Journal
JOURNAL OF ORAL SCIENCE
Volume 61, Issue 1, Pages 125-132Publisher
NIHON UNIV, SCHOOL DENTISTRY
DOI: 10.2334/josnusd.17-0466
Keywords
fluoride mouthrinse; bovine root dentin; one-step self-etching adhesive; mu TBS; ABRZ
Funding
- Japan Society for the Promotion of Sciences [15K11105, 16H05515]
- Grants-in-Aid for Scientific Research [15K11105] Funding Source: KAKEN
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This study investigated the effect of fluoride mouthrinses on bonding of a one-step self-etch adhesive to bovine root dentin. Application of a NaF solution (0, 450, 900, or 9,000 ppm) to bovine root dentin surfaces was performed for 30 s (immediate) or before bonding of an all-in-one adhesive. Micro-tensile bond strength (mu TBS) testing and scanning electron microscopic (SEM) observation of the acidbase resistance zone (ABRZ) were performed. mu TBS values and calculated ABRZ areas were analyzed by using two-way ANOVA and the t-test with Bonferroni correction. The significance level was set at P = 0.05 (n = 30). Fracture mode was analyzed with the Mann-Whitney U test with Bonferroni correction. The significance level set at P = 0.00178 (n = 30). mu TBS did not significantly differ between the control, 450 ppm F, and 900 ppm F specimens (P> 0.05) but was significantly lower in 9,000 ppm F specimens (P < 0.05). SEM showed a significant increase in acid resistance at the adhesive-dentin interface, including the ABRZ, after fluoride application.
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