AIM: to investigate the repairing effect and clinical significance of using the residual root for fixed bridge abutmenttooth.
目的：探讨残根作为固定桥基牙的修复效果和临床意义。
2
It results in less bleeding, limited gingival damage during tooth preparation and clear soft tissue and abutmenttooth border.
结论该技术可减少牙体预备对牙龈组织的损伤及出血；能帮助取得清晰的软硬组织界限。
3
AIM: to study the stress distribution of periodontal membrane of fixed abutmenttooth with different thickness, and provide theoretical basis in clinic.