Surface roughness, microhardness, and microleakage of a silorane-based composite resin after immediate or delayed finishing/polishing
Carregando...
Data
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Minas Gerais
Descrição
Tipo
Artigo de periódico
Título alternativo
Primeiro orientador
Membros da banca
Resumo
Objective. This study evaluated the effect of immediate or delayed finishing/polishing using different systems on the surface
roughness, hardness, and microleakage of a silorane-based composite. Material and Methods. Specimens were made with silorane based composite (Filtek P90, 3M ESPE) and assigned to the treatments: control (light-cured); aluminum oxide discs (Sof-Lex,
3M ESPE); diamond-impregnated silicone tips (Astropol, Ivoclar Vivadent); aluminum oxide-impregnated silicone tips (Enhance,
Dentsply). Half of the specimens were finished/polished immediately and the rest after 7 days. Surface roughness (Ra, 𝜇m; 𝑛 = 20)
and Vickers microhardness (50 g; 45 s; 𝑛 = 10) were measured. Cavities were prepared in bovine incisors and filled with Filtek
P90. The fillings received immediate or delayed finishing/polishing (𝑛 = 10) and were subjected to dye penetration test (0.5%
basic fuchsin, 24 h). Data were analyzed by ANOVA and Scheffe, Kruskal-Wallis, and Mann-Whitney tests (𝑝 < 0.05). Results.
The finishing/polishing system significantly influenced roughness and microhardness (𝑝 < 0.0001). For enamel, microleakage
was not affected by the finishing/polishing system (𝑝 = 0.309). For dentin, Sof-Lex discs and Astropol points promoted greater
microleakage than Enhance points (𝑝 = 0.033). Conclusion. Considering roughness, microhardness, and microleakage together,
immediate finishing/polishing of a silorane-based composite using aluminum oxide discs may be recommended
Abstract
Assunto
Dental polishing, Evaluation study, Hardness, Dental Leakage
Palavras-chave
Citação
Curso
Endereço externo
http://www.hindawi.com/journals/ijd/2016/8346782/