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Does use of silane-containing universal adhesive eliminate the need for silane application in direct composite repair?
- Source :
- Brazilian Oral Research; 2020, Vol. 34, p1-7, 7p
- Publication Year :
- 2020
-
Abstract
- This in vitro study aimed to evaluate the effect of a silane-containing universal adhesive used with or without a silane agent on the repair bond strength between aged and new composites. Forty nanohybrid composite resin blocks were stored in distilled water for 14 d and thermo-cycled. Sandpaper ground, etched, and rinsed speciments were randomly assigned into four experimental groups: silane + two-step etch-and-rinse adhesive system, two-step etch-and-rinse adhesive system, silane + silane-containing universal adhesive system, and silane-containing universal adhesive system. Blocks were repaired using the same composite. After 24 h of water storage, the blocks were sectioned and bonded sticks were submitted to microtensile testing. Ten unaged, non-repaired composite blocks were used as a reference group to evaluate the cohesive strength of the composite. Two-way ANOVA and Tukey's tests were used to analyze average µTBS. One-way ANOVA and Dunnet post-hoc tests were used to compare the cohesive strength values and bond strength obtained in the repaired groups (_ = 0.05). The µTBS values were higher for the silane-containing universal adhesive compared to the two-step etch-and-rinse adhesive system (p = 0.002). Silane application improved the repair bond strength (p = 0.03). The repair bond strength ranged from 39.3 to 65.8% of the cohesive strength of the reference group. Using universal silane-containing adhesive improved the repair bond strength of composite resin compared to two-step etch-and-rinse adhesive. However, it still required prior application of a silane agent for best direct composite resin repair outcomes. [ABSTRACT FROM AUTHOR]
- Subjects :
- ADHESIVES
SILANE
TUKEY'S test
BOND strengths
TWO-way analysis of variance
Subjects
Details
- Language :
- English
- ISSN :
- 18068324
- Volume :
- 34
- Database :
- Supplemental Index
- Journal :
- Brazilian Oral Research
- Publication Type :
- Academic Journal
- Accession number :
- 151602553
- Full Text :
- https://doi.org/10.1590/1807-3107bor-2020.vol34.0045