Fabrication of Zirconia Ceramic Dental Crowns by Digital Light Processing: Effects of the Process on Physical Properties and Microstructure.

IF 2.3 4区工程技术 Q3 ENGINEERING, MANUFACTURING

3D Printing and Additive Manufacturing Pub Date : 2024-06-18 eCollection Date: 2024-06-01 DOI:10.1089/3dp.2022.0342

Faqiang Zhang, Yangbo Zuo, Kesheng Zhang, Hairui Gao, Shupei Zhang, Haishen Chen, Guangwang Liu, Xia Jin, Jingzhou Yang

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引用次数: 0

Abstract

Highly dense zirconia ceramic dental crowns were successfully fabricated by a digital light processing (DLP) additive manufacturing technique. The effects of slurry solid content and exposure density on printing accuracy, curing depth, shrinkage rate, and relative density were evaluated. For the slurry with a solid content of 80 wt%, the curing depth achieved 40 μm with minimal overgrowth under an exposure intensity of 16.5 mW/cm². Solid content and sintering temperature had remarkable effects on physical properties and microstructure. Higher solid content resulted in better structural integrity, higher relative density, and denser microstructure. Compressive strength, Vickers hardness, fracture toughness, and wear resistance significantly increase with lifting solid content, reaching values of 677 MPa, 12.62 GPa, 6.3 MPa·m^1/2, and 1.5 mg/min, respectively, for 1500°C sintered zirconia dental crowns printed from a slurry with 80 wt% solid content. DLP is deemed a promising technology for the fabrication of zirconia ceramic dental crowns for tooth repair.

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数字光处理制备氧化锆陶瓷牙冠:工艺对物理性能和微观结构的影响

利用数字光处理（DLP）增材制造技术成功制造了高密度氧化锆陶瓷牙冠。评估了浆料固含量和曝光密度对打印精度、固化深度、收缩率和相对密度的影响。对于固含量为 80 wt% 的浆料，在 16.5 mW/cm2 的曝光强度下，固化深度达到 40 μm，且过度生长最小。固含量和烧结温度对物理性质和微观结构有显著影响。固体含量越高，结构完整性越好，相对密度越高，微观结构越致密。随着固体含量的提高，抗压强度、维氏硬度、断裂韧性和耐磨性也显著增加，对于用固体含量为 80 wt% 的浆料在 1500°C 下烧结的氧化锆牙冠，其抗压强度、维氏硬度、断裂韧性和耐磨性分别达到了 677 MPa、12.62 GPa、6.3 MPa-m1/2 和 1.5 mg/min。DLP 被认为是制造用于牙齿修复的氧化锆陶瓷牙冠的一项前景广阔的技术。

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来源期刊

3D Printing and Additive Manufacturing Materials Science-Materials Science (miscellaneous)

CiteScore

6.00

自引率

6.50%

发文量

126

期刊介绍： 3D Printing and Additive Manufacturing is a peer-reviewed journal that provides a forum for world-class research in additive manufacturing and related technologies. The Journal explores emerging challenges and opportunities ranging from new developments of processes and materials, to new simulation and design tools, and informative applications and case studies. Novel applications in new areas, such as medicine, education, bio-printing, food printing, art and architecture, are also encouraged. The Journal addresses the important questions surrounding this powerful and growing field, including issues in policy and law, intellectual property, data standards, safety and liability, environmental impact, social, economic, and humanitarian implications, and emerging business models at the industrial and consumer scales.