Abstract:Objective To study the changes of alveolar bone morphology in adolescent orthodontic maxillary incisors with different adduction methods by cone beam CT (CBCT). Methods A total of 60 adolescent patients with mandibular protrusion (120 maxillary incisors) admitted to Meizhou Liyany Dental Hospital from January to December 2023 were randomly divided into control group and observation group, with 30 patients in each group and 60 teeth in each group. The control group was treated with tilt adduction, and the observation group was treated with controlled adduction. The tooth adduction and alveolar bone remodeling indexes were compared between the two groups. Results There was no significant difference in RA-VD value between the two groups (P >0.05). The values of IE-VD and LAI/PP in the observation group were higher than those in the control group (P <0.05). There was no significant difference in P1 value between the two groups (P >0.05). The L1, L2, L3 and VP values of the observation group were lower than those of the control group, and the P2, P3, T1, T2, T3 and VL values were higher than those of the control group (P <0.05). Conclusion Inclined adduction may limit local alveolar bone remodeling in adolescent orthodontic treatment, while controlled adduction shows that alveolar bone remodeling lags behind tooth movement, but excessive adduction should be avoided to protect periodontal tissue.