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Influence of pH, bleaching agents, and acid etching on surface wear of bovine enamel

Development of new materials for tooth bleaching justifies the need for studies to evaluate the changes in the enamel surface caused by different bleaching protocols. OBJECTIVE: The aim of this study was to evaluate the bovine dental enamel wear in function of different bleaching gel protocols, acid...

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Autores principales: Soares, Ana Flávia, Bombonatti, Juliana Fraga Soares, Alencar, Marina Studart, Consolmagno, Elaine Cristina, Honório, Heitor Marques, Mondelli, Rafael Francisco Lia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Faculdade De Odontologia De Bauru - USP 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4775006/
https://www.ncbi.nlm.nih.gov/pubmed/27008254
http://dx.doi.org/10.1590/1678-775720150281
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author Soares, Ana Flávia
Bombonatti, Juliana Fraga Soares
Alencar, Marina Studart
Consolmagno, Elaine Cristina
Honório, Heitor Marques
Mondelli, Rafael Francisco Lia
author_facet Soares, Ana Flávia
Bombonatti, Juliana Fraga Soares
Alencar, Marina Studart
Consolmagno, Elaine Cristina
Honório, Heitor Marques
Mondelli, Rafael Francisco Lia
author_sort Soares, Ana Flávia
collection PubMed
description Development of new materials for tooth bleaching justifies the need for studies to evaluate the changes in the enamel surface caused by different bleaching protocols. OBJECTIVE: The aim of this study was to evaluate the bovine dental enamel wear in function of different bleaching gel protocols, acid etching and pH variation. MATERIAL AND METHODS: Sixty fragments of bovine teeth were cut, obtaining a control and test areas. In the test area, one half received etching followed by a bleaching gel application, and the other half, only the bleaching gel. The fragments were randomly divided into six groups (n=10), each one received one bleaching session with five hydrogen peroxide gel applications of 8 min, activated with hybrid light, diode laser/blue LED (HL) or diode laser/violet LED (VHL) (experimental): Control (C); 35% Total Blanc Office (TBO35HL); 35% Lase Peroxide Sensy (LPS35HL); 25% Lase Peroxide Sensy II (LPS25HL); 15% Lase Peroxide Lite (LPL15HL); and 10% hydrogen peroxide (experimental) (EXP10VHL). pH values were determined by a pHmeter at the initial and final time periods. Specimens were stored, subjected to simulated brushing cycles, and the superficial wear was determined (μm). ANOVA and Tukey´s tests were applied (α=0.05). RESULTS: The pH showed a slight decrease, except for Group LPL15HL. Group LPS25HL showed the highest degree of wear, with and without etching. CONCLUSION: There was a decrease from the initial to the final pH. Different bleaching gels were able to increase the surface wear values after simulated brushing. Acid etching before bleaching increased surface wear values in all groups.
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spelling pubmed-47750062016-03-03 Influence of pH, bleaching agents, and acid etching on surface wear of bovine enamel Soares, Ana Flávia Bombonatti, Juliana Fraga Soares Alencar, Marina Studart Consolmagno, Elaine Cristina Honório, Heitor Marques Mondelli, Rafael Francisco Lia J Appl Oral Sci Original Articles Development of new materials for tooth bleaching justifies the need for studies to evaluate the changes in the enamel surface caused by different bleaching protocols. OBJECTIVE: The aim of this study was to evaluate the bovine dental enamel wear in function of different bleaching gel protocols, acid etching and pH variation. MATERIAL AND METHODS: Sixty fragments of bovine teeth were cut, obtaining a control and test areas. In the test area, one half received etching followed by a bleaching gel application, and the other half, only the bleaching gel. The fragments were randomly divided into six groups (n=10), each one received one bleaching session with five hydrogen peroxide gel applications of 8 min, activated with hybrid light, diode laser/blue LED (HL) or diode laser/violet LED (VHL) (experimental): Control (C); 35% Total Blanc Office (TBO35HL); 35% Lase Peroxide Sensy (LPS35HL); 25% Lase Peroxide Sensy II (LPS25HL); 15% Lase Peroxide Lite (LPL15HL); and 10% hydrogen peroxide (experimental) (EXP10VHL). pH values were determined by a pHmeter at the initial and final time periods. Specimens were stored, subjected to simulated brushing cycles, and the superficial wear was determined (μm). ANOVA and Tukey´s tests were applied (α=0.05). RESULTS: The pH showed a slight decrease, except for Group LPL15HL. Group LPS25HL showed the highest degree of wear, with and without etching. CONCLUSION: There was a decrease from the initial to the final pH. Different bleaching gels were able to increase the surface wear values after simulated brushing. Acid etching before bleaching increased surface wear values in all groups. Faculdade De Odontologia De Bauru - USP 2016 /pmc/articles/PMC4775006/ /pubmed/27008254 http://dx.doi.org/10.1590/1678-775720150281 Text en http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Articles
Soares, Ana Flávia
Bombonatti, Juliana Fraga Soares
Alencar, Marina Studart
Consolmagno, Elaine Cristina
Honório, Heitor Marques
Mondelli, Rafael Francisco Lia
Influence of pH, bleaching agents, and acid etching on surface wear of bovine enamel
title Influence of pH, bleaching agents, and acid etching on surface wear of bovine enamel
title_full Influence of pH, bleaching agents, and acid etching on surface wear of bovine enamel
title_fullStr Influence of pH, bleaching agents, and acid etching on surface wear of bovine enamel
title_full_unstemmed Influence of pH, bleaching agents, and acid etching on surface wear of bovine enamel
title_short Influence of pH, bleaching agents, and acid etching on surface wear of bovine enamel
title_sort influence of ph, bleaching agents, and acid etching on surface wear of bovine enamel
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4775006/
https://www.ncbi.nlm.nih.gov/pubmed/27008254
http://dx.doi.org/10.1590/1678-775720150281
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