Objective To explore the effect of orthodontic full crown repair in patients with anterior crown root fractures. Methods From January 2019 to December 2021, 80 patients with anterior crown root fractures admitted to Zhangjiakou Stomatological Hospital were selected as research subjects. They were divided into a control group and an observation group according to the random number table method, with 40 patients in each group. The control group was treated with porcelain fused to metal crown restoration, and the observation group was treated with porcelain fused to metal crown restoration after orthodontic traction. The clinical efficacy, anterior occlusal function [intercuspal position-habitual biting (ICP-HB) EMG value, intercuspal position-maximal clenching (ICP-MC) EMG value], and aesthetic effect [Pink Esthetic Score (PES)] were compared between the two groups. Results The excellent and good rate of treatment in the observation group was 95.00%, which was higher than 77.50% in the control group, the difference was statistically significant (P<0.05). The ICP-HB EMG value and ICP-MC EMG value of the two groups after repair were higher than those before repair, and those in the observation group were higher than those in the control group, the differences were statistically significant (P<0.05). The PES score of the two groups after repair were higher than those before repair, and those in the observation group were higher than those in the control group, the differences were statistically significant (P<0.05). Conclusion Orthodontic full crown restoration is effective in patients with anterior crown root fracture, which can effectively improve the anterior occlusal function, periodontal and gingival conditions of patients. Meanwhile, the aesthetic effect after repair is better, which is worthy of clinical application.