重庆医学Issue(2)：221-223,3.DOI:10.3969/j.issn.1671-8348.2015.02.026
CBCT评价儿童上后牙颊侧微种植体支抗植入部位的骨皮质厚度
Evaluation of buccal cortical bone thickness in maxillary posterior region for orthodontic micro-implants in children by using CBCT
摘要
Abstract
Objective To quantitatively evaluate the thickness of the buccal cortical bone in the posterior region of the maxillary for orthodontic micro‐implants in children .Methods Forty children (20 males and 20 females) in permanent dentition with Class Ⅱdivision 1 malocclusion were selected .The maxillary posterior alveolar bones of the subjects were scanned and reconstructed by cone‐beam computed tomography (CBCT) .The thickness of the cortical bone between the dental roots of the second upper premolar and the first upper molar at the height of 3 ,4 ,5 ,6 ,7 ,8 ,9 mm from the alveolar crest were determined .The data were analyzed sta‐tistically .Results The thickness of the cortical bone between the second upper premolar and the first upper molar was minimum at the height of 4 mm from the alveolar crest(P<0 .05) .The thickness of the cortical bone increased along with the distance increas‐ing from the alveolar crest at the height of 5 mm .The cortical bones in male were significantly thicker than those in female at the height of 7 ,8 ,9 mm (P<0 .05) .Conclusion The thickness of the buccal corticalbone in children in permanent dentition with ClassⅡ division 1 malocclusion changes with the measured vertical position .Micro‐implant anchorage is better to be placed in the area with a distance of 5 mm from the alveolar crest .关键词
骨和骨组织/颊/牙槽突/骨皮质厚度/锥束CTKey words
bone and bones/cheek/alveolar process/cortical bone thickness/cone-beam CT (CBCT)分类
医药卫生引用本文复制引用
肖遥,罗茂璇..CBCT评价儿童上后牙颊侧微种植体支抗植入部位的骨皮质厚度[J].重庆医学,2015,(2):221-223,3.基金项目
泸州医学院附属口腔医院青年基金（20130412）。 （）
