Abstract

POPOFF, Daniela Araújo Veloso et al. Silorane-based composite as repair material: a six-month randomized clinical trial. RGO, Rev. gaúch. odontol. (Online) [online]. 2013, vol.61, n.4, pp. 557-563. ISSN 1981-8637.

Objective This study investigated the clinical performance of a silorane-based composite resin when used for repairing conventional composite restorations. Methods Defective dimethacrylate-based composite resin restorations were randomly assigned to one of two treatment groups: Control group - Adper SE Plus + Filtek P60 (3M/ESPE, St. Paul, EUA) and Test Group - P90 Adhesive System + Filtek P90 (3M/ESPE, St. Paul, EUA). All repaired restorations were evaluated at baseline, and at six-month recall. The parameters examined were marginal adaptation, anatomic form, surface roughness, marginal discoloration, post-operative sensitivity and secondary caries. The restorations were classified according to modified USPHS criteria. Mann-Whitney and Wilcoxon tests were used to compare the groups. Results Of the 100 restorations repaired in this study, 93 were reexamined at baseline and 91 at 6-month recall. Drop-out was about 9%. No statistically significant differences were found between the materials for all clinical criteria, at baseline and at 6-month recall (p > 0.05). No statistically significant differences were registered (p > 0.05) for each material when compared for all clinical criteria, at baseline and at 6-month recall. The hypothesis tested in this randomized controlled clinical trial was accepted. Conclusion After the six-month evaluations, silorane-based composite exhibit a similar performance compared to dimethacrylate-based composite when used as repair material.

Keywords : Composite resins.; Corrective maintenance.; Dental restoration repair.; Silorane resins..