Effect of additional polishing on the color stability and surface roughness of single-shade resin composites

OpenAlex İngilizce

BACKGROUND: The aim was to examine the effect of three polishing systems (TwistDia, SuperSnap, and Opti 1Step) and additional polishing on the surface roughness and color change of two universal resin composites (OptiShade and Omnichroma) immersed in coffee. METHODS: A total of 80 samples were prepared, 40 samples for each of the resin composites (n:10). For the control group no polishing step was applied. Other samples were polished using Twist Dia, Opti 1Step, or SuperSnap. The baseline (T0) surface roughness and color parameters of the samples were measured. After the samples were immersed in coffee for 12 days (T1), and after the surface of the samples was polished, each sample were measured (T2). RESULTS: In both universal resin composites, the lowest surface roughness values were obtained from the control group (p < 0.05). The highest surface roughness values were observed in the group polished with SuperSnap of OptiShade resin, both after immersed in coffee and after additional polishing(p < 0.05). İt was observed that samples prepared with OptiShade resin composite samples generally showed lower ΔE values compared than the other resin composites. CONCLUSIONS: Additional polishing applications, caused changes in color parameters and increases in surface roughness in single shade resin composites, although not statistically significant.