Biomaterial Investigations in Dentistry · Published 2026-07-02 · DOI 10.2340/biid.v13.46369
Eri Hendra Jubhari, Baiq Zalfa Zahira Aurellia Nityasari, Rifaat Nurrahma
Background: Stainless steel wires are commonly used in removable partial dentures, but their corrosion resistance may be affected by intraoral pH changes and mechanical deformation, such as bending into C-clasps. Objective: To evaluate the corrosion resistance of straight and C-clasp stainless steel wires in artificial saliva (pH 5.5 and 7.0) and to assess the influence of bending on corrosion behavior. Materials and methods: An in vitro experimental study was conducted using four groups of stainless steel wires: straight pH 5.5, C-clasp pH 5.5, straight pH 7.0, and C-clasp pH 7.0. The samples were immersed for 4 weeks, with weekly weight measurements and corrosion rate calculations performed. Data were analyzed using repeated measures analysis of variance (ANOVA) or the Friedman test and two-way ANOVA for intergroup comparisons. Results: Two-way ANOVA revealed a significant effect of pH on corrosion behavior (p < 0.001), whereas wire configuration had no significant effect (p > 0.05). Acidic conditions (pH 5.5) resulted in significantly greater weight loss in both straight and C-clasp wires than neutral conditions, indicating increased corrosion in acidic environments. At pH 7.0, the corrosion rates were minimal or slightly negative, suggesting limited corrosion or minor weight changes. Conclusion: Environmental pH plays a central role in corrosion behavior, with acidic conditions accelerating degradation. No significant effect of bending into a C-clasp on corrosion susceptibility was observed under the present conditions. Maintaining an optimal oral pH may help preserve the integrity of stainless steel components in removable partial dentures.
Abstract from DOAJ. Public domain (CC0 1.0).
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Jubhari, E., Nityasari, B., Nurrahma, R. (2026). Corrosion resistance of straight and C-clasp stainless steel wrought wires in artificial saliva. Biomaterial Investigations in Dentistry. https://doi.org/10.2340/biid.v13.46369