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Bio-Design and Manufacturing  2018 Vol.1 No.2 P.146-156

http://doi.org/10.1007/s42242-018-0010-5


Three-dimensional printing of β-Tricalcium phosphate/calcium silicate composite scaffolds for bone tissue engineering


Author(s):  Yifan Dong, Haibo Duan, Naru Zhao, Xiao Liu, Yijuan Ma, Xuetao Shi

Affiliation(s):  School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China; more

Corresponding email(s):   nrzhao@scut.edu.cn

Key Words:  3D printing β β -Tricalcium phosphate/calcium Osteogenesis differentiation Tissue regeneration


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Yifan Dong,Haibo Duan,Naru Zhao,Xiao Liu,Yijuan Ma,Xuetao Shi. Three-dimensional printing of β-Tricalcium phosphate/calcium silicate composite scaffolds for bone tissue engineering [J]. Journal of Zhejiang University Science D, 2018, 1(2): 146-156.

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author="Yifan Dong,Haibo Duan,Naru Zhao,Xiao Liu,Yijuan Ma,Xuetao Shi",
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doi="10.1007/s42242-018-0010-5"
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%A Yifan Dong
%A Haibo Duan
%A Naru Zhao
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A1 - Yifan Dong
A1 - Haibo Duan
A1 - Naru Zhao
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A1 - Yijuan Ma
A1 - Xuetao Shi
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Abstract: 
Bioactive scaffolds with interconnected porous structures are essential for guiding cell growth and new bone formation. In this work, we successfully fabricated three-dimensional (3D) porous β β -tricalcium phosphate ( β β -TCP)/calcium silicate (CS) composite scaffolds with different ratios by 3D printing technique and further investigated the physiochemical properties, in vitro apatite mineralization properties and degradability of porous β β -TCP/CS scaffolds. Moreover, a series of in vitro cell experiments including the attachment, proliferation and osteogenic differentiation of mouse bone marrow stromal cells were conducted to testify their biological performances. The results showed that 3D printed β β -TCP/CS scaffolds possessed of controllable internal porous structures and external shape. Furthermore, the introduction of CS decreased the shrinkage of scaffolds and improved the in vitro apatite formation activity and degradation rate. Meanwhile, compared with pure β β -TCP scaffold, the β β -TCP/CS composite scaffolds were more conducive to promote cell adhesion, spread and osteogenesis differentiation. However, when the content of CS was increased to 45%, the ions dissolution rate of the composite scaffolds was so high that leaded to the increase in pH value, which inhibited the proliferation of cells. Our results suggested that the introduction of appropriate CS into β β -TCP bioceramic is an effective strategy to prepare bioactive 3D printed bioceramic scaffolds for hard tissue regeneration.

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