Cargando…

Effect of Cooling Rate on Mechanical Properties, Translucency, Opalescence, and Light Transmission Properties of Monolithic 4Y-TZP during Glazing

A standard cooling rate has not been established for glazing; therefore, the effects of the cooling rate on the properties of zirconia need to be evaluated to predict outcomes in clinical practice. 4Y-TZP glazed at three different cooling rates was analyzed to estimate the effect of cooling rate dur...

Descripción completa

Detalles Bibliográficos
Autores principales: Jeong, Ji-In, Shin, Hye-Jeong, Kwon, Yong Hoon, Seol, Hyo-Joung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9228759/
https://www.ncbi.nlm.nih.gov/pubmed/35744423
http://dx.doi.org/10.3390/ma15124357
_version_ 1784734559836831744
author Jeong, Ji-In
Shin, Hye-Jeong
Kwon, Yong Hoon
Seol, Hyo-Joung
author_facet Jeong, Ji-In
Shin, Hye-Jeong
Kwon, Yong Hoon
Seol, Hyo-Joung
author_sort Jeong, Ji-In
collection PubMed
description A standard cooling rate has not been established for glazing; therefore, the effects of the cooling rate on the properties of zirconia need to be evaluated to predict outcomes in clinical practice. 4Y-TZP glazed at three different cooling rates was analyzed to estimate the effect of cooling rate during glazing on the mechanical and optical properties. Hardness tests, field-emission scanning electron microscopy analysis, X-ray diffraction analysis, flexural strength measurement, and optical property evaluations were performed. When 4Y-TZP was glazed at a higher cooling rate (Cooling-1) than the normal cooling rate (Cooling-2), there was no significant difference in grain size, flexural strength, average transmittance, and translucency parameters. The hardness was slightly reduced. The opalescence parameter was reduced for the 2.03 mm thick specimens. When 4Y-TZP was glazed at a lower cooling rate (Cooling-3) than the normal cooling rate, there was no significant difference in hardness, grain size, flexural strength, and translucency parameters. In addition, the average transmittance and opalescence parameters were slightly reduced for the 0.52 and 2.03 mm specimens, respectively. The effects of the cooling rate during glazing on the mechanical and optical properties of 4Y-TZP appear to be minimal and clinically insignificant. Therefore, even if the cooling rate cannot be strictly controlled during glazing, the clinical outcomes will not be significantly affected.
format Online
Article
Text
id pubmed-9228759
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-92287592022-06-25 Effect of Cooling Rate on Mechanical Properties, Translucency, Opalescence, and Light Transmission Properties of Monolithic 4Y-TZP during Glazing Jeong, Ji-In Shin, Hye-Jeong Kwon, Yong Hoon Seol, Hyo-Joung Materials (Basel) Article A standard cooling rate has not been established for glazing; therefore, the effects of the cooling rate on the properties of zirconia need to be evaluated to predict outcomes in clinical practice. 4Y-TZP glazed at three different cooling rates was analyzed to estimate the effect of cooling rate during glazing on the mechanical and optical properties. Hardness tests, field-emission scanning electron microscopy analysis, X-ray diffraction analysis, flexural strength measurement, and optical property evaluations were performed. When 4Y-TZP was glazed at a higher cooling rate (Cooling-1) than the normal cooling rate (Cooling-2), there was no significant difference in grain size, flexural strength, average transmittance, and translucency parameters. The hardness was slightly reduced. The opalescence parameter was reduced for the 2.03 mm thick specimens. When 4Y-TZP was glazed at a lower cooling rate (Cooling-3) than the normal cooling rate, there was no significant difference in hardness, grain size, flexural strength, and translucency parameters. In addition, the average transmittance and opalescence parameters were slightly reduced for the 0.52 and 2.03 mm specimens, respectively. The effects of the cooling rate during glazing on the mechanical and optical properties of 4Y-TZP appear to be minimal and clinically insignificant. Therefore, even if the cooling rate cannot be strictly controlled during glazing, the clinical outcomes will not be significantly affected. MDPI 2022-06-20 /pmc/articles/PMC9228759/ /pubmed/35744423 http://dx.doi.org/10.3390/ma15124357 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
Jeong, Ji-In
Shin, Hye-Jeong
Kwon, Yong Hoon
Seol, Hyo-Joung
Effect of Cooling Rate on Mechanical Properties, Translucency, Opalescence, and Light Transmission Properties of Monolithic 4Y-TZP during Glazing
title Effect of Cooling Rate on Mechanical Properties, Translucency, Opalescence, and Light Transmission Properties of Monolithic 4Y-TZP during Glazing
title_full Effect of Cooling Rate on Mechanical Properties, Translucency, Opalescence, and Light Transmission Properties of Monolithic 4Y-TZP during Glazing
title_fullStr Effect of Cooling Rate on Mechanical Properties, Translucency, Opalescence, and Light Transmission Properties of Monolithic 4Y-TZP during Glazing
title_full_unstemmed Effect of Cooling Rate on Mechanical Properties, Translucency, Opalescence, and Light Transmission Properties of Monolithic 4Y-TZP during Glazing
title_short Effect of Cooling Rate on Mechanical Properties, Translucency, Opalescence, and Light Transmission Properties of Monolithic 4Y-TZP during Glazing
title_sort effect of cooling rate on mechanical properties, translucency, opalescence, and light transmission properties of monolithic 4y-tzp during glazing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9228759/
https://www.ncbi.nlm.nih.gov/pubmed/35744423
http://dx.doi.org/10.3390/ma15124357
work_keys_str_mv AT jeongjiin effectofcoolingrateonmechanicalpropertiestranslucencyopalescenceandlighttransmissionpropertiesofmonolithic4ytzpduringglazing
AT shinhyejeong effectofcoolingrateonmechanicalpropertiestranslucencyopalescenceandlighttransmissionpropertiesofmonolithic4ytzpduringglazing
AT kwonyonghoon effectofcoolingrateonmechanicalpropertiestranslucencyopalescenceandlighttransmissionpropertiesofmonolithic4ytzpduringglazing
AT seolhyojoung effectofcoolingrateonmechanicalpropertiestranslucencyopalescenceandlighttransmissionpropertiesofmonolithic4ytzpduringglazing