Design and Fabrication of Complex-Shaped Ceramic Bone Implants via 3D Printing Based on Laser Stereolithography

3D printing allows the fabrication of ceramic implants, making a personalized approach to patients’ treatment a reality. In this work, we have tested the applicability of the Function Representation (FRep) method for geometric simulation of implants with complex cellular microstructure. For this stu...

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Bibliographic Details
Published in:Applied sciences 2020-10, Vol.10 (20), p.7138
Main Authors: Safonov, Alexander, Maltsev, Evgenii, Chugunov, Svyatoslav, Tikhonov, Andrey, Konev, Stepan, Evlashin, Stanislav, Popov, Dmitry, Pasko, Alexander, Akhatov, Iskander
Format: Article
Language:English
Subjects:
3-D printers
3D printing
Aluminum oxide
Bone implants
Bones
bones implants
Cancellous bone
Cell size
Cellular structure
Ceramic materials
Ceramics
Compression
Compression tests
Design
Fabrication
Function Representation (FRep) method
Geometry
Hole defects
Lasers
Lithography
Mechanical properties
Methods
Microstructure
Pore size
Rapid prototyping
Raw materials
Stereolithography
Transplants & implants
Unit cell
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Summary:3D printing allows the fabrication of ceramic implants, making a personalized approach to patients’ treatment a reality. In this work, we have tested the applicability of the Function Representation (FRep) method for geometric simulation of implants with complex cellular microstructure. For this study, we have built several parametric 3D models of 4 mm diameter cylindrical bone implant specimens of four different types of cellular structure. The 9.5 mm long implants are designed to fill hole defects in the trabecular bone. Specimens of designed ceramic implants were fabricated at a Ceramaker 900 stereolithographic 3D printer, using a commercial 3D Mix alumina (Al2O3) ceramic paste. Then, a single-axis compression test was performed on fabricated specimens. According to the test results, the maximum load for tested specimens constituted from 93.0 to 817.5 N, depending on the size of the unit cell and the thickness of the ribs. This demonstrates the possibility of fabricating implants for a wide range of loads, making the choice of the right structure for each patient much easier.
ISSN:2076-3417
2076-3417
DOI:10.3390/app10207138