Rao Janardhan Sruthi, Kotrashetti S M, Lingaraj J B, Pinto P X, Keluskar K M, Jain Siddharth, Sone Piyush, Rao Santhosh
Department of Oral & Maxillofacial Surgery, Rishiraj College of Dental Sciences & Research Centre, Bhopal, India;
Sultan Qaboos Univ Med J. 2013 Aug;13(3):454-9. Epub 2013 Jun 25.
Orthognathic surgery and distraction osteogenesis play a prime role in the correction of maxillary hypoplasia in patients with cleft lip and palate (CLP). Advancement of the anterior maxilla alone without interfering with the velopharyngeal sphincter may be advantageous in cleft patients, who more commonly have speech deficits and dental crowding. We present a case series of anterior maxillary segmental distraction for maxillary hypoplasia in 5 CLP patients with a one-year follow-up. A custom-made tooth-borne distraction device with a hyrax screw positioned anteroposteriorly was used. The evaluation comprised of hard and soft tissue analysis and speech assessment. A stable occlusion with positive overjet and correction of dental-crowding without extraction was achieved at one year post-distraction. Facial profile and lip support improved. There was no deterioration in speech.
正颌外科手术和牵张成骨术在唇腭裂（CLP）患者上颌骨发育不全的矫治中起着主要作用。对于唇腭裂患者而言，单纯推进上颌前部而不干扰腭咽括约肌可能具有优势，因为这些患者更常出现言语缺陷和牙列拥挤。我们报告了一组5例唇腭裂患者上颌前部节段性牵张治疗上颌骨发育不全的病例系列，并进行了为期一年的随访。使用了一种定制的牙支持式牵张装置，其Hyrax螺钉沿前后方向定位。评估包括硬组织和软组织分析以及言语评估。牵张后一年实现了稳定的咬合，有正向覆盖且无需拔牙即可矫正牙列拥挤。面部轮廓和唇部支撑得到改善。言语功能没有恶化。
