Surface characteristics and mechanical properties of titanium implant modified by selective laser melting technology

doi:10.12337/zgkqzzxzz.2022.03.006

Chinese Journal of Oral Implantology ›› 2022, Vol. 27 ›› Issue (2): 82-86.DOI: 10.12337/zgkqzzxzz.2022.03.006

• Original Article·Basic Research • Previous Articles Next Articles

Surface characteristics and mechanical properties of titanium implant modified by selective laser melting technology

Wang Xuan¹, Duan Yansheng¹, Song Shuang², Wang Shuyan¹, Zhao Guoqiang¹, Zhao Wenshuang¹, Yang Rui¹, Tian Huan¹, Liu Xiangdong¹, Chen Xutao¹, Ding Feng¹, Song Yingliang¹, Zhang Sijia¹

¹State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases&Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Dental Implantology, School of Stomatology, the Fourth Military Medical University, Xi'an 710032, China;
²Peking University School and Hospital of Stomatology, Beijing 100081, China

Received:2021-12-01 Online:2022-04-30 Published:2022-05-07
Contact: Song Yingliang, Email: songyingliang@163.com, Tel: 0086-29-84776454; Zhang Sijia, Email: 2380857628@qq.com, Tel: 0086-29-84776454
Supported by:
China Postdoctoral Science Foundation（2019M653968）; National Natural Science Foundation of China（81771107, 82001022）

Abstract

Abstract: Objective To establish the surface of titanium implants treated by SLM, and explore the relevant mechanisms that may improve the osseointegration level of implants through in vitro experiments. Methods Implant and titanium sheet samples were prepared and divided into SLM group, sand blasting and acid etching (SLA) group and control group. Surface microtopography was observed, roughness was measured, and mechanical properties were evaluated. HGF-C339 cells was used to observe the morphology, growth and proliferation of surface cells. Results The surface of SLM group was honeycomb, with irregular pores, rich layers and peak-valley shape. roughness of SLM surface was the highest, the mean Ra value was（0.908±0.015）μm, the mean Rz value was（1.589±0.160.3）μm. SLM surface had suitable mechanical strength, the mean yield strengths were（110±2.5）MPa. SLM surface biosafety was well evaluated, and the adhesion growth of HGF-C339 cells was normal. Conclusion The surface of titanium implants treated with SLM has good bio-safety, high surface roughness, and suitable mechanical strength. The surface of titanium implants treated with SLM could be a new approach for surface treatment.

Key words: Selective laser melting, Implant, Surface treatment

Wang Xuan, Duan Yansheng, Song Shuang, Wang Shuyan, Zhao Guoqiang, Zhao Wenshuang, Yang Rui, Tian Huan, Liu Xiangdong, Chen Xutao, Ding Feng, Song Yingliang, Zhang Sijia. Surface characteristics and mechanical properties of titanium implant modified by selective laser melting technology[J]. Chinese Journal of Oral Implantology, 2022, 27(2): 82-86.

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Surface characteristics and mechanical properties of titanium implant modified by selective laser melting technology

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