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The study assesses how different polishing systems affect discoloration, surface roughness, and bacterial adhesion of composite resins.

July 4, 2026Scientific ReportsOpen Access

Effect of different polishing systems on discoloration, surface roughness, and bacterial adhesion of contemporary composite resins

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Randomized trial evaluates polishing systems on discoloration and adhesion in composite resins, suggesting optimal choice for clinicians.

The study assesses how different polishing systems affect discoloration, surface roughness, and bacterial adhesion of composite resins.
Four types of composite resins were tested with polishing systems: Mylar Strip, OneGloss, OptiDisc, and Clearfil Twist Dia.
Surface roughness was measured using a contact profilometer and bacterial adhesion was quantified by CFU counting.
Data was analyzed with two-way ANOVA to evaluate the effects of polishing systems.
CME showed the least discoloration among all tested composites (p < 0.001).
Greatest discoloration was in the Mylar Strip control subgroup (p < 0.001), with no significant differences among OneGloss, OptiDisc, and Clearfil Twist Dia.
OMN had the lowest surface roughness (p < 0.001) and highest bacterial adhesion was observed in the control subgroup for all composite resins (p < 0.001).

Yılmaz et al. (2026) studied this question.

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