Surface roughness and hardness of a composite resin: influence of finishing and polishing and immersion methods
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Data
2010-07-01
Autores
Oliveira, Ana Luisa Botta Martins de [UNESP]
Garcia, Patricia Petromilli Nordi Sasso [UNESP]
Santos, Patricia Aleixo dos
Campos, Juliana Alvares Duarte Bonini [UNESP]
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Editor
Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials
Resumo
This study evaluated the finishing and polishing effect on the surface roughness and hardness of the Filtek Supreme XT, in fluoride solutions. Specimens were prepared (n = 140) with half of the samples finished and polished with Super-Snap (R) disks. The experimental groups were divided according to the presence or absence of finishing and polishing and immersion solutions (artificial saliva, sodium fluoride solution at 0.05%-manipulated, Fluordent Reach, Oral B, Fluorgard). The specimens remained immersed in artificial saliva for 24 hours and were then subjected to initial analysis (baseline) of surface roughness and Vickers microhardness. Next, they were immersed in different fluoride solutions for 1 min/day, for 60 days. Afterwards, a new surface roughness and microhardness reading was conducted. The data were submitted to a two-way ANOVA and Tukey's test (5% significance level). For the comparison of mean roughness and hardness at baseline and after 60 days, the paired Student t test was used. The results showed that the surface roughness and microhardness of the Filtek Supreme XT were influenced by the finishing and polishing procedure, independently of the immersion methods.
Descrição
Palavras-chave
dental polishing, fluorine, composite resins
Como citar
Materials Research-ibero-american Journal of Materials. São Carlos: Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials, v. 13, n. 3, p. 409-415, 2010.