碳—钛复合体骨内种植骨界面的超微结构观察

Ultrastructural Study of Interface to Endosseous Implant of C—Ti Composite

目的：为了寻找生物相容性更好的种植材料，提高种植义齿的成活率，证实碳—钛复合体的优良生物相容性。方法：将Ｃ—Ｔｉ复合体和Ｔｉ两种种植体同时植入６条狗的双侧下颌骨内，共植入１２个种植体。将动物分成３组，每组２条，分别于术后１、２、４个月处死动物取材。通过扫描电镜，透射电镜等方法，根据骨界面结合的紧密程度，成骨细胞出现的早晚、数量、活跃程度确定Ｃ—Ｔｉ复合体的生物相容性。结果：碳复合体的生物相容性明显高于Ｔｉ。结论：由于Ｃ—Ｔｉ复合体可提前达到骨整合，生物相容性优良，应用于临床可缩短种植后的无负荷期。

Objective: In order to find an implant material with better biocompatibility and raise the survival rate of implanted tooth, we tested the quality of C—Ti composite.Methods: We installed twelve implants simultaneously into bilateral mandiles of six dogs. Hals of the implants were made of C—Ti composite, and the other half were made of Ti alone. The animals were randomly assigned to be killed one, two, and four months after implantation, with two dogs for each time. Then we studied the victims by scanning electron microscope and transmission electron microscope. Results: C—Ti compostie implants had a better biocompatibility than Ti. The former could shorten the course for osseointegration and the non loading period after implantation. Conclusion: C—Ti composite is better for clinical application.