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Published on: January 17, 2025
Effects of polishing systems and storage media on color stability and surface roughness of bulk-fill restorative
Enes Kiliç1, Emine Sirin Karaarslan2, Hüseyin Hatirli3
1Private Practice.
Purpose:
To determine the effect of polishing systems and storage media on surface roughness and color change of four bulk-fill restorative composites.
Methods:
Four bulk-fill restorative composites and one micro-hybrid resin composite were used in this study. 72 cylindrical specimens were prepared for each resin composite. The specimens were divided into three polishing groups and further solution subgroups (n= 8). Surface roughness (Ra) and color were measured before and after the immersion periods. Statistical analyses were performed using three-way analysis of variance and Bonferroni tests (P< 0.05).
Results:
Baseline Ra values were lower in the unpolished groups. Immersion in solutions increased the Ra of all resin composites tested. The lowest ΔE*ab was observed in Filtek One Bulk-Fill groups immersed in artificial saliva. Filtek One Bulk-Fill polished with Twist Dia showed lower ΔE*ab values than polished with Sof-Lex and the unpolished groups (P< 0.05). A weak positive correlation was observed between the baseline Ra and ΔE*ab.
Clinical Significance:
Color stability and surface roughness of bulk-fill restorative composites seems to be dependent on the composition of the material and polishing system used. Surface pre-reacted glass-ionomer filler containing bulk-fill restorative composite was the most stain-susceptible resin composite.
