AIM: to study the stress distribution of periodontal membrane of fixedabutment tooth with different thickness, and provide theoretical basis in clinic.
目的：研究固定桥基牙牙周膜厚度不同时牙周膜内的应力分布，为临床工作提供理论依据。
2
Conclusion: Abutment tilted less than 70 degrees can be fixed and repaired.
结论：基牙倾斜角度在70度内可以进行固定修复。
3
Objective: Stress levels of the surface of alveolar bone around bridge abutment of posterior fixed bridge were studied.