Effect of three prophylaxis methods on surface rouhness of giomer

Abstract

Prophylaxis methods are used to remove plaque and stain from tooth surfaces. Since the surface finish of restorations can be damaged or even destroyed by prophylaxis methods, the aim of the present study was to investigate the effect of three prophylaxis methods (pumice with rubber cup, pumice with brush and APD [Air Powder Polishing Device] on the surface roughness of giomer in vitro. Materials and Methods: Eighty cylindrical giomer samples with 6 mm diameter and 2 mm height were used. Following a 3-month period of storage in distilled water at 37C, the samples were randomly divided into 4 groups of 20. In group 1 (control), the prophylaxis procedure was not carried out. In groups 2 to 4 the samples were exposed to pumice with rubber cup, pumice with brush and APD prophylaxis methods, respectively. The surface roughness of the samples was measured using a profilemeter. In order to compare the surface roughness one-way ANOVA was used and two-by-two comparisons of the groups were made using Duncan's post hoc test. In this study, P<0.05 was considered significant. Results: There were statistically significant differences in surface roughness among groups (P<0.0005). Furthermore, in pairwise comparisons there were statistically significant differences between all the groups (P<0.05). Conclusion: The use of different prophylaxis methods resulted in an increased surface roughness of giomer compared with control group and the roughest surface was achieved following the use of APD, pumice with brush and pumice with rubber cup, respectively.