Forsus矫治器在恒牙早期安氏Ⅱ类Ⅰ分类错合矫治中的临床应用

Treatment of class Ⅱ division Ⅰ malocclusions in growing patients with forsus appliance

目的观察Forsus矫治器矫治恒牙早期安氏Ⅱ类Ⅰ分类错合的效果。方法采用Forsus推杆矫治器对12个下颌后缩安氏Ⅱ类Ⅰ分类错合青少年患者进行治疗,平均年龄12.6±1.1岁。治疗前后分别摄头影X侧位片进行测量分析。结果X线片显示Forsus矫治器均刺激了下颌的生长,增加了患者的前面高。上颌第一磨牙远中移动并压低,覆合.覆盖减少,患者咬合均达安氏Ⅰ类关系,并且侧貌得到改善。结论Forsus矫治器对于恒牙早期Ⅱ类Ⅰ分类错合的患者矫治效果明显。Forsus矫治器既可刺激下颌骨的生长同时又可抑制上颌骨的生长。

Objective To evalute the effects of class II division 1 Malocclusions in growing patients treated by Forsus applianceallethods 12 Class lI division I malocclusions patients who had a retregnathic mandible, with a mean age of 12.6 ± 1.1 years,were treated with Forsus appliance in the early permanent dentition.Lateral cephalometric and study models were taken at the beginning and the end of the treatment. Cephalometric analysis was performed.Results Cephalometric analysis revealed that both the appliances stimulated mandibular growth, increased the anterior face height. Distal movement and intrusion of the maxillary first molars and mesial movement.Overjet and overbite were decreased, and a Class I molar relationship and improvement in the profile were attained.Conclusion Forsus appliance was effective to correct Class lI division 1 malocclusion in growing patients.Forsus appliance stimulated the mandibular growth and inhibited the maxillary growth.