ArticleBiomaterial investigations in dentistry2026
Effect of fluoride toothpastes on surface roughness of nickel-titanium wires: an in vitro study.
Article in Biomaterial investigations in dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: The main objective of this Materials and Methods: Thirty rectangular superelastic NiTi wires (0.019 × 0.025", 20 mm length; Orthometric) were randomly assigned to three groups ( Results: Significant increases in surface roughness were observed in Group 1 (0.717 ± 0.085 to 2.440 ± 0.225 µm; Conclusions: Fluoride-containing toothpaste, particularly when combined with brushing, significantly increased surface roughness of NiTi wires, likely due to fluoride-induced degradation of the protective titanium oxide layer, which increases susceptibility to surface deterioration. Clinically, these findings suggest that fluoride-free formulations may represent a safer alternative for orthodontic patients requiring prolonged use of NiTi wires.
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