Karaharju-Suvanto T
Department of Paedodontics and Orthodontics, University of Helsinki, Finland.
Dentomaxillofac Radiol. 1994 Aug;23(3):159-62. doi: 10.1259/dmfr.23.3.7835517.
Gradual distraction after osteotomy has been used both clinically and experimentally to lengthen the mandible. In this experimental study in sheep, the changes in dimensions after osteotomy and gradual distraction were analysed by means of cephalometry. There was a strong correlation between the amount and duration of distraction and the increase in length of the mandible. The difference in length between the operated and control sides persisted for up to 1 year. It was concluded that new bone was deposited and that the increase in length of the mandible was real and permanent.
截骨术后逐步牵引已在临床和实验中用于下颌骨延长。在这项针对绵羊的实验研究中，通过头影测量法分析了截骨术和逐步牵引后尺寸的变化。牵引的量和持续时间与下颌骨长度的增加之间存在很强的相关性。手术侧与对照侧之间的长度差异持续长达1年。得出的结论是有新骨沉积，并且下颌骨长度的增加是真实且永久性的。
