Analysis of Roughness and Surface Hardness of a Dental Composite Using Atomic Force Microscopy and Microhardness Testing
| Autor: | José Ivo Limeira dos Reis, José Ginaldo da Silva Júnior, Josealdo Tonholo, Aline Barbirato Fardin, Marcos Aurélio Bomfim da Silva, Renata Carvalho Cabral de Vasconcellos, Lucineide de Melo Santos |
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| Rok vydání: | 2011 |
| Předmět: |
Dental composite
Materials science Surface Properties Polyurethanes Acrylic Resins Carbonated Beverages Surface finish Nanoindentation Microscopy Atomic Force Coffee Composite Resins Indentation hardness Hardness Animal science visual_art Immersion (virtual reality) Surface roughness visual_art.visual_art_medium Animals Cattle Instrumentation Acrylic resin |
| Zdroj: | Microscopy and Microanalysis. 17:446-451 |
| ISSN: | 1435-8115 1431-9276 |
| DOI: | 10.1017/s1431927611000250 |
| Popis: | The objective of this study was to evaluate the influence of a cola soft drink (CSD) and coffee on the microhardness and surface roughness of composite resin. Fifty cavities were prepared on the vestibular surface of bovine incisors and restored with nanoparticulate resin. The teeth were divided into five groups (n= 10): group A (control), immersion in artificial saliva (AS) for 14 days; group B, immersion in coffee for 15 min (3×/day) for 7 days followed by immersion in AS for another 7 days; group C, immersion in CSD for 15 min (3×/day) for 7 days followed by immersion in AS for another 7 days; group D, immersion in AS for 7 days, immersion in coffee for 15 min (3×/day) for 7 days; group E, immersion in AS for 7 days, immersion in CSD for 15 min (3×/day) for 7 days. After the immersion periods the specimens were analyzed for their microhardness and surface roughness. The data were subjected to analysis of variance (ANOVA) followed byt-test with 5% significance. Group A presented the highest average microhardness and lowest surface roughness, so it was possible to conclude that the consumption of CSD and coffee alters the microhardness and surface roughness of new restorations. |
| Databáze: | OpenAIRE |
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