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Two-year clinical performance of dimethacrylatebased composite restorations repaired with a silorane-based composite
The Journal of Adhesive Dentistry
|December 18, 2014
Summary
Silorane-based composite resins demonstrated comparable clinical performance to dimethacrylate-based composites in repairing existing restorations over two years. Marginal discoloration was noted in silorane restorations but did not significantly impact overall outcomes.
Area of Science:
- Restorative Dentistry
- Dental Materials Science
Background:
- Dimethacrylate-based composite resins are widely used in dental restorations.
- Silorane-based composites offer an alternative material with potentially different properties.
- Evaluating the clinical performance of new materials for repairing existing restorations is crucial.
Purpose of the Study:
- To compare the two-year clinical performance of a silorane-based composite resin versus a dimethacrylate-based composite resin when used for repairing defective restorations.
- To assess specific clinical parameters including marginal adaptation, form, surface, discoloration, sensitivity, and secondary caries.
Main Methods:
- A randomized clinical trial involved repairing 100 defective restorations, with 50 in each group (silorane-based vs. dimethacrylate-based).
- Clinical evaluations were conducted by calibrated examiners at baseline, 6 months, 1 year, and 2 years using modified US Public Health Service criteria.
- Statistical analysis included Friedman's ANOVA, Mann-Whitney, and Wilcoxon tests to compare groups and changes over time.
Main Results:
- After two years, 79 restorations were re-examined.
- No statistically significant differences in overall clinical performance were observed between the silorane-based and dimethacrylate-based composites at baseline or the 2-year recall.
- A statistically significant increase in marginal discoloration was observed for the silorane-based composite restorations from baseline to the 2-year recall (p=0.029).
Conclusions:
- The silorane-based composite resin exhibited similar clinical performance to the dimethacrylate-based composite resin for repairing existing restorations over a two-year period.
- While marginal discoloration was noted in silorane restorations, it did not lead to statistically significant differences in overall clinical outcomes compared to the control group.
