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August 20, 2026BMC Oral HealthOpen Access

The in-vitro investigation of the effect of finishing and polishing methods on the surface roughness of composites

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Authors

KSKerem SoyluGGGürçağ GÜRGGGürkan Gür

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Overview

In vitro study demonstrates that aluminum oxide discs yield smoother composite surfaces than rubber systems, suggesting finishing tool choice directly impacts restoration smoothness.

Key Points

  • To evaluate the effect of five finishing and polishing systems on the surface roughness of two anterior resin composites with differing filler characteristics.
  • Prepared 120 disk-shaped composite specimens (N=120; 60 G-aenial Anterior and 60 Estelite Asteria) randomly allocated into six treatment groups (n=10 per group).
  • Tested five finishing and polishing protocols—Sof-Lex, OptiDisc, Clearfil Twist Dia, OneGloss, and Sof-Lex Spiral—against an unpolished Mylar strip control.
  • Measured surface roughness (Ra, µm) using a contact profilometer and qualitatively examined representative specimens using scanning electron microscopy.
  • The unpolished Mylar strip control produced the lowest surface roughness values across both composite types.
  • Multi-step aluminum oxide disc systems (Sof-Lex and OptiDisc) achieved lower roughness values than the one-step OneGloss and two-step Sof-Lex Spiral rubber systems.
  • Estelite Asteria demonstrated lower overall surface roughness than G-aenial Anterior, showing statistically significant reductions in roughness in the control, OptiDisc, Twist Dia, and overall comparisons (p < 0.05).

Cite This Study

Soylu et al. (2026) studied this question.

synapsesocial.com/papers/6a86b5da8a91293e6a1cd58chttps://doi.org/10.1186/s12903-026-09619-2
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Effect of Two-Step Polishing Systems on the Surface Roughness of Bulk Fill Resin Composites: An In-Vitro Study2026
  2. 2In Vitro Effects of Sof-Lex, Eve, and Astropol Polishing Systems on Composite Resin Surface Roughness After Aging2024
  3. 3Comparative Evaluation of Polishing Protocols on the Surface Roughness and Gloss of Additively Manufactured Permanent Resins2026
  4. 4Effect of Polishing Systems on Surface Roughness of Universal Resin Composites.2025
  5. 5Effect of different polishing systems on discoloration, surface roughness, and bacterial adhesion of contemporary composite resins2026