Effect of a vinegar-hydrogen peroxide mixture on the surface properties of a cobalt-chromium alloy: A possible disinfectant for removable partial dentures
| Autor: | Larissa Dolfini Alexandrino, Alexandra Feldmann, Sara Fraga, Myriam Pereira Kapczinski, Vinícius Rodrigues dos Santos, Cristiane Machado Mengatto, Wander José da Silva |
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| Rok vydání: | 2022 |
| Předmět: |
Materials science
Sodium Hypochlorite Surface Properties Peroxide 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Peracetic acid Materials Testing Surface roughness Hydrogen peroxide Acetic Acid technology industry and agriculture Water Cobalt Hydrogen Peroxide 030206 dentistry Surface energy chemistry Distilled water Sodium hypochlorite Knoop hardness test Denture Partial Removable Chromium Alloys Oral Surgery Disinfectants Nuclear chemistry |
| Zdroj: | The Journal of Prosthetic Dentistry. 127:929-935 |
| ISSN: | 0022-3913 |
| Popis: | Statement of problem A vinegar-hydrogen peroxide mixture has been reported to be effective in eliminating Candida albicans and Staphylococcus aureus from acrylic resin, and its action has been reported to be comparable with that of sodium hypochlorite or peracetic acid. However, the effects of this mixture on cobalt-chromium alloys remain unknown. Purpose The purpose of this in vitro study was to evaluate the surface roughness, Knoop microhardness, surface free energy, and wettability of a cobalt-chromium alloy when exposed to a vinegar-hydrogen peroxide mixture. Material and methods Fifty specimens of cobalt-chromium alloy were fabricated and immersed for 900 minutes, simulating 3 months of a daily 10-minute immersion in the following chemical agents (n=10): distilled water (W); 0.5% sodium hypochlorite (H); 3% hydrogen peroxide and water dilution in 1:1 ratio (HP); white-wine vinegar and water dilution in 1:1 ratio (V); and vinegar and hydrogen peroxide mixture in 1:1 ratio (VHP). Surface roughness, Knoop microhardness, surface free energy, and wettability were measured with single blinding before and after immersions. Data were statistically analyzed by using 2-way repeated measures ANOVA (α=.05). Results The vinegar-hydrogen peroxide mixture did not affect the surface roughness or Knoop microhardness. However, 0.5% sodium hypochlorite significantly increased the roughness and decreased microhardness. Surface free energy and wettability increased after immersions, regardless of the types of solution. Conclusions Immersion in a vinegar-hydrogen peroxide mixture did not affect the surface characteristics of a cobalt-chromium alloy. |
| Databáze: | OpenAIRE |
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