composite resin block was incrementally built up to a height of 5 mm (n=10). The restored teeth were stored in distilled water at 37ºC for 7 days. The teeth were then cut along two axes (x and y), producing beam-shaped specimens with 0.8 mm² cross-sectional area, which were subjected to µTBS testing at a crosshead speed of 0.05 mm/min and stressed to failure after 24 h or 90 days of storage in water. The µTBS data in MPa were subjected to three-way analysis of variance and Tukey's test (α= 0.05). RESULTS: The interaction effect for all three factors was statistically significant (three-way ANOVA, p |
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