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目的:研究乌鲁木齐地区汉族成人正常牙合Ricketts分析法头影测量值范围,并分析其颅颌硬组织形态特征。方法:选取乌鲁木齐地区81例汉族成年人恒牙期正常牙合拍摄头颅定位侧貌X光数字式图像,采用Ricketts分析法选取面轴角、面角、下颌平面角、颏角、下面高角、下颌弓角、Y轴角、A点突度、切牙倾斜度、切牙突距、颌面高度比等16项测量指标进行分析。结果:乌鲁木齐地区汉族人群颅颌前部较平直;前、后颅底较长;纵深较窄;牙弓突度相对后缩;面后份高度增大,面前份高度较短;颏突较小。男女性别间上颌突度、下颌支倾斜度、面高比及面型生长趋势存在差异。结论:乌鲁木齐地区汉族人群牙颌、颅颌硬组织形态具有本地区特征:直面型,鼻根点较为前挺,上颌突度缩小,额部较前突。女性颅颌纵向、横向深度均小于男性,女性具有突颌趋势,下颌倾斜度女性大于男性,下颌生长趋势女性为平均生长型,中间面型,男性为水平生长型,短面型。
Objective: To study the measurement range of craniofacial Ricketts analysis of adult Han nationality in Urumqi and to analyze the morphological features of craniofacial hard tissue. METHODS: Eighty-one Han Chinese adults under permanent dentition from Urumqi were enrolled in this study. X-ray digital images of craniofacial images were obtained. Ricketts analysis was used to select facial axis angle, facial angle, mandibular plane angle, chin angle, Bow angle, Y-axis angle, A point of protrusion, incisor incisors, incisors distance, maxillofacial height ratio of 16 measurement indicators were analyzed. Results: The anterior cranial cranial and cranial jaw of Han nationality in Urumqi were relatively flat. The anterior and posterior skull bases were longer, the depth of the skull was narrower, the arch of the arch was relatively contracted, the height of the posterior face of the face was shorter, and the height of the anterior face was shorter. small. Male and female gender differences in maxillary protrusion, mandibular branch inclination, aspect ratio and surface growth trends are different. Conclusion: The dental structures of the mandibular and cranial jaws of the Han nationality in Urumqi have the characteristics of the region: straight face type, more forward nasal root points, narrower maxillary protrusion and more forehead. Female craniofacial longitudinal and transverse depths were less than men, women with protruding jaw trend, mandibular inclination of women than men, the trend of growth of the mandibular growth for the average female, the middle type, the male horizontal growth type, short type.