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首页> 外文期刊>Contemporary Clinical Dentistry >Management of developing skeletal class III malocclusion in a prepubertal girl with prognathic mandible in late mixed dentition
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Management of developing skeletal class III malocclusion in a prepubertal girl with prognathic mandible in late mixed dentition

机译：晚期混合牙列中有妊娠下颌骨的青春期前女孩发展中的骨骼III类错合的管理

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摘要

Treatment of skeletal Class III patients at younger age is highly unpredictable. The patient may respond well to the treatment or may show excessive mandibular growth during growth spurt which may require orthognathic surgery later on. If not treated at earlier stages of life, the condition may worsen with time. This case report will present the comprehensive orthodontic management of a 9-year-old prepubertal girl in late mixed dentition with prognathic mandible. Chin cup therapy was started and continued for 3 years. After chin cup therapy, maxillary and mandibular dentition were bonded with standard edgewise appliance. After leveling and alignment, Class III elastics were started. Fixed orthodontic treatment was completed in 3 years. At the end, good Class I molar and canine relationship with normal overjet and overbite were achieved. The total treatment time of orthopedic and orthodontic correction was 6 years, 2 months. The patient revealed the same Class I molar and canine relationship after 6 years of treatment. Redirection of mandibular growth pattern from hyperdivergent to normodivergent advocates the use of chin cup as a viable treatment regimen for the management of prognathic mandible in prepubertal patients.
机译：年龄较小的骨骼III类患者的治疗是高度不可预测的。患者对治疗的反应可能很好，或者在生长突增期间可能显示下颌过度生长，这可能需要稍后进行正颌外科手术。如果不及早接受治疗，病情可能会随着时间而恶化。该病例报告将介绍一名9岁的青春期前混合后牙期与下颌下颌骨的女孩的正畸综合治疗。下巴杯疗法开始并持续了3年。下巴杯治疗后，用标准的边缘矫正器将上颌和下颌牙列粘合在一起。找平和对齐后，开始使用III类松紧带。固定的正畸治疗在3年内完成。最后，获得了良好的I类磨牙和犬齿与正常的过喷射和过咬的关系。骨科和正畸矫正的总治疗时间为6年2个月。治疗6年后，该患者显示出相同的I类磨牙和犬齿关系。将下颌骨生长方式从过度散发转向正常散发，主张使用下巴杯作为治疗青春期前下颌下颌骨的可行治疗方案。

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