Department of Cranio-Maxillofacial Surgery, Maastricht University Medical Center, P. Debyelaan, Postbus 5800, NL-6202 AZ Maastricht, The Netherlands.
J Craniomaxillofac Surg. 2012 Jan;40(1):43-6. doi: 10.1016/j.jcms.2011.01.007. Epub 2011 Feb 5.
The aim of this study was to evaluate the use of model mandibles made preoperatively by additive manufacturing, which were used to prebend reconstruction plates prior to mandibular resection and reconstruction with microvascular bony flaps.
Computer Tomography (CT) or Cone Beam Tomography (CBT) scans acquired preoperatively were used to obtain DICOM data sets to produce a model of the mandible using rapid prototyping. This model was used as a template to prebend and then sterilize a 2.3 or 2.7 reconstruction plate, which was used to reconstruct the mandible with a microvascular bony flap. This technique was used in 20 consecutive patients who required mandibular resection and reconstruction because of a tumour or osteoradionecrosis.
The prebent plate was used in all patients intraoperatively without the need for any further bending. The average time to bend a plate on a nonsterile model was 0.42 h (range 0.25-0.68 h). This is felt to represent the minimum amount of time saved during the operation. Additive manufacture of the mandible prior to resection and reconstruction with a microvascular flap is a useful technique which reduces the operating time.
本研究旨在评估术前通过增材制造制作模型下颌骨的应用，这些模型下颌骨用于在进行下颌骨切除和带有微血管骨瓣的重建之前预弯重建板。
术前获取的计算机断层扫描（CT）或锥形束 CT（CBT）扫描用于获取 DICOM 数据集，以便使用快速原型制作下颌骨模型。该模型用作模板，预弯并消毒 2.3 或 2.7 重建板，然后使用该板通过带有微血管骨瓣进行下颌骨重建。这项技术在 20 例因肿瘤或放射性骨坏死而需要进行下颌骨切除和重建的连续患者中得到应用。
术中所有患者均使用预弯板，无需进一步弯曲。在非无菌模型上弯曲一个板的平均时间为 0.42 小时（范围 0.25-0.68 小时）。这被认为是手术中节省的最小时间。在进行带有微血管皮瓣的下颌骨切除和重建之前，对下颌骨进行增材制造是一种有用的技术，可以减少手术时间。
