Surface Roughness, Microhardness, and Microleakage of a Silorane-Based Composite Resin after Immediate or Delayed Finishing/Polishing
| Autor: | Fernanda Carvalho Rezende Lins, Carolina Nemesio de Barros Pereira, Rodrigo Richard da Silveira, Allyson Nogueira Moreira, Raquel Conceição Ferreira, Cláudia Silami de Magalhães |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Article Subject Composite number Dentistry Polishing 02 engineering and technology Surface finish Indentation hardness Evaluation study 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Silicone Hardness Dentin medicine Surface roughness Composite material Dental polishing General Dentistry Dental Leakage Enamel paint business.industry 030206 dentistry 021001 nanoscience & nanotechnology lcsh:RK1-715 medicine.anatomical_structure chemistry lcsh:Dentistry visual_art visual_art.visual_art_medium 0210 nano-technology business Research Article |
| Zdroj: | International Journal of Dentistry International Journal of Dentistry, Vol 2016 (2016) Repositório Institucional da UFMG Universidade Federal de Minas Gerais (UFMG) instacron:UFMG |
| ISSN: | 1687-8736 1687-8728 |
| DOI: | 10.1155/2016/8346782 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text