60例广东省双颌前突患者头影测量分析研究

目的：探讨广东省双颌前突患者牙、颌以及软组织的特征。方法：对60例广东省双颌前突容患者的头影测量描图，将测量值与北京正常He值相比较，总结广东省前突面型患者的特征。结果：同北京正常He相比较，广东省双颌前突患者下颌骨位置相对后缩，向后下旋转，切牙过度唇倾，下唇较厚，颏厚小于正常值，颏部特征不明显，中面部相对突出，结论：只有根据广东双颌前突的特征，在矫治过程中注重颌骨位置的调整，严格控制后牙支抗，内收切牙，才有助于患者面貌的改善。

Cephalometric Analysis of the Patients with Bimaxillary Protrusion in South China

Objective: The purpose of this article is to characterize the teeth, jaws and soft tissues of the patients with bimaxillary protrusion in south China.Methods: The results of cephalometric analysis of 60 patients with bimaxillary protrusion were compared with the normal occlusions in Beijing. Results: Compared with the normals in Beijing, the mandibles of the subjects were positioned more backward and rotated inferior posteriorily. The incisors inclined extremely to the labial side and the lower lip was thicker. The mental thickness was less than the normal, and the mental contour was not clear. The middle face was eminent. Conclusion: The results suggest it is of critical importance to manage to adjust the position of jaws, to control the molar anchorage strictly, and to achieve the maximal incisor retraction, so as to benefit the improvement of facial features.;