| 1264 In vitro evaluation of the surface roughness of three amalgam alloys through angular correlation of speckle method | ||
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C.M.C. ALVES1, M. MORI1, E. MATSON1, M. MURAMATSU2, and R.D. PAIVA JR2, 1University of São Paulo - School of Dentistry, São Luis - MARANHÃO, Brazil, 2Physics Institute - University of São Paulo, São Paulo - SP, Brazil Objectives:The purpose of this study was to evaluate surface roughness of three different amalgam alloys “ïn vitro”, through angular correlation of “speckle” method. Methods: Samples were prepared on acriylic plate with Permite C, Dipersalloy and GS80 alloys. The samples received the following surface treatments: burnishing; burnishing and polishing with pumice; burnishing and polishing with Amalgloss. Statistical analisys with a significance level of 1% was performed. This method uses laser beam (HE-NE). Results: The results showed that the surface roughness of amalgam alloys were P(3,61), D(3,90).and G(4,09) and there were no statistically significant differences among them. After treatments, surface roughness were B(5,22), BP(2,94) and BA(3,45) and there were statistically significant differences among the surface tretaments used. Conclusions: In conclusion, the type of amalgam alloys did not influence the surface roughness, but the surface tretaments are able to change the surface roughness of amalgam restorations. | ||
| Seq #124 - Surface Roughness and Color of Restorative Materials 3:45 PM-5:00 PM, Thursday, 7 March 2002 San Diego Convention Center Exhibit Hall C | ||
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