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颈头帽矫形治疗常用于Ⅱ类错(牙合)的早期治疗,但尚缺乏治疗效果的随访研究。本文评价了扩张式口内弓联合颈头帽治疗Ⅰ类错(牙合)后牙弓大小的变化。 材料和方法研究对象为40名健康学生(男女各20名)。纳入标准:①覆盖在2mm以上的Ⅰ类1分类错(牙合);②有治疗前后的石膏模型及头颅侧位片;③确定主要测量点;④合作良好或一般。治疗起始年龄男孩为9.8±1.2(7.2～12.4)岁,女孩8.9±1.2(6.6～12.2)岁。除1男孩外,所有患者均为混合牙列期。
Neck cap orthopedic therapy is commonly used in the early treatment of type II malocclusion, but there is a lack of follow-up studies of the therapeutic effect. This article evaluates the changes of the size of the dental arch after the expansion of the intraoral arch combined with the headgear to treat class I malocclusion. Materials and Methods The study population was 40 healthy students (20 males and 20 females). Inclusion criteria: â'¡ covering more than 2mm in Class Ⅰ 1 misclassification (occlusion); ② before and after treatment of gypsum model and cephalometric films; ③ determine the main measurement points; ④ cooperation is good or general. The initial treatment age was 9.8 ± 1.2 (7.2-12.4) years for boys and 8.9 ± 1.2 (6.6-12.2) years for girls. All patients except one boy were mixed dentition.