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| Format: | Artículo científico |
| Language: | en |
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Universidade da Região de Joinville
2013
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| Online Access: | https://www.redalyc.org/articulo.oa?id=153028468008 |
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- Influence of different surface treatments on the shear bond strength of a methacrylate resin composite repaired with silorane-based resin Leonardo Fernandes da Cunha Bruno Moreno Nascimento Samantha Shaffer Pugsley Baratto Carla Castiglia Gonzaga Adilson Yoshio Furuse José Mondelli Odirlei Arruda Malaspina Medicina adhesives shear strength Composite resins Introduction: When repairs are needed in restorations made with methacrylate-based resin composites, the clinician still has doubts whether it is possible to use a silorane-based material and which is the best procedure. Objective: To evaluate the shear bond strength between a methacrylate-based resin composite and a silorane-based material using different surface treatments. Material and methods: Eighty flat bases made with methacrylate resin composite (Filtek Z350 XT) were prepared (n = 8). The bases were stored into water at 37°C for one week. Ten groups were evaluated: G1 (control – no repair); G2 (surface grinding, washing, drying, adhesive and repair with Filtek Z350 XT); G3 (surface grinding, washing, drying, adhesive and repair with silorane – Filtek P90); G4 (surface grinding, washing, drying, adhesive, silane and repair with Filtek Z350 XT); G5 (surface grinding, washing, drying, application of silane, adhesive and repair with silorane – Filtek P90). All groups were kept at 37°C for 24 hin either water (G1 to G5) or ethanol (G6 to G10). The results were analyzed with one-way ANOVA and Tukey test ( α = 0.05). Results: There were significant differences between groups (p < 0.001). Only repairs made with silane and Z350 XT (G4 = 46.2 ± 12.9; G9 = 48.1 ± 16.3) resulted in values similar to controls (G1 = 59.2 ± 15.8; G6 = 62.3 ± 15.9) (p = 0.33). The smallest value occured when the repair was performed with silane and silorane-based based and stored into ethanol (G10 = 29.9 ± 12.4). The storage media had little influence on the results. Conclusion: The silorane-based resin composite was not effective for repair of the methacrylate- based material. 2013 artículo científico 1806-7727 https://www.redalyc.org/articulo.oa?id=153028468008 en http://www.redalyc.org/revista.oa?id=1530 RSBO Revista Sul-Brasileira de Odontologia application/pdf Universidade da Região de Joinville RSBO Revista Sul-Brasileira de Odontologia (Brasil) Num.3 Vol.10