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Effect of staining on the mechanical, surface and biological properties of lithium disilicate
PURPOSE: To simulate biodegradation and wear of stained and glazed CAD lithium disilicate ceramic, and evaluate their effects on the microbial adherence and mechanical and surface properties of lithium disilicate ceramic MATERIALS AND METHODS: 160 lithium disilicate ceramic discs were fabricated and...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8864374/ https://www.ncbi.nlm.nih.gov/pubmed/35241903 http://dx.doi.org/10.1016/j.sdentj.2021.12.007 |
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author | Serrado de Pinho Barcellos, Aline Soares Miranda, Jean Amaral, Marina Araújo Alvarenga, Janaína Nogueira, Lafayette Tomomitsu Kimpara, Estevão |
author_facet | Serrado de Pinho Barcellos, Aline Soares Miranda, Jean Amaral, Marina Araújo Alvarenga, Janaína Nogueira, Lafayette Tomomitsu Kimpara, Estevão |
author_sort | Serrado de Pinho Barcellos, Aline |
collection | PubMed |
description | PURPOSE: To simulate biodegradation and wear of stained and glazed CAD lithium disilicate ceramic, and evaluate their effects on the microbial adherence and mechanical and surface properties of lithium disilicate ceramic MATERIALS AND METHODS: 160 lithium disilicate ceramic discs were fabricated and divided in eight groups according to manual stain and glaze application with a fine paint brush (without stain and glaze; with stain and glaze) and aging procedures (no aging; wear at 30 N load, 1.7 Hz, 3 × 10(5) cycles; biodegradation by exposure to microcosm biofilm; biodegradation + wear; biodegradation + wear). Profilometry was performed to determine the surface roughness and the wear consequences. Biaxial flexural strength test was performed, and a Streptococcus mutans adherence test was conducted to evaluate the number of colony forming units. RESULTS: Unaged samples with and without stain and glaze presented the lowest values of surface roughness (p < 0.001), but after aging (wear, biodegradation, or both), the samples in the stain and glaze groups were rougher than those in the no stain and glaze groups (p < 0.001). The stain and glaze groups showed the highest volume of wear after aging (p = 0.04), and had the lowest flexural strength values (p < 0.01), irrespective of the aging method. The aging method did not affect the flexural strength (p = 0.06). The number of colonies forming units was higher for biodegradation + no stain and glaze, biodegradation + wear + no stain and glaze, no aging + stain and glaze, biodegradation + stain and glaze, and biodegradation + wear + stain and glaze. The lowest values were observed for no aging + no stain and glaze. CONCLUSION: The staining and glazing of lithium disilicate increased the surface wear and bacterial adherence, and decreased biaxial flexural strength of the material. When exposed to S. mutans, surface roughness increased, and biodegradation favored bacterial adherence. |
format | Online Article Text |
id | pubmed-8864374 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-88643742022-03-02 Effect of staining on the mechanical, surface and biological properties of lithium disilicate Serrado de Pinho Barcellos, Aline Soares Miranda, Jean Amaral, Marina Araújo Alvarenga, Janaína Nogueira, Lafayette Tomomitsu Kimpara, Estevão Saudi Dent J Original Article PURPOSE: To simulate biodegradation and wear of stained and glazed CAD lithium disilicate ceramic, and evaluate their effects on the microbial adherence and mechanical and surface properties of lithium disilicate ceramic MATERIALS AND METHODS: 160 lithium disilicate ceramic discs were fabricated and divided in eight groups according to manual stain and glaze application with a fine paint brush (without stain and glaze; with stain and glaze) and aging procedures (no aging; wear at 30 N load, 1.7 Hz, 3 × 10(5) cycles; biodegradation by exposure to microcosm biofilm; biodegradation + wear; biodegradation + wear). Profilometry was performed to determine the surface roughness and the wear consequences. Biaxial flexural strength test was performed, and a Streptococcus mutans adherence test was conducted to evaluate the number of colony forming units. RESULTS: Unaged samples with and without stain and glaze presented the lowest values of surface roughness (p < 0.001), but after aging (wear, biodegradation, or both), the samples in the stain and glaze groups were rougher than those in the no stain and glaze groups (p < 0.001). The stain and glaze groups showed the highest volume of wear after aging (p = 0.04), and had the lowest flexural strength values (p < 0.01), irrespective of the aging method. The aging method did not affect the flexural strength (p = 0.06). The number of colonies forming units was higher for biodegradation + no stain and glaze, biodegradation + wear + no stain and glaze, no aging + stain and glaze, biodegradation + stain and glaze, and biodegradation + wear + stain and glaze. The lowest values were observed for no aging + no stain and glaze. CONCLUSION: The staining and glazing of lithium disilicate increased the surface wear and bacterial adherence, and decreased biaxial flexural strength of the material. When exposed to S. mutans, surface roughness increased, and biodegradation favored bacterial adherence. Elsevier 2022-02 2021-12-20 /pmc/articles/PMC8864374/ /pubmed/35241903 http://dx.doi.org/10.1016/j.sdentj.2021.12.007 Text en © 2021 The Author. Production and hosting by Elsevier B.V. on behalf of King Saud University. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Original Article Serrado de Pinho Barcellos, Aline Soares Miranda, Jean Amaral, Marina Araújo Alvarenga, Janaína Nogueira, Lafayette Tomomitsu Kimpara, Estevão Effect of staining on the mechanical, surface and biological properties of lithium disilicate |
title | Effect of staining on the mechanical, surface and biological properties of lithium disilicate |
title_full | Effect of staining on the mechanical, surface and biological properties of lithium disilicate |
title_fullStr | Effect of staining on the mechanical, surface and biological properties of lithium disilicate |
title_full_unstemmed | Effect of staining on the mechanical, surface and biological properties of lithium disilicate |
title_short | Effect of staining on the mechanical, surface and biological properties of lithium disilicate |
title_sort | effect of staining on the mechanical, surface and biological properties of lithium disilicate |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8864374/ https://www.ncbi.nlm.nih.gov/pubmed/35241903 http://dx.doi.org/10.1016/j.sdentj.2021.12.007 |
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