van Loon B, van Heerbeek N, Bierenbroodspot F, Verhamme L, Xi T, de Koning M J J, Ingels K J A O, Bergé S J, Maal T J J
Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; 3D Facial Imaging Research Group Nijmegen-Bruges, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands.
Department of Otorhinolaryngology, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands.
Int J Oral Maxillofac Surg. 2015 Jan;44(1):83-9. doi: 10.1016/j.ijom.2014.08.001. Epub 2014 Sep 11.
Orthognathic surgery aims to improve both the function and facial appearance of the patient. Translation of the maxillomandibular complex for correction of malocclusion is always followed by changes to the covering soft tissues, especially the nose and lips. The purpose of this study was to evaluate the changes in the nasal region and upper lip due to orthognathic surgery using combined cone beam computed tomography (CBCT) and three-dimensional (3D) stereophotogrammetry datasets. Patients who underwent a Le Fort I osteotomy, with or without a bilateral sagittal split osteotomy, were included in this study. Pre- and postoperative documentation consisted of 3D stereophotogrammetry and CBCT scans. 3D measurements were performed on the combined datasets and analyzed. Anterior translation and clockwise pitching of the maxilla led to a significant volume increase in the lip. Cranial translation of the maxilla led to an increase in the alar width. The combination of CBCT DICOM data and 3D stereophotogrammetry proved to be useful in the 3D analysis of the maxillary hard tissue changes, as well as changes in the soft tissues. Measurements could be acquired and compared to investigate the influence of maxillary movement on the soft tissues of the nose and the upper lip.
正颌外科手术旨在改善患者的功能和面部外观。上颌下颌复合体的移位以矫正咬合不正，之后覆盖的软组织尤其是鼻子和嘴唇总会发生变化。本研究的目的是使用锥形束计算机断层扫描（CBCT）和三维（3D）立体摄影测量数据集相结合的方法，评估正颌外科手术导致的鼻区和上唇的变化。接受了Le Fort I截骨术（无论是否进行双侧矢状劈开截骨术）的患者纳入本研究。术前和术后记录包括3D立体摄影测量和CBCT扫描。对合并后的数据集进行3D测量并分析。上颌的向前移位和顺时针倾斜导致唇部体积显著增加。上颌的向上移位导致鼻翼宽度增加。CBCT DICOM数据和3D立体摄影测量相结合被证明在对上颌硬组织变化以及软组织变化的3D分析中是有用的。可以获取测量数据并进行比较，以研究上颌移动对鼻子和上唇软组织的影响。
