Measurement of Cortical Bone Thickness in Adults by Cone-beam Computerized Tomography for Orthodontic Miniscrews Placement

• Published in: Journal of Huazhong University of Science and Technology. Medical sciences Vol. 33; no. 2; pp. 303 - 308
• Main Author: 赵弘 顾晓明 刘洪臣 王照五 寻春雷
• Format: Journal Article
• Language: English
• Published: Heidelberg Huazhong University of Science and Technology 01.04.2013; Center of Stomatology, General Hospital of Chinese Peoples Armed Police Forces, Beijing 100039, China%Institute of Stomatology, Division of Clinical Surgery, Chinese PLA General Hospital, Beijing 100853, China%Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China
• Subjects: Adult; Bone Screws; Cone-Beam Computed Tomography - methods; Dental Implantation, Endosseous, Endodontic - instrumentation; Dental Implantation, Endosseous, Endodontic - methods; Female; Humans; Male; Mandible - diagnostic imaging; Mandible - surgery; Maxilla - diagnostic imaging; Maxilla - surgery; Medicine; Medicine & Public Health; Radiography, Dental - methods; Reproducibility of Results; Sensitivity and Specificity; Surgery, Computer-Assisted - methods; Young Adult; 厚度测量; 成年人; 放置; 断层; 正畸; 电脑; 皮质骨; 锥束; bone quality; miniscrew; cortical bone thickness
• DOI: 10.1007/s11596-013-1115-x
• ISSN: 1672-0733

The purpose of this study was to investigate the cortical bone thickness of the inter-dental area of both jaws for orthodontic miniscrew placement. The cone-beam computerized tomography images of 32 non-orthodontic adults with normal occlusion were taken to measure the cortical bone thick- ness in both.jaws. One-way analysis of variance （ANOVA） was used to analyze the differences in cortical bone thickness. Buccal cortical bone in the mandible was thicker than that in the maxilla. In the maxilla, cortical bone thickness was thicker in the buccal side than in the palatal side. Buccal cortical bone thickness in the mandible was thickest at the site distal to the first molar, and in the maxilla it was thickest at the site mesial to the first molar, while in the palatal side of maxilla it was thickest at the site mesial to the second premolar. The changing pattern of cortical bone thickness varies at different sites. In the buccal side of maxilla, the thinnest cortical bone thickness was lbund to be at 4 mm level from the alveolar crest, while the thickest was at 10 mm level （except for the site mesial to the first premolar）. The buccal cortical bone thickness at the sites mesial or distal to the first molar in the mandible and palatal cortical bone thickness of maxilla tended to increase with increasing distance from the alveolar bone.