{"title":"用醋-过氧化氢混合物消毒对钴铬合金表面成分和形貌的影响。","authors":"Gabriela Silveira Sakis DDS , Myriam Pereira Kapczinski DDS, MSc, PhD , Sara Fraga DDS, MSc, PhD , Cristiane Machado Mengatto DDS, MSc, PhD","doi":"10.1016/j.prosdent.2022.11.011","DOIUrl":null,"url":null,"abstract":"<div><h3>Statement of problem</h3><div>Choosing the best disinfection agent for removable partial dentures<span> may be challenging since most commercially available disinfection solutions alter the properties of the metal framework.</span></div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to analyze the changes in the surface topography and elemental composition of a cobalt chromium (Co-Cr) alloy when immersed in a vinegar-hydrogen peroxide mixture.</div></div><div><h3>Material and methods</h3><div><span><span>Disk-shaped specimens (N=50) were fabricated with Co-Cr alloy and randomly distributed into 5 groups (N=10) according to the immersion solutions: distilled water (control) (W); 0.5% sodium<span> hypochlorite (H); 3% hydrogen peroxide and water in a 1:1 ratio (HP); </span></span>vinegar<span> and water in a 1:1 ratio (V); and vinegar and 3% hydrogen peroxide mixture in a 1:1 ratio (VHP). The immersions simulated 90 uses of 10 minutes each. The surface topography and the elemental composition were analyzed with scanning electron microscopy and energy-dispersive spectroscopy, before (T</span></span><sub>0</sub>) and after (T<sub>1</sub>) the immersions. The 2-way ANOVA for repeated measures was used for statistical comparisons (α=.05).</div></div><div><h3>Results</h3><div>The tested mixture (VHP) did not change the metal surface topography or increase the oxygen proportion, indicating that no corrosion occurred. Similarly, groups W, HP, and V had no topographic changes and nonsignificant statistical differences at T<sub>1</sub> for elemental composition (<em>P</em>>.05). However, the specimens immersed in sodium hypochlorite (H) showed staining, surface irregularity, composition change, with an appearance of 22.56% more oxygen, 41% less chromium, and 28.77% less cobalt at T<sub>1</sub> (<em>P</em><.05).</div></div><div><h3>Conclusions</h3><div>The immersion of Co-Cr alloy in a vinegar-hydrogen peroxide mixture did not change the surface structure of the metal.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 1061-1065"},"PeriodicalIF":4.3000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of disinfection with a vinegar-hydrogen peroxide mixture on the surface composition and topography of a cobalt chromium alloy\",\"authors\":\"Gabriela Silveira Sakis DDS , Myriam Pereira Kapczinski DDS, MSc, PhD , Sara Fraga DDS, MSc, PhD , Cristiane Machado Mengatto DDS, MSc, PhD\",\"doi\":\"10.1016/j.prosdent.2022.11.011\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Statement of problem</h3><div>Choosing the best disinfection agent for removable partial dentures<span> may be challenging since most commercially available disinfection solutions alter the properties of the metal framework.</span></div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to analyze the changes in the surface topography and elemental composition of a cobalt chromium (Co-Cr) alloy when immersed in a vinegar-hydrogen peroxide mixture.</div></div><div><h3>Material and methods</h3><div><span><span>Disk-shaped specimens (N=50) were fabricated with Co-Cr alloy and randomly distributed into 5 groups (N=10) according to the immersion solutions: distilled water (control) (W); 0.5% sodium<span> hypochlorite (H); 3% hydrogen peroxide and water in a 1:1 ratio (HP); </span></span>vinegar<span> and water in a 1:1 ratio (V); and vinegar and 3% hydrogen peroxide mixture in a 1:1 ratio (VHP). The immersions simulated 90 uses of 10 minutes each. The surface topography and the elemental composition were analyzed with scanning electron microscopy and energy-dispersive spectroscopy, before (T</span></span><sub>0</sub>) and after (T<sub>1</sub>) the immersions. The 2-way ANOVA for repeated measures was used for statistical comparisons (α=.05).</div></div><div><h3>Results</h3><div>The tested mixture (VHP) did not change the metal surface topography or increase the oxygen proportion, indicating that no corrosion occurred. Similarly, groups W, HP, and V had no topographic changes and nonsignificant statistical differences at T<sub>1</sub> for elemental composition (<em>P</em>>.05). However, the specimens immersed in sodium hypochlorite (H) showed staining, surface irregularity, composition change, with an appearance of 22.56% more oxygen, 41% less chromium, and 28.77% less cobalt at T<sub>1</sub> (<em>P</em><.05).</div></div><div><h3>Conclusions</h3><div>The immersion of Co-Cr alloy in a vinegar-hydrogen peroxide mixture did not change the surface structure of the metal.</div></div>\",\"PeriodicalId\":16866,\"journal\":{\"name\":\"Journal of Prosthetic Dentistry\",\"volume\":\"132 5\",\"pages\":\"Pages 1061-1065\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Prosthetic Dentistry\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S002239132200734X\",\"RegionNum\":2,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"DENTISTRY, ORAL SURGERY & MEDICINE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Prosthetic Dentistry","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S002239132200734X","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
Effects of disinfection with a vinegar-hydrogen peroxide mixture on the surface composition and topography of a cobalt chromium alloy
Statement of problem
Choosing the best disinfection agent for removable partial dentures may be challenging since most commercially available disinfection solutions alter the properties of the metal framework.
Purpose
The purpose of this in vitro study was to analyze the changes in the surface topography and elemental composition of a cobalt chromium (Co-Cr) alloy when immersed in a vinegar-hydrogen peroxide mixture.
Material and methods
Disk-shaped specimens (N=50) were fabricated with Co-Cr alloy and randomly distributed into 5 groups (N=10) according to the immersion solutions: distilled water (control) (W); 0.5% sodium hypochlorite (H); 3% hydrogen peroxide and water in a 1:1 ratio (HP); vinegar and water in a 1:1 ratio (V); and vinegar and 3% hydrogen peroxide mixture in a 1:1 ratio (VHP). The immersions simulated 90 uses of 10 minutes each. The surface topography and the elemental composition were analyzed with scanning electron microscopy and energy-dispersive spectroscopy, before (T0) and after (T1) the immersions. The 2-way ANOVA for repeated measures was used for statistical comparisons (α=.05).
Results
The tested mixture (VHP) did not change the metal surface topography or increase the oxygen proportion, indicating that no corrosion occurred. Similarly, groups W, HP, and V had no topographic changes and nonsignificant statistical differences at T1 for elemental composition (P>.05). However, the specimens immersed in sodium hypochlorite (H) showed staining, surface irregularity, composition change, with an appearance of 22.56% more oxygen, 41% less chromium, and 28.77% less cobalt at T1 (P<.05).
Conclusions
The immersion of Co-Cr alloy in a vinegar-hydrogen peroxide mixture did not change the surface structure of the metal.
期刊介绍：
The Journal of Prosthetic Dentistry is the leading professional journal devoted exclusively to prosthetic and restorative dentistry. The Journal is the official publication for 24 leading U.S. international prosthodontic organizations. The monthly publication features timely, original peer-reviewed articles on the newest techniques, dental materials, and research findings. The Journal serves prosthodontists and dentists in advanced practice, and features color photos that illustrate many step-by-step procedures. The Journal of Prosthetic Dentistry is included in Index Medicus and CINAHL.
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