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CC BY 4.0 · Eur J Dent 2022; 16(04): 761-767
DOI: 10.1055/s-0041-1736415
Original Article

Surface Roughness and Translucency of Various Translucent Zirconia Ceramics after Hydrothermal Aging

Chaimongkon Peampring 
1   Department of Prosthetic Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand
,
Santiphab Kengtanyakich
1   Department of Prosthetic Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand
› Institutsangaben Funding This study received its funding by the Technologies and Materials in Digital Dentistry Research Unit, Faculty of Dentistry, Prince of Songkla University.
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Abstract

Objective This study investigated the effect of hydrothermal aging on surface roughness and translucency of various translucent zirconia materials.

Materials and Methods Four types of zirconia were tested. Group 1 was translucent zirconia with no cubic structure. Group 2, 3, and 4 included cubic-containing zirconia with different amounts of cubic structures (less than 30%, 30–50%, and more than 50%, respectively). Each group contained 15 disk-shape specimens with dimensions of 15 mm in diameter and 1 mm in thickness. As-sintered surface roughness, translucency parameter, and contrast ratio were evaluated in the two different sessions, before and after aging.

Statistical Analysis Two-way repeated measures ANOVA with Bonferroni test was used to analyze statistically significant difference in those tested parameters. Phase structure before and after aging was analyzed by X-ray diffraction analysis (XRD).

Results Groups 1 and 2 showed significant increased surface roughness after aging while groups 3 and 4 showed no alteration of surface. There was no effect of aging on translucency in all groups. After aging, group 1 and 2 presented monoclinic structure (16.63 and 5.01%, respectively).

Conclusion Hydrothermal aging caused phase transformation and increasing surface roughness in group 1 and 2 but did not affect translucency in all groups.

Keywords

zirconia - hydrothermal aging - surface roughness - translucency parameter - contrast ratio


Publikationsverlauf

Artikel online veröffentlicht:
10. Dezember 2021

© 2021. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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