Jansma Johan, Bierman Michiel W J, Becking Alfred G
Department of Oral and Maxillofacial Surgery, University Hospital Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands.
Br J Oral Maxillofac Surg. 2004 Dec;42(6):526-31. doi: 10.1016/j.bjoms.2004.08.005.
Seven children with facial asymmetry, mean age 12 years (range 11-14.5) were treated by intraoral distraction osteogenesis to lengthen the hypoplastic ramus. We achieved a mean increase in length of the ramus of 13mm (range 10-16). In only one patient did we achieve a posterior open bite on the distraction side. All patients ended with a symmetrical chin. It was helpful to place an orthodontic bite block on the opposite side either preoperatively or postoperatively to cant the plane of occlusion. The duration of follow-up was too short to allow conclusions to be drawn about the future requirement for bimaxillary osteotomies.
7名面部不对称儿童，平均年龄12岁（范围11 - 14.5岁），接受了口内牵引成骨术以延长发育不全的下颌升支。我们实现了下颌升支长度平均增加13mm（范围10 - 16mm）。仅1例患者在牵引侧出现了后部开牙合。所有患者最终都获得了对称的下巴。术前或术后在对侧放置正畸咬块以倾斜咬合平面很有帮助。随访时间过短，无法得出关于未来双颌截骨术需求的结论。
