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.
进行天然牙与种植体联合支持固定桥修复时，可在种植体端设计套筒冠固位体，以缓冲种植体周围骨组织的应力水平，防止或减轻种植体支持组织的损伤。
In designing the fixed bridge supported by tooth-implant, we can design telescope retainer on implant to reduce the stress of bone tissues around the implant and to prevent damages to bone tissues.
目的通过对32例冠脉搭桥手术中使用主动脉吻合器进行静脉桥近端吻合的总结，探讨主动脉吻合器的应用价值。
To evaluate the role of aortic connector by summarizing 32 cases CABG using aortic connector in proximal anastomosis of vein grafts.
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