Surface roughness and hardness of a composite resin: influence of finishing and polishing and immersion methods

Materials Research

Ana Luísa Botta Martins De Oliveira²  Patrícia Petromilli Nordi Sasso Garcia¹  Patrícia Aleixo Dos Santos¹  Juliana Álvares Duarte Bonini Campos¹ 

[1] ,São Paulo State University Araraquara School of Dentistry Department of Children's DentistrySão Carlos SP ,Brazil

关键词: dental polishing;    fluorine;    composite resins;   

DOI  :  10.1590/S1516-14392010000300021

来源: SciELO

【 摘 要 】

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® 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.

【 授权许可】

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