Flexural properties and finite element analysis of novel 3D-printed ceramic materials via 3D-LCM technology.

IF 1.9 4区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE Australian dental journal Pub Date : 2024-12-02 DOI:10.1111/adj.13048

Abdullah Alshamrani, Amir Fahimipour, Majed Alsarani, Ayman Ellakwa

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Abstract

Background: This study evaluates the mechanical properties of dental crown prosthodontic materials by investigating the flexural strength and stress distribution of various ceramic materials, including milled zirconia and two ceramics fabricated using LCM technology, employing Finite Element Analysis (FEA).

Methods: Seventy-five samples were divided into five groups: milled zirconia, Zirconia-210, Zirconia-230, Alumina-350 and Alumina-500. Flexural strength tests, including three-point bending, Weibull analysis and FEA, were conducted to analyse stress distribution. Data were evaluated using one-way ANOVA and Tukey's test.

Results: 3D-printed zirconia showed superior flexural strength compared to milled zirconia and alumina. Zirconia-210 had the highest flexural strength (886.35 MPa), while Alumina-350 had the lowest (424.49 MPa). Alumina-350 exhibited higher von Mises stress (25.77 MPa) than the control group (22.83 MPa), whereas Alumina-500 had the lowest stress (22.65 MPa). Zirconia models showed a slight increase in von Mises strain, while alumina models showed a decrease compared to the control.

Conclusion: Our study found that 3D-printed zirconia displayed higher flexural strength when compared to milled zirconia and alumina. Moreover, there were noticeable variations in stress levels and strain behaviours observed in the materials.

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基于3D-LCM技术的新型3d打印陶瓷材料弯曲性能及有限元分析。

背景：本研究采用有限元分析（Finite Element Analysis， FEA）的方法，研究了不同陶瓷材料（包括研磨氧化锆和两种LCM工艺制备的陶瓷）的弯曲强度和应力分布，评价了冠修复材料的力学性能。方法：将75个样品分为研磨氧化锆、氧化锆-210、氧化锆-230、氧化锆-350和氧化锆-500 5组。弯曲强度试验包括三点弯曲、威布尔分析和有限元分析，以分析应力分布。数据采用单因素方差分析和Tukey检验进行评估。结果：与氧化锆和氧化铝相比，3d打印的氧化锆具有优越的抗弯强度。氧化锆-210的抗弯强度最高（886.35 MPa），氧化铝-350的抗弯强度最低（424.49 MPa）。氧化铝-350的von Mises应力（25.77 MPa）高于对照组（22.83 MPa），而氧化铝-500的von Mises应力最低（22.65 MPa）。与对照相比，氧化锆模型的von Mises菌株略有增加，而氧化铝模型的von Mises菌株则有所减少。结论：我们的研究发现，与氧化锆和氧化铝相比，3d打印的氧化锆具有更高的抗弯强度。此外，在材料中观察到应力水平和应变行为的明显变化。

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来源期刊

Australian dental journal 医学-牙科与口腔外科

CiteScore

4.20

自引率

4.80%

发文量

审稿时长

6-12 weeks

期刊介绍： The Australian Dental Journal provides a forum for the exchange of information about new and significant research in dentistry, promoting the discipline of dentistry in Australia and throughout the world. It comprises peer-reviewed research articles as its core material, supplemented by reviews, theoretical articles, special features and commentaries.