Digital light processing of rare earth oxide doped natural color zirconia denture for customized aesthetic properties

IF 2.9 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics Pub Date : 2024-09-05 DOI:10.1016/j.oceram.2024.100670

Shuhao Qi , Tengkuo Sun , Mi Cui , Hongyan Li , Yanlong Chen , Tao Zhou , Qin Lian , Changquan Shi , Dichen Li

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Abstract

Zirconia is a ceramic material with fine properties for dental restorations, but the color of zirconia does not match natural teeth color. In this study, the effect of zirconia doped with different rare earth oxides on the color of denture manufactured by Digital Light Processing (DLP) method was investigated. Experimental results showed that the color of the ceramic parts after sintering could cover Vita 3D colorimetric plate for natural teeth, and the color accuracy was within 1.5 NBS. Meanwhile, the forming accuracy of the denture reached 67.7 μm, and the three-point bending strength was 520.32 ± 35.44–649.10 ± 42.31 MPa, which met the requirements of triple crown in dentistry. This study establishes a method to achieve colors of natural teeth using DLP technology, and the results of this study have important leading implications for the use of additive manufacturing technology to fabricate natural-color ceramic dentures for dental applications.

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对掺杂稀土氧化物的天然色氧化锆义齿进行数字光处理，以定制美学特性

氧化锆是一种性能优良的牙科修复陶瓷材料，但氧化锆的颜色与天然牙的颜色不一致。本研究探讨了掺杂不同稀土氧化物的氧化锆对数字光处理（DLP）方法制造的义齿颜色的影响。实验结果表明，陶瓷部件烧结后的颜色可以覆盖天然牙的 Vita 3D 色度板，颜色精度在 1.5 NBS 以内。同时，义齿的成型精度达到了 67.7 μm，三点抗弯强度为 520.32 ± 35.44-649.10 ± 42.31 MPa，达到了牙科三冠的要求。该研究建立了一种利用 DLP 技术实现天然牙颜色的方法，研究结果对利用增材制造技术制造牙科用天然色陶瓷义齿具有重要的引领意义。

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来源期刊

Open Ceramics Materials Science-Materials Chemistry

CiteScore

4.20

自引率

0.00%

发文量

102

审稿时长

67 days