Evaluation of the Effect of Different Finishing and Polishing Systems on Surface Roughness and Color Stability of Different Restorative Materials

Objectives: The aim of this in vitro study is to evaluate the effect of different finishing and polishing systems on surface roughness and color stability of different restorative materials. Material and Methods: Glass hybrid (Equia Forte), glass carbomer (GCP Glass Fill), resin modified glass ionomer (Fuji II LC), compomer (Dyract XP) and microhybride composite (Filtek Z250) materials are used and 150 disc-shaped specimens were prepared. Specimens randomly divided into Mylar strip, aluminum oxide discs and polishing rubber subgroups. Surface roughness is determined by a Profilometer, baseline and after 48 hours immersion in coffee color measurements are made with a spectrophotometer. Statistical analyses are made with two-way ANOVA, Tamhane’s test and Pearson correlation tests. Results: : The highest Ra values are obtained at Equia Forte (1.21) and GCP Glass Fill (1.14), the lowest at Filtek Z250 (0.24) and Dyract XP (0.27) groups. The lowest Ra values of finishing and polishing systems are obtained at control (0.56) and Sof-Lex (0.56) groups, the highest at OneGloss (1.06). The lowest ∆E value is obtained at GCP Glass Fill (1.41) and the highest at Fuji II LC (5.41) and Equia Forte (5.31) groups. The lowest ∆E value of finishing and polishing systems is obtained at Sof-Lex (3.51) and the highest at OneGloss (4.59) group. Conclusion: Polishing rubbers showed more surface roughness and color change than aluminum oxide discs. But the efficiency of finishing and polishing system depends on the restorative materials too.