目的：探讨不同载荷条件对后牙单种植体周围组织的力学影响。
Objective: to investigate the influence of load location to the strains at the tissue around endosteal implant for posterior single tooth replacement.
目的了解种植体龈下菌群构成变化与种植体周围组织炎的关系。
Objective To investigate the relationship between the peri-implant inflammation and the changes of subgingival microfloral.
结论：PISF蛋白含量可以在一定程度上反映种植体周围组织的炎症状况。
Conclusion: Total protein level in PISF could reflect peri-implant inflammation to some degree.
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