中国组织工程研究

中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (38): 7047-7052.doi: 10.3969/j.issn.2095-4344.2012.38.004

• 纳米生物材料 nanobiomaterials • 上一篇    下一篇

纳米Ag/TiO2涂层托槽的研制及力学性能

张 晟1，麦理想2，柳大烈3，章锦才1   

  1. 1广东省口腔医院•南方医科大学附属口腔医院正畸科，广东省广州市 510280
    2中山大学光华口腔医学院•附属口腔医院正畸科，广东省广州市 510055
    3南方医科大学珠江医院整形美容科，广东省广州市 510200
  • 收稿日期:2012-05-05 修回日期:2012-05-22 出版日期:2012-09-16 发布日期:2012-09-16
  • 通讯作者: 章锦才，广东省口腔医院?南方医科大学附属口腔医院，广东省广州市 510280 jincaizhang@ live.cn
  • 作者简介:张晟☆，女，1983年生，安徽省合肥市人，汉族，南方医科大学在读博士，医师，主要从事整形外科学研究。 65071863@ qq.com

Development of a nanometer Ag/TiO2 coated bracket and its mechanical properties

Zhang Sheng1, Mai Li-xiang2, Liu Da-lie3, Zhang Jin-cai1   

  1. 1Department of Orthodontics, Guangdong Provincial Stomatological Hospital & the Affiliated Stomatology Hospital of Southern Medical University, Guangzhou 510280, Guangdong Province, China
    2Department of Orthodontics, Guanghua Stomatological College & the Affiliated Stomatology Hospital of Sun Yat-sen University, Guangzhou 510055, Guangdong Province, China
    3Department of Plastic Surgery, Zhujiang Hospital of Southern Medical University, Guangzhou 510200, Guangdong Province, China
  • Received:2012-05-05 Revised:2012-05-22 Online:2012-09-16 Published:2012-09-16
  • Contact: Zhang Jin-cai, Department of Orthodontics, Guangdong Provincial Stomatological Hospital & the Affiliated Stomatology Hospital of Southern Medical University, Guangzhou 510280, Guangdong Province, China jincaizhang@live.cn
  • About author:Zhang Sheng☆, Studying for doctorate, Physician, Department of Orthodontics, Guangdong Provincial Stomatological Hospital & the Affiliated Stomatology Hospital of Southern Medical University, Guangzhou 510280, Guangdong Province, China 65071863@qq.com

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摘要：

背景：前期实验发现纳米Ag可以原子态沉积于纳米TiO2涂层表面，增强涂层的可见光催化抗菌性能。
目的：研制纳米Ag/TiO2涂层托槽，并分析其力学性能。
方法：使用溶胶-凝胶法制备不同退火温度下的纳米Ag/TiO2涂层托槽，在扫描电镜下观察纳米Ag/TiO2涂层托槽的表面形貌；测量普通金属托槽、纳米TiO2涂层托槽和各组纳米Ag/TiO2涂层托槽的表面粗糙度；采用划痕实验法检测纳米TiO2涂层和各组纳米Ag/TiO2涂层与基体托槽的结合强度。
结果与结论：纳米Ag/TiO2涂层厚度约120 nm，为具有严整组织结构的纳米颗粒膜，表面平整、光滑、光洁度高，并可见Ag颗粒沉积在涂层上。纳米TiO2涂层托槽和各组纳米Ag/TiO2涂层托槽表面粗糙度与普通商业用托槽差别无差异(P > 0.05)；纳米TiO2涂层、120，200，300 ℃退火温度纳米Ag/TiO2涂层与基体托槽的结合强度分别为1.18，1.16，1.12，1.26 kg。表明研制的纳米Ag/TiO2涂层托槽具有良好的力学性能，可以满足口腔正畸临床需要。

关键词: 正畸托槽, 纳米TiO2, 纳米银, 表面粗糙度, 结合强度, 生物材料

Abstract:

BACKGROUND: In our prophase study, Ag can be deposited on TiO2 films, which can enhance the antibacterial effect of TiO2 coated films.
OBJECTIVE: To develop a nanometer Ag/TiO2 coated bracket and to study its mechanical properties.
METHODS: The nanometer Ag/TiO2 coated bracket was prepared using sol-gel method at different annealing temperatures. Scanning electron microscope was used to study the surface morphology of Ag/TiO2 coated bracket. The surface roughness of metal bracket, nanometer TiO2 coated bracket and nanometer Ag/TiO2 coated bracket was measured. The combination intensity of TiO2 and Ag/TiO2 coatings with brackets was measured by scratch test.
RESULTS AND CONCLUSION: Nanometer Ag/TiO2 film was 120 nm in deepness, and it was a nanoparticle film with a thorough tissue structure. Ag particles were visibly deposited on the film surface that was flat, smooth, and highly polished. There were no significant differences among the surface roughness of nanometer TiO2 coated brackets, nanometer Ag/TiO2 coated brackets and brackets used commercially (P > 0. 05). The combination intensities of nanometer TiO2 and Ag/TiO2 coatings with brackets at annealing temperatures of 120, 200 and 300 ℃ were 1.18, 1.16, 1.12 and 1.26 kg, respectively. These findings indicated that nanometer Ag/TiO2 coated bracket was developed successfully and it had good mechanical properties that could meet the clinical demand of orthodontics.

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