Comparison of the Effects of Different Orthodontic Maxillary Retraction Methods on Alveolar Bone in Adolescents Orthodontics

Wan Zhigang; Zhang Peipei

doi:10.3969/j.issn.1672-7185.2026.02.019

Abstract：Objective To compare the effects of different orthodontic maxillary retraction methods on alveolar bone morphology in adolescent orthodontics.Methods One hundred and twenty adolescent orthodontic patients admitted to Jianli People's Hospital from December 2022 to December 2024 were selected as the research subjects.According to different orthodontic maxillary retraction methods,they were divided into a inclination retraction group(60 cases,82 teeth)and a root-control retraction group(60 cases,118 teeth).The retraction status,alveolar bone morphology,bone metabolism indicators,and complications were compared between the two groups.Results The RA-MP changes in the inclination retraction group were lower than those in the root-control retraction group,while the IE-MP and LAI-PP changes were higher than those in the root-control retraction group(P<0.05).The measured values of L1,L2,and L3 in the inclination retraction group were lower than those in the root-control retraction group,while the measured values of P1,P2,P3,T1,T2,and T3 were higher than those in the root-control retraction group(P<0.05).There was no statistically significant difference in maxillary bone density,mandibular bone density,osteocalcin,and C-terminal cross-linked peptide of type I collagen between the two groups(P>0.05).Conclusion The inclination retraction is more conducive to change the inclination of the incisors and the height of the alveolar bone,while root-control retraction is more conducive to maintain the bone mass on the labial side.However,both of them have similar effects on bone density,so clinical selection of retraction methods should be based on individual alveolar bone conditions.