n. retention ; maintenance
结论：种植体术后早期适量的补锌能够提高种植体的固位强度，提高骨整合的速度和质量。
CONCLUSION: Moderate zinc supplement may increase fixation strength and promote the speed and quality of osseointegration.
在工程抗震设计中，上部结构嵌固位置的确定是设计的出发点，而同一结构单元的不等高嵌固问题长期困扰设计人员。
The solid end of the structure is the starting point of seismic design, and the structure with varied solid ends is a puzzled problem for engineers.
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.
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