Association between mandibular posterior alveolar morphology and growth pattern in a Chinese population with normal occlusion  

作　　者：Min HAN Rong-yang WANG Hong LIU Xiu-juan ZHU Fu-lan WEI Tao LV Na-na WANG Li-hua HU Guo-ju LI Dong-xu LIU Chun-ling WANG 

机构地区：[1]Department of Orthodontics, Shandong Provincial Key Laboratory of Oral Biomedicine, Shandong University, Jinan 250012, China [2]Department of Radiology, Shandong Provincial Key Laboratory of Oral Biomedicine, Shandong University, Jinan 250012, China

出　　处：《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》2013年第1期25-32,共8页浙江大学学报（英文版）B辑（生物医学与生物技术）

基　　金：Project supported by the Shandong Science and Technology Planning Project (Nos.2010G0020232,2010HM053,and 2010GSF10269);the Shandong Provincial Natural Science Foundation (No.ZR2012HM087);the Jinan Science and Technology Planning Project(No.JN201202042);the Shandong University Project(Nos.2011JC009 and 2012JC031),China

摘　　要：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.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 mor- phology may be affected by growth patterns.

关 键 词：Cone beam computed tomography （CBCT） Growth pattern Alveolar morphology Normal occlusion 

分 类 号：R783.5[医药卫生—口腔医学]