蒙古族正常成年人颅颌面硬组织三维特点

FEATURES OF THREE-DIMENSIONAL X-RAY CEPHALOMETRICS OF CRANIOMAXILLOFACIAL HARD-TISSUES IN THE MONGOLIAN

目的 :研究蒙古族颅颌面硬组织三维X线头影测量特点。方法 :选择符合正常标准的蒙古族成年人 10 5名 (男 5 1名 ,女 5 4名 )拍摄正侧位头颅定位片 ,计算 33项线距 ,运用t检验进行统计学分析。结果 :(1)三维X线线距测量有性别差异 ;(2 )蒙古族正常成年人线距测量在矢状 ,横向 ,垂直三维方向与广东和西安正常成年人有显著性差异 ;(3)左右相同项目测量结果不完全一致。结论 :蒙古族颅颌面硬组织三维X线头影测量为本民族建立了正常值数据库 ,成为本民族正颌外科和牙齿正畸的诊断、设计和治疗的定量依据。

Objective:To study the three dimensional x ray cephalometry of craniomaxillofacial hard tissue in the Mongolian. Methods:105 adults(male:51 and female:54) with normal occlusion relation are chosen. Lateral and posteroanterior cephalograms of the subjects are taken respectively with a roentgenograph cephalometer. Computing 33 items of length, the means and the standard deviations were subjected to a t test.Results:(1)The results of 3D x ray cephalometry show that length is connected with sexual discrepancy.(2)The Mongolian adults are different in sagittal, vertical and horizontal measurement when compared with Guangdong's and Xi'an's adults. (3) There are differences when the same measurement of both sides are compared. Conclusion:The three dimensional x ray cephalometry of craniomaxillofacial hard tissue in the Mongolian establishes the normal value of Mongolian, provides fixed quantity foundation for diagnosis, design and treatment of clinical orthognathic surgery and orthodontics in the Mongolian.