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混合牙列期的矫治,重要的是要知道未萌出牙的近远中径的大小,以便采用不同的矫治措施。以往的方法有:①直接从X线片上测量或再使用预测公式;②使用预测表;③前二种方法结合使用。本文作者研究了使用45°倾斜的头颅测量X线片来预测未萌下颌尖牙和前磨牙近远中宽度的可靠性,以便建立预测表。
Mixed dentition orthodontic treatment, it is important to know the emerald teeth near the size of the diameter in order to use different corrective measures. Past methods are: ① directly from the X-ray film or re-use the prediction formula; ② using the prediction table; ③ The first two methods used in combination. The authors studied the use of 45 ° tilted skull radiographs to predict the near-mid-width width of unmovable mandibular canine and premolar in order to establish a predictive table.