Tsai H H
Department of Pedodontics, School of Dentistry, China Medical Collage, 91 Hsueh Shih Road, Taichung, 404 Taiwan, Republic of China.
ASDC J Dent Child. 2001 Jan-Feb;68(1):27-32, 10.
The craniofacial and dental components of anterior crossbite children with a full primary dentition were investigated by means of a cephalometric and correlation study. A group of thirty-two Taiwanese children with anterior crossbite was compared to a group of thirty-two normal occlusion subjects. The facial profile polygon method was used for assessing morphological characteristics of craniofacial pattern. According to the results, early signs of anterior crossbite are present in the primary dentition. A smaller anterior cranial base, a retruded positioning of the maxilla and a smaller interincisal angle were found in the anterior crossbite children. A correlation analysis between all the cephalometric measurements was carried out, and the significance of the differences between correlation coefficients of the two groups was calculated. the normal occlusion group shows negative correlation between interincisal angle and FH-SGn angle. The anterior crossbite group shows positive correlation between FH-NPog angle and U1-FH angle.
通过头影测量和相关性研究，对乳牙列完整的前牙反合儿童的颅面和牙齿组成部分进行了调查。将一组32名台湾前牙反合儿童与一组32名正常咬合受试者进行了比较。采用面部轮廓多边形法评估颅面形态特征。结果显示，乳牙列中存在前牙反合的早期迹象。前牙反合儿童的前颅底较小，上颌后缩，切牙间角较小。对所有头影测量值进行了相关性分析，并计算了两组相关系数差异的显著性。正常咬合组切牙间角与FH-SGn角呈负相关。前牙反合组FH-NPog角与U1-FH角呈正相关。
