对南印度人群中牙冠角度、牙冠倾斜度和牙齿大小差异的评估。
Assessment of crown angulations, crown inclinations, and tooth size discrepancies in a South Indian population.
作者信息
Doodamani Geeta Maruti, Khala Anmol S, Manohar Mala
机构信息
Department of Orthodontics, The Oxford Dental College, Hospital and Research Center, Hosur Road, Bangalore, India.
出版信息
Contemp Clin Dent. 2011 Jul;2(3):176-81. doi: 10.4103/0976-237X.86449.
AIMS AND OBJECTIVE
The aim of this study was to assess crown angulations, crown inclinations, and tooth size discrepancy in a sample population from Davangere, South India.
MATERIALS AND METHODS
One hundred adults (50 male and 50 female) of age 18-30 years, with Angle's class I ideal occlusion and balanced profiles, were selected for the study. Study models were prepared and crown angulations and crown inclinations were measured using a customized protractor device. Bolton's analysis was used to measure the tooth size discrepancies.
RESULTS
Maxillary and mandibular teeth had less crown angulations. Maxillary and mandibular incisors and maxillary molars showed increased crown inclinations, whereas mandibular molars and premolars had less crown inclinations than the original Andrews sample. The mean maxillary and mandibular tooth size ratios, overall and anterior, were similar to Bolton's ratios.
CONCLUSIONS
The finding of this study indicates that there are possible racial and ethnic factors contributing to variations in crown angulations and crown inclinations.
目的
本研究旨在评估印度南部达万盖尔样本人群的牙冠角度、牙冠倾斜度和牙齿大小差异。
材料与方法
选取100名年龄在18 - 30岁之间、安氏I类理想咬合且面部轮廓对称的成年人（50名男性和50名女性）进行研究。制备研究模型，并使用定制的量角器装置测量牙冠角度和牙冠倾斜度。采用博尔顿分析来测量牙齿大小差异。
结果
上颌和下颌牙齿的牙冠角度较小。上颌和下颌切牙以及上颌磨牙的牙冠倾斜度增加，而下颌磨牙和前磨牙的牙冠倾斜度低于原安德鲁斯样本。上颌和下颌牙齿大小的平均比例，整体和前部，与博尔顿比例相似。
结论
本研究结果表明，可能存在种族和民族因素导致牙冠角度和牙冠倾斜度的差异。
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