Preparation,Microstructure,and Properties of ZrO_(2)(3Y)/Al_(2)O_(3)Bioceramics for 3D Printing of All-ceramic Dental Implants by Vat Photopolymerization  

作　　者：Lizheng Zhang Hao Liu Haihua Yao Yong Zeng Jimin Chen 

机构地区：[1]Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing,100124,China [2]Beijing Engineering Research Center of 3D Printing for Digital Medical Health,Beijing,100124,China [3]Key Laboratory of Trans-scale Laser Manufacturing Technology,Ministry of Education,Beijing,100124,China [4]National Key Laboratory of Human Factors Engineering,Astronaut Center of China,Beijing,100094,China

出　　处：《Chinese Journal of Mechanical Engineering(Additive Manufacturing Frontiers)》2022年第2期36-49,共14页中国机械工程学报（增材制造前沿）（英文）

基　　金：supported by Beijing Municipal Science and Tech-nology Project(Grant No.KM202010005003);General Program of Science and Technology Development Project of the Beijing Municipal Education Commission.

摘　　要：Zirconia(ZrO_(2))ceramics have potential applications in the field of oral medicine owing to their desirable me-chanical properties,biocompatibility,chemical stability,and aesthetic properties.To realize clinical applications,ZrO_(2)(3Y)/Al_(2)O_(3)bioceramics for all-ceramic dental implants were prepared using vat photopolymerization 3D printing technology,and their process optimization,microstructure,mechanics,tribology,and biological proper-ties were studied.The results indicate that when the sintering temperature and holding time are 1600℃and 3 h,respectively,the density of ZrO_(2)(3Y)/Al_(2)O_(3)bioceramics reaches 98.79%,and its Vickers hardness,compressive strength,flexural strength,and fracture toughness also reach their maximum values.Furthermore,the in vitro sim-ulated oral environment wear tests showed that artificial saliva provides a lubricating effect on ZrO_(2)(3Y)/Al_(2)O_(3)bioceramics and improves wear resistance.The biosafety of ZrO_(2)(3Y)/Al_(2)O_(3)bioceramics was evaluated and ZrO_(2)(3Y)/Al_(2)O_(3)had no obvious cytotoxicity and promoted cell proliferation,growth,and adhesion.In addition,its surface has appropriate roughness and good wettability.In conclusion,ZrO_(2)(3Y)/Al_(2)O_(3)bioceramics prepared by vat photopolymerization are promising biomaterials with broad application prospects in dental restoration.

关 键 词：Vat photopolymerization BIOCERAMICS Mechanical properties BIOCOMPATIBILITY 

分 类 号：O61[理学—无机化学]