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Excessive Dental Bleaching with 22% Carbamide Peroxide Combined with Erosive and Abrasive Challenges: New Insights into the Morphology and Surface Properties of Enamel

This study aimed to evaluate the effects of 22% carbamide peroxide combined with an erosive challenge and simulated brushing on enamel. Bovine incisor teeth were divided into G1, tooth bleaching; G2, tooth bleaching + erosive challenge; and G3, tooth bleaching + erosive challenge + simulated brushin...

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Autores principales: Barros Júnior, Edson de Sousa, Ribeiro, Mara Eliane Soares, Lima, Rafael Rodrigues, Souza Júnior, Mário Honorato da Silva e, Loretto, Sandro Cordeiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9655651/
https://www.ncbi.nlm.nih.gov/pubmed/36363088
http://dx.doi.org/10.3390/ma15217496
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author Barros Júnior, Edson de Sousa
Ribeiro, Mara Eliane Soares
Lima, Rafael Rodrigues
Souza Júnior, Mário Honorato da Silva e
Loretto, Sandro Cordeiro
author_facet Barros Júnior, Edson de Sousa
Ribeiro, Mara Eliane Soares
Lima, Rafael Rodrigues
Souza Júnior, Mário Honorato da Silva e
Loretto, Sandro Cordeiro
author_sort Barros Júnior, Edson de Sousa
collection PubMed
description This study aimed to evaluate the effects of 22% carbamide peroxide combined with an erosive challenge and simulated brushing on enamel. Bovine incisor teeth were divided into G1, tooth bleaching; G2, tooth bleaching + erosive challenge; and G3, tooth bleaching + erosive challenge + simulated brushing, and evaluated at T0, before any intervention; T1, 14 days after the proposed treatments; and T2, 28 days after the proposed treatments. Tooth bleaching was performed daily for 1 h for 28 days. The microhardness, surface roughness, mass variation, and ultrastructure were analyzed at T0, T1, and T2. Two-way analysis of variance for repeated measures was performed and Tukey’s post hoc test (α = 5%) was used. The surface roughness increased in groups G2 and G3 as a function of time, whereas microhardness and mass measurements demonstrated a significant reduction for groups associated with challenges. Ultrastructural evaluation indicated a loss of the aprismatic layer and exposure of the enamel prisms in all groups after 14 days of bleaching, with more pronounced results in G2 and G3 after 28 days. In conclusion, abrasive and erosive challenges potentiated the deleterious effects of tooth whitening on microhardness, ultramorphology, and mass, without affecting the roughness of dental enamel.
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spelling pubmed-96556512022-11-15 Excessive Dental Bleaching with 22% Carbamide Peroxide Combined with Erosive and Abrasive Challenges: New Insights into the Morphology and Surface Properties of Enamel Barros Júnior, Edson de Sousa Ribeiro, Mara Eliane Soares Lima, Rafael Rodrigues Souza Júnior, Mário Honorato da Silva e Loretto, Sandro Cordeiro Materials (Basel) Article This study aimed to evaluate the effects of 22% carbamide peroxide combined with an erosive challenge and simulated brushing on enamel. Bovine incisor teeth were divided into G1, tooth bleaching; G2, tooth bleaching + erosive challenge; and G3, tooth bleaching + erosive challenge + simulated brushing, and evaluated at T0, before any intervention; T1, 14 days after the proposed treatments; and T2, 28 days after the proposed treatments. Tooth bleaching was performed daily for 1 h for 28 days. The microhardness, surface roughness, mass variation, and ultrastructure were analyzed at T0, T1, and T2. Two-way analysis of variance for repeated measures was performed and Tukey’s post hoc test (α = 5%) was used. The surface roughness increased in groups G2 and G3 as a function of time, whereas microhardness and mass measurements demonstrated a significant reduction for groups associated with challenges. Ultrastructural evaluation indicated a loss of the aprismatic layer and exposure of the enamel prisms in all groups after 14 days of bleaching, with more pronounced results in G2 and G3 after 28 days. In conclusion, abrasive and erosive challenges potentiated the deleterious effects of tooth whitening on microhardness, ultramorphology, and mass, without affecting the roughness of dental enamel. MDPI 2022-10-26 /pmc/articles/PMC9655651/ /pubmed/36363088 http://dx.doi.org/10.3390/ma15217496 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
Barros Júnior, Edson de Sousa
Ribeiro, Mara Eliane Soares
Lima, Rafael Rodrigues
Souza Júnior, Mário Honorato da Silva e
Loretto, Sandro Cordeiro
Excessive Dental Bleaching with 22% Carbamide Peroxide Combined with Erosive and Abrasive Challenges: New Insights into the Morphology and Surface Properties of Enamel
title Excessive Dental Bleaching with 22% Carbamide Peroxide Combined with Erosive and Abrasive Challenges: New Insights into the Morphology and Surface Properties of Enamel
title_full Excessive Dental Bleaching with 22% Carbamide Peroxide Combined with Erosive and Abrasive Challenges: New Insights into the Morphology and Surface Properties of Enamel
title_fullStr Excessive Dental Bleaching with 22% Carbamide Peroxide Combined with Erosive and Abrasive Challenges: New Insights into the Morphology and Surface Properties of Enamel
title_full_unstemmed Excessive Dental Bleaching with 22% Carbamide Peroxide Combined with Erosive and Abrasive Challenges: New Insights into the Morphology and Surface Properties of Enamel
title_short Excessive Dental Bleaching with 22% Carbamide Peroxide Combined with Erosive and Abrasive Challenges: New Insights into the Morphology and Surface Properties of Enamel
title_sort excessive dental bleaching with 22% carbamide peroxide combined with erosive and abrasive challenges: new insights into the morphology and surface properties of enamel
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9655651/
https://www.ncbi.nlm.nih.gov/pubmed/36363088
http://dx.doi.org/10.3390/ma15217496
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