The effects of artificial aging on high translucent zirconia
Zirconia is known for its high strength but lacking translucency. Recently, a new type of high translucent zirconia, 5 mol% yttria partially stabilized zirconia (5Y-PSZ), with a larger fraction of cubic zirconia phase has become commercially available. However, the resistance to aging of these comme...
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doaj-71edd526d6be4eb79407e18ad5aa601e2020-11-24T21:39:38ZengTaylor & Francis GroupBiomaterial Investigations in Dentistry2641-52752019-12-0161546010.1080/26415275.2019.16842011684201The effects of artificial aging on high translucent zirconiaWen Kou0Klas Garbrielsson1Adrian Borhani2Markus Carlborg3Margareta Molin Thorén4Umeå UniversityUmeå UniversityUmeå UniversityUmeå UniversityUmeå UniversityZirconia is known for its high strength but lacking translucency. Recently, a new type of high translucent zirconia, 5 mol% yttria partially stabilized zirconia (5Y-PSZ), with a larger fraction of cubic zirconia phase has become commercially available. However, the resistance to aging of these commercially available zirconia materials is not yet fully established. Purpose: The aim of the present study was to analyze the effects of artificial aging on surface roughness, transparency, phase transformation and biaxial flexural strength of two 5Y-PSZ products, DD cubeX2 and Prettau Anterior. Materials and methods: The artificial aging was performed in an autoclave under 2 bars of pressure at 134 °C for 10 hours, which is estimated to correspond to 30–40 years in vivo. Artificial aging for 10 hours had no significant effect on surface roughness, transparency, or phase transformation for either of the tested materials. Results: DD cubeX2 had higher mean flexural strength than Prettau Anterior both before and after artificial aging for 10 hours (p < .05). DD cubeX2 showed, however, a significant reduction in flexural strength after artificial aging (p < .05), whereas Prettau Anterior showed a slight increase in flexural strength after artificial aging but not at a significant level. Conclusion: Within the limitation of the present study, both DD cubeX2 and Prettau Anterior seems to be relatively resistant to aging. However, a wider range of measured flexural strength indicated that Prettau Anterior probably is a less stable material than DD cubeX2, which also means that the flexural strength of DD cubeX2 could be more predictable.http://dx.doi.org/10.1080/26415275.2019.1684201high translucent zirconia5y-pszagingbiaxial flexural strengthtransparencysurface roughness |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wen Kou Klas Garbrielsson Adrian Borhani Markus Carlborg Margareta Molin Thorén |
spellingShingle |
Wen Kou Klas Garbrielsson Adrian Borhani Markus Carlborg Margareta Molin Thorén The effects of artificial aging on high translucent zirconia Biomaterial Investigations in Dentistry high translucent zirconia 5y-psz aging biaxial flexural strength transparency surface roughness |
author_facet |
Wen Kou Klas Garbrielsson Adrian Borhani Markus Carlborg Margareta Molin Thorén |
author_sort |
Wen Kou |
title |
The effects of artificial aging on high translucent zirconia |
title_short |
The effects of artificial aging on high translucent zirconia |
title_full |
The effects of artificial aging on high translucent zirconia |
title_fullStr |
The effects of artificial aging on high translucent zirconia |
title_full_unstemmed |
The effects of artificial aging on high translucent zirconia |
title_sort |
effects of artificial aging on high translucent zirconia |
publisher |
Taylor & Francis Group |
series |
Biomaterial Investigations in Dentistry |
issn |
2641-5275 |
publishDate |
2019-12-01 |
description |
Zirconia is known for its high strength but lacking translucency. Recently, a new type of high translucent zirconia, 5 mol% yttria partially stabilized zirconia (5Y-PSZ), with a larger fraction of cubic zirconia phase has become commercially available. However, the resistance to aging of these commercially available zirconia materials is not yet fully established. Purpose: The aim of the present study was to analyze the effects of artificial aging on surface roughness, transparency, phase transformation and biaxial flexural strength of two 5Y-PSZ products, DD cubeX2 and Prettau Anterior. Materials and methods: The artificial aging was performed in an autoclave under 2 bars of pressure at 134 °C for 10 hours, which is estimated to correspond to 30–40 years in vivo. Artificial aging for 10 hours had no significant effect on surface roughness, transparency, or phase transformation for either of the tested materials. Results: DD cubeX2 had higher mean flexural strength than Prettau Anterior both before and after artificial aging for 10 hours (p < .05). DD cubeX2 showed, however, a significant reduction in flexural strength after artificial aging (p < .05), whereas Prettau Anterior showed a slight increase in flexural strength after artificial aging but not at a significant level. Conclusion: Within the limitation of the present study, both DD cubeX2 and Prettau Anterior seems to be relatively resistant to aging. However, a wider range of measured flexural strength indicated that Prettau Anterior probably is a less stable material than DD cubeX2, which also means that the flexural strength of DD cubeX2 could be more predictable. |
topic |
high translucent zirconia 5y-psz aging biaxial flexural strength transparency surface roughness |
url |
http://dx.doi.org/10.1080/26415275.2019.1684201 |
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