中国实用口腔科杂志

中国实用口腔科杂志 ›› 2010, Vol. 3 ›› Issue (06): 339-344.

• 论著 • 上一篇    下一篇

改良热分解法制备新型钛酸钙涂层的实验研究

  

  1. 1. 岡山大学大学院医歯药学综合研究科口腔病理学分野，日本  岡山  700-8525；2. 本山学园国际岡山歯科卫生专门学校口腔健康科学中心，日本  岡山  700-8525；3. 中国医科大学口腔医学院种植中心，沈阳  110002
  • 收稿日期:2010-04-10 修回日期:2010-05-30 出版日期:2010-06-15 发布日期:2010-07-02

  • Received:2010-04-10 Revised:2010-05-30 Online:2010-06-15 Published:2010-07-02

摘要：

目的    研究改良热分解法制备的钛金属表面钛酸钙复合涂层材料的特性。方法   应用改良热分解法在钛金属表面制备钛酸钙复合涂层材料，该涂层由含有无定形碳的钛酸钙（CaTiO3-αC）与羟基磷灰石（HA）组成。实验中通过控制钙磷比（Ca／P）、钙钛比（Ca／Ti）、烧结温度和烧结速率，使CaTiO3颗粒的晶体结构中含有摩尔分数为4%的无定形碳。结果    通过对HA中碳的检测，证实了存在碳酸磷灰石的结构。钛表面的黏附-分离实验显示，CaTiO3-αC／HA涂层的黏附强度是单纯HA涂层的2.5倍。结论    改良热分解法制备的CaTiO3-αC层（0.6 μm厚）和含有碳酸磷灰石的HA层（2.4 μm厚）组成的双层生物活性材料能够作为钛表面理想的涂层材料。

关键词: 生物材料, 钛, 碳, 羟基磷灰石, 涂层材料, CaTiO3-&alpha, C

Abstract:

Objective    To study the properties of a new titanium coating material（CaTiO3-αC）with modified thermal decomposition technique. Methods    We developed a novel method for titanium coating material using modified thermal decomposition technique，specifically focusing on presence of CaTiO3 and carbon C. Two layers of thin film coating composed of CaTiO3-amorphous carbon compound（CaTiO3-αC）and hydroxyapatite（HA）were generated on titanium surface. In this method，ratios of Ca／P as well as Ca／Ti，sintering temperature and sintering velocity were carefully planned. Within crystal structure of CaTiO3 granules，4 atomic % of carbon in amorphous state was included. Results        By our method，inclusion of carbon in HA suggested formation of carbonate apatite. Regarding with attachment-detachment experiment at titanium surface，adhesion strength was 2.5 times stronger in CaTiO3-αC／HA coating substrate as compared to HA only coating material. Conclusions    Results of the novel developed modified thermal decomposition method suggested that the 2 layers biomaterial composed of CaTiO3-αC（0.6 μm）and carbonate apatite-included HA（2.4 μm）can be used as a coating material on titanium surface.

Key words: biomaterial；titanium；carbon；HA；coating material；CaTiO3-αC