Bousdras Vasilios A, Liyanage Chandra, Mars Michael, Ayliffe Peter R
Department of Maxillofacial, Great Ormond Street Hospital, London, UK.
Ann Maxillofac Surg. 2014 Jan;4(1):60-3. doi: 10.4103/2231-0746.133067.
Treatment of a wide alveolar cleft with initial application of segmental distraction osteogenesis is reported, in order to minimise cleft size prior to secondary alveolar bone grafting. The lesser maxillary segment was mobilised with osteotomy at Le Fort I level and, a novel distractor, facilitated horizontal movement of the dental/alveolar segment along the curvature of the maxillary dental arch. Following a latency period of 4 days distraction was applied for 7 days at a rate of 0.5 mm twice daily. Radiographic, ultrasonographic and clinical assessment revealed new bone and soft tissue formation 8 weeks after completion of the distraction phase. Overall the maxillary segment did move minimising the width of the cleft, which allowed successful closure with a secondary alveolar bone graft.
报道了采用节段性牵张成骨术初步治疗宽牙槽裂，以便在二期牙槽骨植骨前减小裂隙大小。通过在Le Fort I水平进行截骨术来移动较小的上颌骨段，并使用一种新型牵张器，促进牙/牙槽段沿上颌牙弓曲度进行水平移动。在4天的延迟期后，以每天0.5毫米、每天两次的速率进行7天的牵张。影像学、超声检查和临床评估显示，牵张阶段完成8周后有新骨和软组织形成。总体而言，上颌骨段确实发生了移动，使裂隙宽度最小化，从而能够成功地用二期牙槽骨植骨进行闭合。
