呼和浩特地区汉族正常(牙合)计算机辅助X线头影测量研究

COMPUTER AIDED RADIOGRAPHIC CEPHALOMETRY STUDY FOR THE PEOPLE WITH NORMAL OCCLUSION IN HOHHOT

以呼和浩特市180名中小学生为研究对象,运用计算机辅助X线头影测量系统,对其颅面、牙(牙合)22项硬组织指标进行了测量。提供了呼和浩特地区汉族正常验的X线头影正常值。结果表明,男女颅面结构差异以恒牙期显著,表现为颅面深度及高度的线距测量上,男性大于女性;颅面结构的深度、高度随生长发育而增大,侧貌凸度在恒牙初期以后减小显著。与国内其它地区对比,呼和浩特汉族人侧貌面形最凸,颅面深度及高度最大。上述结果为本地区错(牙合)畸形的诊治及审美标准提供了客观依据。

In order to establish thc normal value of radiographic cephalometry of the people with normal occlusion in the Inner Mongolia area and to reveal the regular pattern and the characteristic cancerning the growth of the people's cranoifacial morphology, the present study selected 180 primary and middle school students in Hohhot, apple computer aided radiographic cepholometry system to measure their cranioface and occlusion in twenty-two hard tissues items and finally establish the normal value standard of radiographic cephalometry of the people with normal occlusion in Inner Mongolia area for the first time. The results showed that there are marked variations for sex in the permanent dentition stage: the degrees of the depth and height of the male's craniofcial morphology arc greater than those of the female's: the depth and height of craniofcial morphology are increacing with the growth; the degree of protrusion for profile is markedly decreasing after the penmanent dentition initial stage. When compared with other areas, the people in the Inner Mongolia area are the most protrusion in the profile face form; the greatest in the depth and height of the cranioface. The establishment of the standard value of radiographic cephalometry of the people in the Inner Mongolia area and the discovery of the characteristic of craniofacial morphology provide objective basis for diognosis and treatment of malocclusion and aesthetic standard serving the Inner Mongolia area.