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https://hdl.handle.net/10316/107310
Título: | Polymerization Shrinkage Evaluation of Restorative Resin-Based Composites Using Fiber Bragg Grating Sensors | Autor: | Lins, Rodrigo Vinagre, Alexandra Alberto, Nélia Domingues, Maria F. Messias, Ana Martins, Luís R. Nogueira, Rogério Ramos, João C. |
Palavras-chave: | resin based-composites; bulk-fill composite resins; light curing; polymerization shrinkage; optical fiber sensors; fiber Bragg gratings | Data: | 11-Mai-2019 | Editora: | MDPI | Projeto: | UID/EEA/50008/2018 | Título da revista, periódico, livro ou evento: | Polymers | Volume: | 11 | Número: | 5 | Resumo: | The purpose of this study was to compare the linear polymerization shrinkage of different restorative resin-based composites (RBCs) using fiber Bragg grating (FBG) sensors. Five RBCs were evaluated: Zirconfill® (ZFL); Aura Bulk-Fill (ABF); Tetric® N-Ceram Bulk-Fill (TBF); FiltekTM Bulk-Fill (FBF); and Admira Fusion-Ormocer® (ADF). Ten samples per resin were produced in standardized custom-made half-gutter silicone molds. Two optical FBG sensors were used to assess temperature and polymerization shrinkage. Light curing was performed for 40 s and polymerization shrinkage was evaluated at 5, 10, 40, 60, 150, and 300 s. Statistical analysis was accomplished for normal distribution (Shapiro-Wilk, p > 0.05). Two-way repeated measures ANOVA with Greenhouse-Geisser correction followed by Bonferroni's post-hoc test was used to analyze the linear shrinkage data (p < 0.05). ZFL showed the highest linear shrinkage and ADF the lowest. Shrinkage increased for all RBCs until 300 s, where significant differences were found between ADF and all other resins (p < 0.05). Among bulk-fill RBCs, TBF showed the lowest shrinkage value, but not statistically different from FBF. The ADF presented lower linear shrinkage than all other RBCs, and restorative bulk-fill composites exhibited an intermediate behavior. | URI: | https://hdl.handle.net/10316/107310 | ISSN: | 2073-4360 | DOI: | 10.3390/polym11050859 | Direitos: | openAccess |
Aparece nas coleções: | FMUC Med. Dentária - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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Polymerization-shrinkage-evaluation-of-restorative-resinbased-composites-using-fiber-Bragg-grating-sensorsPolymers.pdf | 1.17 MB | Adobe PDF | Ver/Abrir |
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