目的：考察不同种植基桩桩径对游离端缺失种植固定桥支架适合性的影响，以探讨临床上有无内冠与支架适合性的关系。

Objective: To compare the effects of the posts with different diameters and with or without core on the fitness of framework for free end implant bridge.

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本文详细阐述了临床上常用的316 L不锈钢冠状动脉支架植入后再狭窄的机理及其改性研究进展。

In this paper, the development of 316l stainless steel which is widely applied in medical field is discussed in details, including the mechanism of restenosis and the surface modification.

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