Oh Seung-Min, Lee Chang-Yoen, Kim Ju-Won, Jang Chang-Su, Kim Jwa-Young, Yang Byoung-Eun
From the Department of Oral and Maxillofacial Surgery, School of Medicine, Hallym University, Anyang, South Korea.
J Craniofac Surg. 2013 Sep;24(5):1535-8. doi: 10.1097/SCS.0b013e31829028be.
Changes in the condylar position after bilateral sagittal split ramus osteotomy (BSSO) can cause many complications, such as condylar dysfunction and increased risk of relapse. This study evaluated a simple approach for condylar repositioning in BSSO as a method to rapidly obtain the patient's centric relation (CR) bite position without prefabricated equipment.
The study subjects included 9 patients (5 men and 4 women; mean age, 23.7 years) who underwent BSSO in the Department of Oral and Maxillofacial Surgery in Hallym University hospital between December 2009 and March 2012. We performed BSSO with the condylar-repositioning method according to the patient's CR bite.
Measurements of changes in the condylar position via radiographic images (lateral cephalometric radiographs) did not indicate significant differences after surgery (P < 0.05). In surveys of temporomandibular joint symptoms, the scores for categories (sound, pain, mouth opening limitation) also did not show any increases after surgery.
Within a standard operating time, the condyle was effectively repositioned using the condylar-repositioning method described in this study. These results indicate this new repositioning method is simple and eliminates the need for any additional device.
双侧矢状劈开下颌支截骨术（BSSO）后髁突位置的改变可引发诸多并发症，如髁突功能障碍及复发风险增加。本研究评估了一种BSSO中髁突重新定位的简单方法，作为一种无需预制设备即可快速获取患者正中关系（CR）咬合位置的手段。
研究对象包括9例患者（5名男性和4名女性；平均年龄23.7岁），他们于2009年12月至2012年3月期间在翰林大学医院口腔颌面外科接受了BSSO。我们根据患者的CR咬合情况采用髁突重新定位方法进行BSSO。
通过影像学图像（侧位头影测量片）测量髁突位置的变化，术后未显示出显著差异（P < 0.05）。在颞下颌关节症状调查中，各分类（弹响、疼痛、张口受限）的评分术后也未出现任何增加。
在标准手术时间内，使用本研究中描述的髁突重新定位方法可有效重新定位髁突。这些结果表明这种新的重新定位方法简单且无需任何额外设备。
