Resten A, Guédon C, Piekarski J D, Laffite F
Service de radiologie, Fondation Ophtalmologique Rothschild, Paris.
J Radiol. 1998 Sep;79(9):871-6.
Extended mandibular defects resulting from cancer resection are amenable to reconstruction with a free vascularized bone graft transplantation. Between 1992 and 1995, 12 patients were enrolled in a protocol including a preoperative 3D-CT used to develop a custom-made acrylic model of the mandible. Besides contributing to the assessment of tumor extension, 3D-CT helps determine the adequate limits of mandibular resection. 3D-CT has the advantage of providing the surgeon with a more familiar image of the mandible and the mandibular model, allowing better and quicker conformation of the bone flap. The graft can be shaped at the donor site before cutting its vascular pedicle, resulting in a shorter period of ischemia. This series demonstrated that preoperative mandibular modeling with 3D-CT helps improve functional and cosmetic results in mandibular reconstruction.
癌症切除导致的下颌骨大范围缺损适合采用带血管游离骨移植进行重建。1992年至1995年间，12例患者纳入一项方案，该方案包括术前使用三维计算机断层扫描（3D-CT）制作定制的下颌骨丙烯酸模型。除了有助于评估肿瘤范围外，3D-CT还有助于确定下颌骨切除的合适边界。3D-CT的优势在于为外科医生提供更熟悉的下颌骨及下颌骨模型图像，从而能更好、更快地塑形骨瓣。移植物可在切断其血管蒂之前在供区塑形，从而缩短缺血时间。该系列研究表明，术前采用3D-CT进行下颌骨建模有助于改善下颌骨重建的功能和美容效果。
