Bonding Effectiveness of Silorane-Based Composite to Dentine
Objectives: This study was carried out to evaluate the nanoleakage, hybrid layer, resin tags and micro-tensile bond strength (μ-TBS) of Silorane-based composite (Filtek Silorane/Silorane Bond; SL) that were compared to two low-shrinkage methacrylate-based composites (Premise/ OptiBond Solo Plus; PR and Aelite LS/One-Step Plus; AL). A mehacrylate based composite (Filtek Z250/Adper Single bond Plus; Z) was used as a comparative control.
Materials and Methods: μ-TBS to occlusal flat deep dentin was measured according to a standardized protocol and failed specimens were examined under SEM for Fractographic Analysis. Standardized class V cavities were prepared in extracted molar teeth with the cervical margin in cementum, teeth were sectioned longitudinally to obtain two slabs for either Nanoleakage analysis or morphological analysis of bonded interface of demineralized deproteinized specimens. examination was done using SEM. Results were analyzed by Two-way ANOVA and Tukey’s multiple range test was employed at a significance level of P< 0.05. The micro-tensile bond strength were further analyzed by Weibull survival analysis.
Results: SIL showed minimal nanoleakage in comparison to PR, AL and Z, while PR and Z showed superior infiltration to demineralized dentin. Silorane showed μ-TBS of 21.61±7.9 that was significantly different than PR and Z and an m-value of 8.8. No significant difference was found between all other tested materials; PR showed μ-TBS of 31.41±6.4 with m-value of 8.5, AL adhesive demonstrated bond strength of 27.36±7.1 with m-value of 5.8, and Z showed a strength value of 32.53±8.1 with an m value of 7.8
Conclusion: Silorane restorative system manifested minimal leakage and satisfactory bond strength compared to other resin-based restoratives.
|Journal||Egyptian Dental Journal|