The Association between Lower Incisal Inclination and Morphology of the Supporting Alveolar Bone A Cone-Beam CT Study

• Published in: International journal of oral science 2009-12, Vol.1 (4), p.217-223
• Main Authors: Yu, Quan, Pan, Xiao‐gang, Ji, Guo‐ping, Shen, Gang
• Format: Article
• Language: English
• Subjects: Adolescent; Alveolar Process - diagnostic imaging; Alveolar Process - pathology; Cephalometry - methods; Chin - diagnostic imaging; Chin - pathology; Cone-Beam Computed Tomography - methods; Dentistry; Female; Humans; Incisor - diagnostic imaging; Incisor - pathology; Male; Mandible - diagnostic imaging; Mandible - pathology; Medicine; Numerical Analysis, Computer-Assisted; Oral and Maxillofacial Surgery; Original Scientific; original-scientific-article; Orthopedics; Patient Care Planning; Software; Surgical Orthopedics; Tooth Apex - diagnostic imaging; Tooth Apex - pathology; 口腔科学; 牙周炎
• ISSN: 1674-2818; 2049-3169
• DOI: 10.4248/IJOS09047

Aim To investigate the relationship between the positioning of the lower central incisor and physical morphology of the surrounding alveolar bone. Methodology Thirty-eight patients （18 males, 20 females）, with mean age of 13.4 years, were included in this study. As part of orthodontic treatment planning the patients were required to take dental Cone-beam CT （CBCT） covering the region of lower incisors, the sur- rounding alveolar bone and the mandibular symphysis. The cephalometric parameters were designed and measured to indicate the inclination of lower central incisor and physical morphology of the adjacent alveolar bone. Computer-aided descriptive statistical analysis was performed using SPSS 15.0 software package for Windows. A correlation analysis and a linear regression analysis between the incisor inclination and the alveolar bone morphology were performed. Results Significant positive correlations were found between the lower central incisor inclination and the morphological contour of the alveolar bone （P〈0.05）. The lower central incisor root apex was closer to the lingual alveolar crest when it was buccally inclined. Conclusion The morphology of the alveolar bone may be affected by incisal inclination.