Guo Jia, Min Jie, Li Juan, Yu Hai-Yang
State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
Hua Xi Kou Qiang Yi Xue Za Zhi. 2020 Oct 1;38(5):598-601. doi: 10.7518/hxkq.2020.05.022.
The use of orthodontic traction to preserve healthy subgingival residual root is a classical method combining the treatment of restoration and orthodontics. Based on the target restoration space (TRS), by establishing a TRS digital model, the final traction position of the subgingival residual root can be preset. After evaluating the key parameters such as crown-to-root ratio and minimum crown height, clinicians can estimate the treatment time and exclude cases with bad preset position. The time of traction treatment can be effectively reduced, and the efficiency and efficacy of the entire treatment can also be improved.
采用正畸牵引保存健康的龈下残根是一种将修复治疗与正畸治疗相结合的经典方法。基于目标修复空间（TRS），通过建立TRS数字模型，可以预设龈下残根的最终牵引位置。在评估冠根比和最小冠高等关键参数后，临床医生可以预估治疗时间并排除预设位置不佳的病例。这样可以有效缩短牵引治疗时间，同时提高整个治疗的效率和效果。
