Dental Materials Journal
Online ISSN : 1881-1361
Print ISSN : 0287-4547
Original Paper
Effect of various dimethyl sulfoxide concentrations on the durability of dentin bonding and hybrid layer quality
Anas Aaqel SALIM Al-AniMurat MUTLUAYThiago Henrique Scarabello STAPELeo TJÄDERHANEArzu TEZVERGIL- MUTLUAY
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2018 Volume 37 Issue 3 Pages 501-505

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Abstract

The objective was to evaluate effect of dimethyl sulfoxide (DMSO) on microtensile bond strength (µTBS) and nanoleakage (NL). Superficial dentin was acid-etched and pretreated with DMSO. Etch-and-rinse adhesive was applied and restored with resin composite incrementally. After 24 h, teeth were sectioned, stored in artificial saliva for 24-h or 6-months before µTBS evaluation. Failure modes were examined. Six beams per group were submitted to nanoleakage evaluation using SEM. Data were analyzed using ANOVA and Tukey’s test (α=0.05). Pretreatment had no significant effect on µTBS after 24 h (p>0.05). After 6 months storage, µTBS of control decreased significantly, more than with the groups treated with 0.01% or higher (p<0.05). DMSO-pretreated groups preserved µTBS in all groups. After 6-months, all groups except 0.001% showed significantly lower nanoleakege compared to control (p<0.05). DMSO (0.01–20%) may improve the hybrid layer integrity and bonding durability. The best results were seen with low (1–5%) of DMSO concentrations.

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© 2018 The Japanese Society for Dental Materials and Devices
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