TODENTJ-25-03-2019_TODENTJ-6-189 1553505401 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 12 14 2012 6 1 BACKGROUND AND AIMS Polishing may increase the surface roughness of composites, with a possible effect on bacterial growth and material properties. This preliminary in vitro study evaluates the effect of three different polishing systems (PoGo polishers, Enhance, Venus Supra) on six direct resin composites (Gradia Direct, Venus, Venus Diamond, Enamel Plus HFO, Tetric Evoceram, Filtek Supreme XT). MATERIALS AND METHODS For each composite, 12 square specimens were prepared: 9 specimens were polished, three for each different method, while three specimens were used as controls. Surface roughness was determined with AFM by measuring Root Mean Square (RMS) of average height. RESULTS PoGo polisher determined a significantly rougher surface, versus controls, in 5 out of 6 composites evaluated. Some significant differences from unpolished controls were observed also for Enhance polishing. Polishing with Venus Supra did not result in any significant difference in surface roughness versus controls. No differences were observed between different polishing systems. CONCLUSIONS These preliminary results suggest that Venus Supra polishing system could determine a smoother composite surface if compared to the other polishing systems tested. On this basis, we are conducting an in vivo study to evaluate bacterial colonization on some combinations of composites and polishing protocols. 12 14 2012 189 189 TODENTJ-6-189 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2012-12-14 10.2174/1874210601206010189 1553505401 https://opendentistryjournal.com/VOLUME/6/PAGE/189/ https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-189/TODENTJ-6-189.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-189/TODENTJ-6-189.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-189/TODENTJ-6-189.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-189/TODENTJ-6-189.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-189/TODENTJ-6-189.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-189/TODENTJ-6-189.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-189/TODENTJ-6-189.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-189/TODENTJ-6-189.xml