正常牙合中国人下颌后牙槽形态与生长型的相关性研究
Association between mandibular posterior alveolar morphology and growth pattern in a Chinese population with normal occlusion.
机构信息
Department of Orthodontics, Shandong Provincial Key Laboratory of Oral Biomedicine, Shandong University, Jinan 250012, China.
出版信息
J Zhejiang Univ Sci B. 2013 Jan;14(1):25-32. doi: 10.1631/jzus.B1200122.
Abstract
OBJECTIVE
To investigate the relationship between growth patterns and mandibular posterior tooth-alveolar bone complex morphology in a Chinese population with normal occlusion.
METHODS
Forty-five patients with normal occlusion (23 males, 22 females) were included in this study. Among these patients, 20 displayed the vertical growth pattern, and 20 had the horizontal growth pattern, while the remaining patients displayed the average growth pattern. All of the patients underwent dental cone beam computed tomography (CBCT), which included the region of the mandibular posterior teeth and the alveolar. A linear regression analysis and a correlation analysis between the facial height index (FHI) and the alveolar bone morphology were performed.
RESULTS
The inclination of the molars, the thickness of the cortical bone, and the height of the mandibular bone differed significantly between patients with the horizontal growth pattern and those with the vertical growth pattern (P<0.05). Significant positive correlations were found between: the FHI and the inclination of the molars; the FHI and the thickness of the cortical bone; and the FHI and the height of the mandibular bone.
CONCLUSIONS
The mandibular posterior tooth-alveolar bone complex morphology may be affected by growth patterns.
摘要
目的
研究正常牙合中国人中生长型与下颌后牙牙槽骨复合体形态的关系。
方法
本研究纳入 45 名正常牙合患者（男 23 名，女 22 名）。其中 20 名患者为垂直生长型，20 名患者为水平生长型，其余患者为平均生长型。所有患者均接受了口腔锥形束 CT（CBCT）检查，包括下颌后牙和牙槽区域。对 FHI 与牙槽骨形态进行线性回归分析和相关性分析。
结果
水平生长型患者的磨牙倾斜度、皮质骨厚度和下颌骨高度与垂直生长型患者存在显著差异（P<0.05）。FHI 与磨牙倾斜度、FHI 与皮质骨厚度以及 FHI 与下颌骨高度之间存在显著正相关。
结论
下颌后牙牙槽骨复合体形态可能受生长型影响。
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