Factors affecting local alveolar bone thickness in unilateral maxillary canine–lateral incisor transposition

• Published in: American journal of orthodontics and dentofacial orthopedics 2024-05, Vol.165 (5), p.576-585
• Main Authors: Chi, Jun, Yan, Liya, Chen, Siyun, Zhou, Jianan, Voliere, Gerald, Pan, Wenhao, Gong, Yixuan, Lin, Haisheng, Hu, Rongdang
• Format: Article
• Language: English
• ISSN: 0889-5406; 1097-6752
• DOI: 10.1016/j.ajodo.2023.11.015

This study aimed to use 3-dimensional data to investigate the factors affecting local alveolar bone thickness in unilateral maxillary canine–lateral incisor transposition. Pretreatment cone-beam computed tomography data of 34 patients with unilateral maxillary canine–lateral transposition were imported into Dolphin Imaging software (version 11.8; Dolphin Imaging and Management Solutions, Chatsworth, Calif) for 3-dimensional reconstruction. The age, gender, and type of transposition at the beginning of treatment were recorded. The thickness and height of the transposed canine, the labiopalatal and distomedial distance from the transposed canine to the apex of the lateral incisor, the inclination of the transposed lateral incisor, the apical height of the lateral incisor, and the alveolar bone thickness in the apical plane were measured. Multiple linear regression analyses were applied to investigate the factors affecting alveolar bone thickness in the apical plane of the transposed lateral incisor. Two sample t test were applied to assess the difference of alveolar bone thickness in patients of different ages. The 10 boys and 24 girls had a mean age of 12.26 ± 2.34 years. In all 34 participants, the apical alveolar bone thickness of transposed lateral incisors was significantly higher than that of the unaffected side (P