ArticleClinical oral investigations2025
Effects of types of air polishing powders on roughness, microhardness, color, and gloss of gingiva-colored resin-based composites.
Article in Clinical oral investigations, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- The Shear Bond Strength of Gum-Imitating Composites with Traditional Composites-Preliminary Studies.Materials (Basel, Switzerland) · 2026Article
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3 authors.
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Abstract
backgroundThis study aimed to evaluate the effects of air polishing powders on the roughness, microhardness, color, and gloss of two types of gingiva-colored resin-based composites (GCRBCs).
methodsDisc-shaped specimens were prepared from two GCRBCs (Gradia Plus Gum, GC: Group G; Crea.lign, Bredent: Group C). Specimens subjected to air polishing were divided into two subgroups (n = 16): erythritol (Group G-e, Group C-e) and sodium bicarbonate (Group G-s, Group C-s). The roughness (Ra), microhardness (VHN), color (ΔE*
resultsSurface roughness showed statistically significant differences between initial and final measurements across all groups (G-s: p < 0.001; C-s: p = 0.002; G-e: p = 0.003; C-e: p = 0.011), with final Ra values being consistently higher than initial ones. Group C-e did not show significant differences (p = 0.294) in terms of microhardness after treatment, while hardness decreased in all other groups. In the final measurements, significant differences in color values were observed based on the type of powder applied (p = 0.026 for ΔE
conclusionIt was observed that air polishing, particularly with sodium bicarbonate, can lead to significant roughness and discoloration in GCRBCs. Consequently, it is crucial to employ air-polishing devices correctly, limit their use on resin-based composite restorations, and opt for less abrasive polishing powders. These practices are essential to prevent increased surface roughness and surface microhardness and preserve color and gloss in GCRBCs.
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