Reininger David, Rodriguez-Grandjean Alfredo, López-Quiles Juan
Int J Oral Maxillofac Implants. 2016 Jul-Aug;31(4):865-9. doi: 10.11607/jomi.4424.
The aim of this study was to evaluate the degree of resorption that occurs following a period of consolidation in alveolar distraction osteogenesis and assess the amount of overcorrection necessary to achieve the planned height.
A retrospective observational study was conducted comprising 19 surgically treated patients, where a total of 19 extraosseous distractors were placed. All patients undergoing surgery had a panoramic radiograph and a computed tomography scan, both at the end of distraction and at the end of the consolidation period. To assess the degree of resorption, the distance from the mandibular border, maxillary sinus floor, or nasal floor to the limit of the crestal bone following consolidation was compared with the height recorded at the end of the distraction period.
Resorption occurred in all cases ranging from 7% to 25%.
The presence of resorption reported from this study indicates that an overcorrection of at least 20% may be necessary when distraction osteogenesis is performed.
本研究的目的是评估牙槽骨牵张成骨巩固期后发生的吸收程度，并评估实现计划高度所需的过度矫正量。
进行了一项回顾性观察研究，包括19例接受手术治疗的患者，共放置了19个骨外牵张器。所有接受手术的患者在牵张结束时和巩固期结束时均进行了全景X线片和计算机断层扫描。为了评估吸收程度，将巩固后下颌骨边界、上颌窦底或鼻底至牙槽嵴骨极限的距离与牵张期结束时记录的高度进行比较。
所有病例均发生吸收，吸收范围为7%至25%。
本研究报告的吸收情况表明，进行牵张成骨时可能需要至少20%的过度矫正。
