正畸治疗对唇腭裂术后患者上颌牙弓形态的影响

Effects of orthodontic treatment on the shape of upper dental arch of paitents after surgical operation of cleft lip and palate

对唇腭裂术后作正畸治疗的９例患儿，未作正畸治疗的１０例患儿及正常牙合青少年１０例进行牙牙合模型测量和分析。结果显示：正畸治疗组上颌牙弓的长度和宽度明显增长（Ｐ＜０．０１），基本接近正常牙合；未治组上颌牙弓的生长受到极度抑制，与正常牙合组及正畸治疗组比较差异均非常显著（Ｐ＜０．０１）。

Occlusal casts were measured and analysed in the following groups: orthodontic group(9 subjects treated orthodonticly after surgical operation of the cleft lip and palate), untreated group(10 subjects untreated orthodonticly after surgical operation), normal group(10 young subjects with normal occlusion). The results were that the upper dental arch length and width increased evidently (P<0.01) in the orthodontic group and almost returned to normal; in contrast, the upper dental arch length and width were inhibited in the untreated group; there were significant differences among the normal occlusion group, the orthodontic group, and untreated group (P<0.01). The results suggest that during the period of growth and development, the shape of the upper dental arch of the patients can be evidently improved by the orthodontic treatment after the surgical operation of cleft lip and palate.