Carvajal R, Miralles M R, Ravera M J, Cauvi D, Manns A, Carvajal A
Department of Orthodontics, Faculty of Odontology, University of Chile, Santiago.
Cleft Palate Craniofac J. 1994 May;31(3):173-8. doi: 10.1597/1545-1569_1994_031_0173_eacfip_2.3.co_2.
Cephalometric measurements and electromyographic analysis of the superior orbicularis oris muscle were undertaken in 13 children with unilateral cleft lip and palate with a short upper lip length who have undergone surgery in childhood. Initially, cephalometric and electromyographic records were evaluated and again after the subjects had continuously worn, for 4 months, a removable appliance specially designed to avoid the restraining effect of superior orbicularis oris muscle activity over the maxilla. Comparison between pretreatment and posttreatment cephalometric measurements showed a significant improvement in both the sagittal position of the maxilla and the dentoalveolar position. No significant changes were observed in electromyographic activity during rest or when saliva swallowing. Cephalometric changes suggest that the removable appliance used improves the growth of the maxilla.
对13名童年时期接受过手术的单侧唇腭裂且上唇长度较短的儿童进行了口轮匝肌上部的头影测量和肌电图分析。最初，对头影测量和肌电图记录进行了评估，在受试者连续佩戴专为避免口轮匝肌上部活动对上颌骨的限制作用而设计的可摘矫治器4个月后，再次进行评估。治疗前和治疗后头影测量的比较显示，上颌骨的矢状位置和牙槽位置均有显著改善。在休息或吞咽唾液时，肌电图活动未观察到显著变化。头影测量的变化表明，所使用的可摘矫治器改善了上颌骨的生长。
