Evaluation of surface roughness of microhibrid and condensable composites after finishing and polishing procedures

Abstract

The objective of this study was to evaluate surface roughness of four microhybrid (Charisma, Fill Magic, Z250 and Tetric Ceram) and four condensable composites (Alert, Surefil, Fill Magic and Te- tric Ceram HB) after the procedu- res of finishing and polishing with fine diamond point (F), extra fine diamond point (FF), silicone point (Enhance) and felt disc with abrasi- ve paste (Diamond R). Ten samples for each composite were measured for surface roughness with a sur- face profilometer (Mitutoyo) after each step of the polishing sequence. The results showed that for the microhybride composites there was a significant difference in the superficial roughness in all the stages of finishing and polishing and that Charisma presented the lower final roughness. The conden- sable composites polishing with the paste did not reduce in a significant manner the superficial roughness in relation to the Enhance points. The lower superficial roughness could be attributed to the composi- tes Tetric Ceram HB and Surefil. Key words: composite, polishing, roughness, dental materials.