Howlader Debraj, Bhutia Dichen P, Vignesh U, Mehrotra Divya
Department of Oral and Maxillofacial Surgery, King George's Medical University, Lucknow, Uttar Pradesh, India.
J Oral Biol Craniofac Res. 2016 Sep-Dec;6(3):241-245. doi: 10.1016/j.jobcr.2016.05.002. Epub 2016 Jun 18.
Facial asymmetry is one of the commonest facial anomalies, with reported incidence as high as 34%. Hemifacial microsomia (HFM) has an incidence of 1 in every 4000-5600 children and is one of the commonest causes of facial asymmetry. The standard treatment of HFM is orthognathic surgery by bilateral saggital split osteotomy (BSSO) or distraction osteogenesis (DO) of the mandible, both of which involve prolonged periods of occlusal adjustments by an orthodontist. Here, we present distraction of the mandible by means of a novel modified step osteotomy to correct the facial asymmetry in a case of hemifacial microsomia without disturbing the occlusion. This novel technique can prove to be a new tool in the maxillofacial surgeons armamentarium to treat facial asymmetry.
面部不对称是最常见的面部畸形之一，报告发病率高达34%。半侧颜面短小畸形（HFM）在每4000 - 5600名儿童中的发病率为1例，是面部不对称最常见的原因之一。HFM的标准治疗方法是通过双侧矢状劈开截骨术（BSSO）或下颌骨牵张成骨术（DO）进行正颌手术，这两种方法都需要正畸医生进行长时间的咬合调整。在此，我们介绍一种通过新型改良阶梯截骨术进行下颌骨牵张，以纠正半侧颜面短小畸形病例中的面部不对称，同时不干扰咬合。这种新技术可证明是颌面外科医生治疗面部不对称的新工具。
