Optical properties evaluation of rapid sintered translucent zirconia with two dental colorimeters

doi:10.1016/j.jds.2021.05.014

中山醫學大學機構典藏 CSMUIR > 中山醫學大學研究成果 > 期刊論文 > Item 310902500/23289

Please use this identifier to cite or link to this item: https://ir.csmu.edu.tw:8080/ir/handle/310902500/23289

Title:	Optical properties evaluation of rapid sintered translucent zirconia with two dental colorimeters
Authors:	Liu, YC;Lin, TH;Lin, YY;Hu, SW;Liu, JF;Yang, CC;Yan, M
Keywords:	Zirconia ceramics;Rapid sintering;Translucency;Color difference;Colorimeter
Date:	2021
Issue Date:	2022-08-05T09:34:51Z (UTC)
Publisher:	ELSEVIER TAIWAN
ISSN:	1991-7902
Abstract:	Background/purpose: The efficient rapid sintering technique has employed to dental zirconia ceramics for shortening the fabrication time of zirconia restorations. The purpose was to compare the optical properties of two generations of rapid sintered translucent zirconia using two dental colorimeters. Materials and methods: Two generations of translucent zirconia ceramics, 3 mol% yttriatetragonal zirconia polycrystal (3Y-TZP): Copran Zr-i Ultra-T (UT) and Cercon HT (HT), and 5 mol% yttria-tetragonal zirconia polycrystal (5Y-TZP): Cercon xt (XT), of different thicknesses (0.5, 0.8, and 1.2 mm; n Z 5) underwent rapid sintering (RS) or conventional sintering (CS). The CIELAB values were measured on the white and black backgrounds, respectively, by digital colorimeters, shadepilot, DeguDent (DD) and Easyshade V, Vita (Vita). Translucency parameter (TP), color difference (DE), surface morphology, and surface roughness were evaluated. Results: RS resulted in reduced lightness, except in the XT group. The chromaticity increased slightly after RS. Translucency decreased with increasing material thickness. SE values differed between both sintering processes but were clinically acceptable (SE < 5). Grain size of XT decreased after RS. RS did not affect the surface roughness. Conclusion: RS is a feasible method for shortening the manufacturing time of zirconia restora-tions. A significant difference in TP value was only in the XT group between both sintering methods as measured on DD. Color differences in rapid sintered translucent zirconia materials are imperceptible and acceptable. The specimen thickness affected more in the TP values of Vita than DD. DD has higher sensitivity to translucency and color compared with Vita. (c) 2021 Association for Dental Sciences of the Republic of China. Publishing services by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons. org/licenses/by-nc-nd/4.0/).
URI:	http://dx.doi.org/10.1016/j.jds.2021.05.014 https://www.webofscience.com/wos/woscc/full-record/WOS:000738497700021 https://ir.csmu.edu.tw:8080/handle/310902500/23289
Relation:	JOURNAL OF DENTAL SCIENCES ,2022,v17,issue 1, P155-161
Appears in Collections:	[中山醫學大學研究成果] 期刊論文

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	220	View/Open

Loading...