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目的:在成人双侧Ⅲ度唇腭裂患者前牙反牙合治疗中应用小型下颌双侧后退位牙合板,适度后退下颌骨,评价其矫治前牙反牙合的临床效果。方法:应用小型下颌双侧后退位牙合板治疗48例成人双侧Ⅲ度唇腭裂术后前牙反牙合患者。在打开咬合的同时后退下颌骨,亦可同时侧方调位下颌骨,并同时粘固上下颌牙列托槽进行牙列的排齐整平。正畸治疗结束后进行缺牙区义齿修复。结果:患者侧貌在戴用后退位牙合板后明显改善,下颌骨整体后退,反牙合矫治时间较普通牙合板明显缩短。使患者避免了正颌手术。随访2年以上疗效稳定。结论:小型下颌双侧后退位牙合板适用于下颌可适度后退的成人双侧唇腭裂术后前牙反牙合患者。下颌骨整体地有效后退缩短了矫治时间,也使上颌扩弓的难度明显减少。该牙合板结构小巧不影响上下颌牙列托槽的粘固,是较固定反式TBA更为理想的装置。
OBJECTIVE: To apply the mini-mandibular bilateral retreat plinth in the treatment of anterior crossbite in adult patients with bilateral Ⅲ degree cleft lip and palate, and to moderately withdraw the mandible to evaluate its clinical effect in anterior crossbite. Methods: A total of 48 cases of bilateral anterior occlusal cleft lip with or without cleft palate were treated with small mandibular bilateral retreat plinth. Open the bite at the same time retreat mandibular, but also at the same time lateral adjustment of the mandible, and at the same time cementing the mandibular dentition bracket dentition alignment. Orthodontic treatment of denture denture repair. Results: The appearance of the patient was significantly improved after wearing the retreated plywood and the entire mandible was retreated. The anti-orthodontic treatment time was significantly shorter than that of the ordinary plywood. Avoid orthognathic surgery. Follow-up more than 2 years efficacy and stability. Conclusion: The mini-mandibular bilateral retreat plinth is suitable for anterior crossbite patients with bilateral mandibular cleft lip and palate with moderate retreat. The overall effective mandibular retraction shortened the correction time, but also greatly reduced the difficulty of maxillary expansion. The compact structure of the occlusal plate does not affect the cementing of the upper and lower jaw dentition brackets, and is a more ideal device than the fixed trans-TBA.