Surface Roughness and SEM Analysis of Three Veneering Resin Composites Polished With a New System

*3040 Surface Roughness and SEM Analysis of Three Veneering Resin Composites Polished With a New System*
L.Þ. TÜRKÜN, and M. TÜRKÜN, Ege University School of Dentistry, Izmir, Turkey Objectives: The aims of this study were:1) to analyze the surface roughness of three veneering resin composite polished with a new one step and two conventional polishing systems 2) to evaluate their effectiveness and surface damage by a SEM analysis. Methods: The resin composites evaluated were Clearfil ST (Kuraray), Filtek A110 (3M/ESPE) and Esthet-X (Dentsply/ Caulk).The polishing systems tested were Sof-Lex discs (3M/ESPE), Enhance system (Dentsply/Caulk) and Pogo a diamond-coated polisher (Dentsply/Caulk). Seventy-two discs of 10x2mm were cured 60s through a Mylar strip. For each resin composite, six discs/polishing systems were prepared. The Mylar-created surfaces were evaluated with a surfometer to obtain baseline values. Sof-Lex discs were each used 30s. Enhance discs were used 30s and Prisma Gloss polishing pastes were applied 30s. Pogo discs were applied only 30s.The surface roughness was evaluated with a surfanalyse (Taylor Hobson Ltd Surtronic 4, Denmark). Representative samples of finishing procedures were selected for SEM analysis for visualization of the surfaces morphography. Statistical differences were checked by analysis of variance (p<0.05). Results: The surface roughnesses of all materials against Mylar strips were not different. The surfaces of Clearfil ST and Esthet-X polished with PoGo and the Mylar group were not different. Among all the polishing systems tested, PoGo exhibited the smoother finish for all materials. Enhance system and Prisma Gloss polishing paste exhibited highest roughness for Filtek A110 and Clearfil ST. There was no difference between Filtek A110, Esthet-X and Clearfil ST polished with Solf-Lex, and Filtek A110 polished with PoGo. The Filtek A110 and Clearfil ST samples polished with Enhance system were significantly rougher than the Esthet-X (p<0.05). Conclusions: Further study is needed to determine if the reduced step finishing of PoGo can be suitable for clinical situations where access is limited and surfaces are not flat. The manufacturers had supplied the materials.
Seq #308 - Color of Restorative Materials, Bleaching 3:45 PM-5:45 PM, Saturday, 28 June 2003 Svenska Massan G3
Back to the Dental Materials: VIII - Others-Non-metallic Program Back to the 81st General Session of the International Association for Dental Research (June 25-28, 2003)
Top Level Search