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Fluorinated Agents Effects on Orthodontic Alloys: A Descriptive In Vitro Study

Fluoride-based mouthwashes and gels are preventive measures in countering demineralization and caries but, modifying environmental acidity, can reduce the wet corrosion resistance of orthodontic alloys. To evaluate chemical stability, in vitro experiments were conducted on stainless steel and nickel...

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Autores principales: Condò, Roberta, Carli, Elisabetta, Cioffi, Alessandro, Cataldi, Maria Elena, Quinzi, Vincenzo, Casaglia, Adriano, Giancotti, Aldo, Pirelli, Paola, Lucarini, Ivano, Maita, Francesco, Maiolo, Luca, Mampieri, Gianluca
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9267448/
https://www.ncbi.nlm.nih.gov/pubmed/35806740
http://dx.doi.org/10.3390/ma15134612
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author Condò, Roberta
Carli, Elisabetta
Cioffi, Alessandro
Cataldi, Maria Elena
Quinzi, Vincenzo
Casaglia, Adriano
Giancotti, Aldo
Pirelli, Paola
Lucarini, Ivano
Maita, Francesco
Maiolo, Luca
Mampieri, Gianluca
author_facet Condò, Roberta
Carli, Elisabetta
Cioffi, Alessandro
Cataldi, Maria Elena
Quinzi, Vincenzo
Casaglia, Adriano
Giancotti, Aldo
Pirelli, Paola
Lucarini, Ivano
Maita, Francesco
Maiolo, Luca
Mampieri, Gianluca
author_sort Condò, Roberta
collection PubMed
description Fluoride-based mouthwashes and gels are preventive measures in countering demineralization and caries but, modifying environmental acidity, can reduce the wet corrosion resistance of orthodontic alloys. To evaluate chemical stability, in vitro experiments were conducted on stainless steel and nickel–titanium wires, weighed before and after immersion in household fluorinated mouthwashes and gels, measuring weight variations and elution of metal ions from acid corrosion phenomena. Elution samples were analyzed by inductively coupled plasma mass spectrometry, detecting residual ion concentration, while surface changes were analyzed under scanning electron microscopy. Results showed stainless steel wires do not undergo significant erosion when exposed to most fluorinated mouthwashes but, at prolonged exposure, alloys elute gradually greater amounts of metals and Ni–Ti wires become more sensitive to some mouthwashes. Ions’ elution varies considerably, especially for Ni–Ti wires, if exposed to household fluorinated gels, for which significant negative values were obtained. Changes, affecting wires’ outer layer, negatively act on shiny appearance and luster, reducing corrosion resistance. Although examined orthodontic wires showed good chemical stability and low toxicity, surface corrosion from exposure to fluorinated agents was observed. Home use must be accompanied by clinician prescription and, for household dental gels, must follow manufacturers’ recommendations, ensuring prophylactic action without damaging alloys surfaces.
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spelling pubmed-92674482022-07-09 Fluorinated Agents Effects on Orthodontic Alloys: A Descriptive In Vitro Study Condò, Roberta Carli, Elisabetta Cioffi, Alessandro Cataldi, Maria Elena Quinzi, Vincenzo Casaglia, Adriano Giancotti, Aldo Pirelli, Paola Lucarini, Ivano Maita, Francesco Maiolo, Luca Mampieri, Gianluca Materials (Basel) Article Fluoride-based mouthwashes and gels are preventive measures in countering demineralization and caries but, modifying environmental acidity, can reduce the wet corrosion resistance of orthodontic alloys. To evaluate chemical stability, in vitro experiments were conducted on stainless steel and nickel–titanium wires, weighed before and after immersion in household fluorinated mouthwashes and gels, measuring weight variations and elution of metal ions from acid corrosion phenomena. Elution samples were analyzed by inductively coupled plasma mass spectrometry, detecting residual ion concentration, while surface changes were analyzed under scanning electron microscopy. Results showed stainless steel wires do not undergo significant erosion when exposed to most fluorinated mouthwashes but, at prolonged exposure, alloys elute gradually greater amounts of metals and Ni–Ti wires become more sensitive to some mouthwashes. Ions’ elution varies considerably, especially for Ni–Ti wires, if exposed to household fluorinated gels, for which significant negative values were obtained. Changes, affecting wires’ outer layer, negatively act on shiny appearance and luster, reducing corrosion resistance. Although examined orthodontic wires showed good chemical stability and low toxicity, surface corrosion from exposure to fluorinated agents was observed. Home use must be accompanied by clinician prescription and, for household dental gels, must follow manufacturers’ recommendations, ensuring prophylactic action without damaging alloys surfaces. MDPI 2022-06-30 /pmc/articles/PMC9267448/ /pubmed/35806740 http://dx.doi.org/10.3390/ma15134612 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Condò, Roberta
Carli, Elisabetta
Cioffi, Alessandro
Cataldi, Maria Elena
Quinzi, Vincenzo
Casaglia, Adriano
Giancotti, Aldo
Pirelli, Paola
Lucarini, Ivano
Maita, Francesco
Maiolo, Luca
Mampieri, Gianluca
Fluorinated Agents Effects on Orthodontic Alloys: A Descriptive In Vitro Study
title Fluorinated Agents Effects on Orthodontic Alloys: A Descriptive In Vitro Study
title_full Fluorinated Agents Effects on Orthodontic Alloys: A Descriptive In Vitro Study
title_fullStr Fluorinated Agents Effects on Orthodontic Alloys: A Descriptive In Vitro Study
title_full_unstemmed Fluorinated Agents Effects on Orthodontic Alloys: A Descriptive In Vitro Study
title_short Fluorinated Agents Effects on Orthodontic Alloys: A Descriptive In Vitro Study
title_sort fluorinated agents effects on orthodontic alloys: a descriptive in vitro study
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9267448/
https://www.ncbi.nlm.nih.gov/pubmed/35806740
http://dx.doi.org/10.3390/ma15134612
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