论文部分内容阅读
眼耳平面与前颅底平面角(FH—SN角)的修正:该角值与成人的均值相比较显示较大时,将其与均值的差加在蝶鞍中心点一鼻根点一上牙槽座点角(SNA)和蝶鞍中心点一鼻根点一下牙槽座点角(SNB)值上:该角值比均值小时,即从SNA和SNB的角值中减去其与均值的差。上牙槽座点一鼻根点一下牙槽座点角的修正(ANB角):首先注意SNA角值。该角值与成人SNA角的均值的差为2.0°时,按1.0°的比例算出修正值。为了避免过度修正,当该角与SNA角均值差超过10.0°时,从所得的修正值中减去1.0°;超过5.0°时则减去0.5°。按照上述方法,SNA角值比均值大的时侯,可确认ANB角也过大,需从原来的ANB角值中
Correction of EH plane and FH-SN angle: When the angle value is larger than that of the adult, the difference between it and the mean is added to the center point of the sella At the SNA and the center of the sella, take a look at the SNB value: when the angle is smaller than the mean, subtract the mean value from the SNA and SNB values The difference Point on the alveolus to a point of root point Alveolus point angle correction (ANB angle): First note the SNA angle value. When the difference between this angle value and the average of adult SNA angles is 2.0 °, a correction value is calculated in a ratio of 1.0 °. In order to avoid overcorrection, when the difference between the angle and the SNA angular difference exceeds 10.0 °, 1.0 ° is subtracted from the obtained correction value, and 0.5 ° is subtracted from 5.0 °. According to the above method, when the SNA value is larger than the average value, it can be confirmed that the ANB angle is too large. From the original ANB value