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目的分析广东地区个别正常青少年正面和侧面面型特征,为正畸、正颌手术治疗提供参考。方法筛选广东地区直面型且为个别正常的青少年60名,男30名,女30名,取自然头位、正中关系位(centric occlu-sion,CR)和唇放松位进行标准拍照和测量,并比较男女面型差异。结果男女青少年面下部高度均比面中部高度短,下唇长度约为上唇长度的2倍。面中部、面下部高度和上下唇长度的性别差异有统计学意义(P<0.05)。鼻前角(t=-2.181,P=0.028)、鼻面角(t=-1.087,P=0.041)、鼻颏角(t=0.301,P=0.001)和颏颈角(t=-0.231,P=0.001)的性别差异均有统计学意义(P<0.05)。女性的鼻前角和鼻面角比男性大,而鼻颏角和颏颈角比男性小。面型角的性别差异无统计学意义(t=0.107,P=0.578)。结论获得了广东地区正常青少年面部特征的数据,为正畸和正颌手术治疗计划的制定提供理论参考依据。
Objective To analyze the positive and lateral facial features of some adolescents in Guangdong Province and provide reference for orthodontic and orthognathic surgery. Methods Sixty young adolescents, 30 males and 30 females, were screened in Guangdong Province for face-to-face type and normal individuals. The images of centric occlu-sion (CR) and lip-relaxed position were photographed and measured. And to compare the difference between men and women face. Results The height of the lower part of both men and women was shorter than that of the middle part of the face, and the length of the lower lip was about twice that of the upper lip. There were significant differences in the height of the middle part, the lower part of the face and the length of the upper and lower lip (P <0.05). Nasal angle (t = -1.087, P = 0.041), nasal chin angle (t = 0.301, P = 0.001) and chin neck angle (t = -0.231, P = = 0.001) of the gender differences were statistically significant (P <0.05). Women’s nasal rachis and nasal angle than men, and nasal chin and neck neck angle than men. There was no statistical difference in the gender of face angle (t = 0.107, P = 0.578). Conclusion The data of facial features of adolescents in Guangdong Province were obtained, which provided theoretical references for the formulation of orthodontic and orthognathic surgery plans.