Surface and internal morphological analysis of three-dimensional titanium alloy craniomaxillofacial bone plate

doi:10.19438/j.cjoms.2019.03.004

Abstract

Abstract: PURPOSE: To study the surface and internal morphology of titanium alloy craniomaxillofacial bone plate manufactured by two kinds of three-dimensional printing techniques and compare with conventional titanium plate. METHODS: Stereolithography data (STL) of conventional titanium plates were obtained and used to fabricate bone plate by selective laser melting (SLM) and electron beam melting (EBM). Part of the titanium plate was selected for surface polishing treatment. The roughness and internal defects of the unpolished SLM titanium plate, EBM titanium plate and the polished SLM titanium plate, EBM titanium plate together with conventional titanium plate were examined. Relevant images and data were obtained for image description and further statistical analysis with SPSS13.0 software. RESULTS: The three-dimensional printing titanium plate had a large roughness. However, the surface roughness can be significantly reduced by surface polishing. After surface polishing process, the roughness declined significantly and met the standards of the national industry standards. After surface polishing process, there was no significant difference of the surface roughness between the three-dimensional printing titanium plate and the conventional bone plate. As regard to internal defect, there was no obvious defect in the three types of bone plates, which met the requirements of the national industry standards and clinical application. CONCLUSIONS: The three-dimensional printing titanium alloy craniomaxillofacial bone plate has nice surface and internal morphology, and its surface roughness and internal defects basically meet the national industry standards.

Key words: Three-dimensional printing, Craniomaxillofacial bone plate, Selective laser melting technology, Electron beam melting technology, Surface and internal morphology

CLC Number:

R782

WEI Hong-pu, YINGWANG Jun-zi, YU Jing-shuang, JIANG Teng-fei， LI Xiang，WANG Xu-dong. Surface and internal morphological analysis of three-dimensional titanium alloy craniomaxillofacial bone plate[J]. China Journal of Oral and Maxillofacial Surgery, 2019, 17(3): 210-215.

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