There is no in vitro evidence to support the choice for nanofill or su bmi cron composites over traditional microhybrids based on better surface smoothness and /or gloss , or based upon maintenance of those superficial characteristics after surface challenges
OBJECTIVES Despite nanofill and su bmi cron composites ' aim to provide high initial polishing combined with superior smoothness and gloss retention , the question still remains whether clinicians should consider using these new material s over traditional microhybrids .
The aim of this paper was to systematic ally review the literature on how nanofills and su bmi crons react to polishing procedures and surface challenges in vitro compared with microhybrids .
The paper has also given an overview of the compositional characteristics of all resin composites and polishing systems whose performance was presented herein .
The effect of finishing and polishing procedures on the surface roughness of composite resin materials.
AIMS The aims of this study were to evaluate the effect of various finishing and polishing procedures on the surface roughness of six different composite resin material s ( Artemis Enamel , TPH Spectrum , Filtek A-110 , Filtek Supreme Enamel , Solitaire 2 , and Filtek P-60 ) as well as to evaluate the effectiveness of the surface sealant application ( BisCover ) on the surface roughness after finishing and polishing procedures of tested composites . METHODS AND MATERIAL S Specimens ( n=168 ) measuring 5 mm in diameter x 2 mm in thickness were fabricated in a plexiglass well covered with a Mylar strip using six composite resins . A control group of seven specimens of each material received no polishing after being cured under the Mylar strip . Twenty-one specimens for each composite were r and omly divided among three finishing and polishing groups ( n=7 ) . Each group was polished using a different system : Carbide bur/Sof-Lex disc , Carbide bur/Enhance disc with polishing paste , and Carbide bur/Edenta composite finishing kit . The average surface roughness ( Ra , microm ) of the control and treated specimens were measured with the Mitutoyo Surftest-402 Surface Roughness tester . After a surface sealant ( BisCover ) was applied to all treated specimens , according to manufacturer 's instructions , the average roughness ( Ra ) was measured again . Results were statistically analyzed using analysis of variance ( ANOVA ) and the post-hoc Scheffe 's test at a p<0.05 significance level . RESULTS Significant differences were found for the surface roughness ( p<0.05 ) with interaction among composite resins and the finishing systems used ( p<0.05 ) . Enhance/Biscover finishing and polishing procedure surface was not significantly different from the Mylar strip surface groups ( p>0.05 ) . The Mylar strip group was not significantly different from the Sof-Lex/BisCover and Edenta/BisCover groups . The ranking of mean Ra values by material s was as follows : Filtek Supreme Enamel < Filtek A110 < TPH Spectrum < Artemis < Filtek P-60 < Solitaire 2 . The ranking of mean Ra values by polishing systems was as follows : Enhance/BisCover < Mylar Strip < Sof-Lex/BisCover < Edenta/BisCover < Sof-Lex < Enhance < Edenta . CONCLUSION Smoother surfaces were recorded for the Enhance/BisCover and the Mylar strip-formed surface groups . The composite finishing kit Edenta significantly increased the Ra for all tested composites ( p<0.05 ) . But after finishing with Edenta , the use of a surface sealant ( BisCover ) significantly improved the surface smoothness of all tested composites ( p<0.05 ) . Use of BisCover surface sealant on anterior and posterior resin composite restorations after finishing and polishing procedures is recommended
There is no in vitro evidence to support the choice for nanofill or su bmi cron composites over traditional microhybrids based on better surface smoothness and /or gloss , or based upon maintenance of those superficial characteristics after surface challenges
OBJECTIVES Despite nanofill and su bmi cron composites ' aim to provide high initial polishing combined with superior smoothness and gloss retention , the question still remains whether clinicians should consider using these new material s over traditional microhybrids .
The aim of this paper was to systematic ally review the literature on how nanofills and su bmi crons react to polishing procedures and surface challenges in vitro compared with microhybrids .
The paper has also given an overview of the compositional characteristics of all resin composites and polishing systems whose performance was presented herein .