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Influence of Additive Firing on the Surface Characteristics, Streptococcus mutans Viability and Optical Properties of Zirconia

The purpose of this study was to observe whether the repetitive firing of dental zirconia caused changes in surface characteristics, S. mutans viability, and optical properties of zirconia. Dental zirconia blocks were sintered and randomly distributed into seven experimental groups: F0–F6. Except fo...

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Autores principales: Moon, Wonjoon, Park, Joo Hyang, Lee, Han-Ah, Lim, Bum-Soon, Chung, Shin Hye
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7962646/
https://www.ncbi.nlm.nih.gov/pubmed/33800321
http://dx.doi.org/10.3390/ma14051286
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author Moon, Wonjoon
Park, Joo Hyang
Lee, Han-Ah
Lim, Bum-Soon
Chung, Shin Hye
author_facet Moon, Wonjoon
Park, Joo Hyang
Lee, Han-Ah
Lim, Bum-Soon
Chung, Shin Hye
author_sort Moon, Wonjoon
collection PubMed
description The purpose of this study was to observe whether the repetitive firing of dental zirconia caused changes in surface characteristics, S. mutans viability, and optical properties of zirconia. Dental zirconia blocks were sintered and randomly distributed into seven experimental groups: F0–F6. Except for F0, which only went through sintering, the additive firing was performed in order for F1–F6. Surface roughness, contact angle, S. mutans viability by fluorescence, and translucency parameter were measured. They were all highest after sintering (F0) and decreased after additive firings (F1–F6). The additive firing of zirconia after sintering decreased surface roughness, contact angle, S. mutans viability, and translucency. The number of firings after the first firing was not found to be critical in surface characteristics, S. mutans viability, and optical property. Changes in surface characteristics might have led to a decrease in S. mutans viability, while the change of translucency was not clinically significant. This implies that additive firing may prevent secondary caries under zirconia restorations, not compromising esthetic appearance.
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spelling pubmed-79626462021-03-17 Influence of Additive Firing on the Surface Characteristics, Streptococcus mutans Viability and Optical Properties of Zirconia Moon, Wonjoon Park, Joo Hyang Lee, Han-Ah Lim, Bum-Soon Chung, Shin Hye Materials (Basel) Article The purpose of this study was to observe whether the repetitive firing of dental zirconia caused changes in surface characteristics, S. mutans viability, and optical properties of zirconia. Dental zirconia blocks were sintered and randomly distributed into seven experimental groups: F0–F6. Except for F0, which only went through sintering, the additive firing was performed in order for F1–F6. Surface roughness, contact angle, S. mutans viability by fluorescence, and translucency parameter were measured. They were all highest after sintering (F0) and decreased after additive firings (F1–F6). The additive firing of zirconia after sintering decreased surface roughness, contact angle, S. mutans viability, and translucency. The number of firings after the first firing was not found to be critical in surface characteristics, S. mutans viability, and optical property. Changes in surface characteristics might have led to a decrease in S. mutans viability, while the change of translucency was not clinically significant. This implies that additive firing may prevent secondary caries under zirconia restorations, not compromising esthetic appearance. MDPI 2021-03-08 /pmc/articles/PMC7962646/ /pubmed/33800321 http://dx.doi.org/10.3390/ma14051286 Text en © 2021 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Moon, Wonjoon
Park, Joo Hyang
Lee, Han-Ah
Lim, Bum-Soon
Chung, Shin Hye
Influence of Additive Firing on the Surface Characteristics, Streptococcus mutans Viability and Optical Properties of Zirconia
title Influence of Additive Firing on the Surface Characteristics, Streptococcus mutans Viability and Optical Properties of Zirconia
title_full Influence of Additive Firing on the Surface Characteristics, Streptococcus mutans Viability and Optical Properties of Zirconia
title_fullStr Influence of Additive Firing on the Surface Characteristics, Streptococcus mutans Viability and Optical Properties of Zirconia
title_full_unstemmed Influence of Additive Firing on the Surface Characteristics, Streptococcus mutans Viability and Optical Properties of Zirconia
title_short Influence of Additive Firing on the Surface Characteristics, Streptococcus mutans Viability and Optical Properties of Zirconia
title_sort influence of additive firing on the surface characteristics, streptococcus mutans viability and optical properties of zirconia
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7962646/
https://www.ncbi.nlm.nih.gov/pubmed/33800321
http://dx.doi.org/10.3390/ma14051286
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