Effect of non-vital bleaching on the durability of resin-dentin bond with an ethanol-based etch-and-rinse adhesive

Boruziniat, A. and Atoufi, A. and Chehreli, Z. and Akbari, M. and Gifani, M. (2018) Effect of non-vital bleaching on the durability of resin-dentin bond with an ethanol-based etch-and-rinse adhesive. Biomimetics, 3 (4).

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Abstract

To evaluate the bleaching procedure and application of sodium ascorbate on dentin bond durability, the enamel surface of intact human third molars (n = 18) were removed, and the teeth were randomly divided into two groups for immediate and six-month bond strength evaluation. The specimens were further assigned into three subgroups according to treatment procedure, as follows: subgroup A, no bleaching (positive control) was performed prior to the etch-and-rinse bonding with single bond and subsequent build-up with Z250 composite; subgroup B, the samples were bleached with 20 carbamide peroxide 6 h/day for five consecutive days prior to bonding; and subgroup C, bleaching was performed as in subgroup B, after which 10 sodium ascorbate was applied on dentin surface for 10 min before the bonding procedures. A microtensile bond strength test was performed and the failure modes were evaluated under a stereomicroscope. The data were analyzed using two-way analysis of variance (ANOVA) and Tukey's post-hoc tests with a level of significance of 0.05. Bleaching significantly decreased the immediate and six-month bond strength. The application of sodium ascorbate had no significant effect on the immediate and six-month bond strength of bleached specimens. We conclude that the bleaching procedure may decrease the durability of the resin-dentin bond of the tested etch-and-rinse adhesive. © 2018 by the authors.

Item Type: Article
Additional Information: Cited By :1 Export Date: 16 February 2020 Correspondence Address: Atoufi, A.; Dental Research Center, Mashhad University of Medical Sciences, P.O. Box 9177948959, Iran; email: Atefehatoufi5@gmail.com
Uncontrolled Keywords: Dentin bonding agent Matrix metalloproteinases Sodium ascorbate Teeth bleaching
Subjects: WU Dentistry. Oral surgery
Divisions: Mashhad University of Medical Sciences
Depositing User: lib2 lib2 lib2
Date Deposited: 26 May 2020 03:24
Last Modified: 26 May 2020 03:24
URI: http://eprints.mums.ac.ir/id/eprint/17242

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