中国口腔种植学杂志 ›› 2023, Vol. 28 ›› Issue (2): 77-81.DOI: 10.12337/zgkqzzxzz.2023.04.002

• 论著·基础研究 • 上一篇    下一篇

3D打印镍钛植入物表面去合金化处理及细胞相容性研究

秦欣玉1, 张亮1, 陈莹莹1, 韩泽奎1, 宿玉成1,2,3, 王心彧1   

  1. 1黑龙江省口腔生物材料与临床应用重点实验室 佳木斯大学口腔医学工程实验中心 佳木斯大学附属口腔医学院 154002;
    2北京瑞城口腔医院 北京口腔种植培训中心 100032;
    3中国医学科学院北京协和医院口腔种植中心 100032
  • 收稿日期:2023-01-06 出版日期:2023-04-30 发布日期:2023-05-04
  • 通讯作者: 王心彧,Email:wxysgs123@126.com,电话:0454-8627689
  • 作者简介:秦欣玉,硕士研究生在读,研究方向:金属3D打印与表面处理;王心彧,副主任医师、硕士研究生导师,研究方向:数字化口腔种植、金属3D打印与表面处理

Study on surface dealloying treatment and cytocompatibility of 3D printed nickel-titanium implants

Qin Xinyu1, Zhang Liang1, Chen Yingying1, Han Zekui1, Su Yucheng1,2,3, Wang Xinyu1   

  1. 1Key Laboratory of Oral Biomaterials and Clinical Applications of Heilongjiang Province, Stomatology Engineering Experimental Center of Jiamusi University, School of Stomatology, Jiamusi University 154002, China;
    2Beijing Citident Hospital of Stomatology, Beijing Implant Training College (BITC), Beijing 100032, China;
    3Dental Implant Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100032, China
  • Received:2023-01-06 Online:2023-04-30 Published:2023-05-04
  • Contact: Wang Xinyu, Email:wxysgs123@126.com, Tel:0086-454-8627689

摘要: 目的 本文通过喷砂、酸蚀、去合金等生物活性处理方法研究3D打印镍钛合金的最佳改性工艺。方法 利用扫描电镜、能谱仪和接触角测量等对试件的表面结构、性能进行检测;本实验用人骨髓间充质干细胞(human bone marrow mesenchymal stem cells,hBMSCs)对不同表面的生物相容性及成骨活性进行研究。结果 去合金化表面亲水性得到了提高,能谱仪分析结果显示表面镍元素从最初的52.1 wt%降至18.6 wt%,不但能加速细胞在其表面的分化和增殖,而且能增强细胞的附着能力。结论 去合金表面构建了更加丰富的纳米级网架结构,对细胞成骨分化和功能的表达具有明显促进作用,这对提高骨结合能力和植入体的长期稳定具有重要意义。

关键词: 镍钛合金, 表面处理, 去合金化, 细胞相容性

Abstract: Objective This paper investigates the optimal modification process of 3D printed nickel-titanium alloys by bioactive treatments such as sandblasting, acid etching, and dealloying. Methods The surface structure and properties of specimens were examined by scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and contact angle measurement. In this study, bone marrow mesenchymal stem cells (hBMSCs) were used to study the biocompatibility and osteogenic activity of different surfaces. Results The hydrophilicity of the dealloying surface was improved. EDS results showed that the surface nickel elementdecreased from 52.1wt% to 18.6wt%, which not only accelerated the differentiation and proliferation of cells on the surface, but also enhanced the adhesion ability of cells. Conclusion The dealloyed surface constructed a more abundant nanoscale mesh structure, which significantly promoted the osteogenic differentiation and functional expression of cells, which was of great importance for improving the osseointegration ability and long-term stability of implants.

Key words: Nickel-titanium alloy, Surface treatment, Dealloying, Cytocompatibility