下切牙倾斜度与支持牙槽骨形态的关系——锥形束 CT 研究。
The association between lower incisal inclination and morphology of the supporting alveolar bone--a cone-beam CT study.
机构信息
Shanghai Key Laboratory of Stomatology, Department of Orthodontics, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
出版信息
Int J Oral Sci. 2009 Dec;1(4):217-23. 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 surrounding 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.
目的
研究下颌中切牙位置与周围牙槽骨形态的关系。
方法
本研究纳入 38 名患者（18 名男性，20 名女性），平均年龄 13.4 岁。作为正畸治疗计划的一部分，患者需要拍摄包括下颌切牙、周围牙槽骨和下颌联合区的口腔锥形束 CT（CBCT）。设计并测量头影测量参数以指示下颌中切牙的倾斜度和相邻牙槽骨的形态。使用 Windows 版 SPSS 15.0 软件包进行计算机辅助描述性统计分析。对切牙倾斜度与牙槽骨形态之间进行相关性分析和线性回归分析。
结果
下颌中切牙倾斜度与牙槽骨形态之间存在显著正相关（P<0.05）。当切牙颊倾时，根尖更靠近舌侧牙槽嵴。
结论
牙槽骨的形态可能受到切牙倾斜度的影响。
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