应用快速原型技术辅助下颌骨缺损重建手术

在采用自体腓骨重建下颌骨缺损的手术中,为了弥补传统手术方式和术后外形的不足,利用病人的CT数据制作出个性化定制的下颌骨快速原型模型,术前模拟重建手术后效果.手术前,按照病人下颌骨RP模型将钛板弯制成形,并作为手术中的下颌骨外形模板.下颌骨RP模型的使用大大提高了重建下颌骨的成型精度,同时明显减短手术时间,由原来腓骨塑形手术时间4～5h缩短到1.0～1.5h.应用RP技术辅助下颌骨缺损重建手术值得推广.

Reconstruction Surgery of Defective Mandibule by the Aid of Rapid Prototyping Technique

To perfect the traditional surgery and postoperational figuration in reconstruction surgery of defective mandibule with the autologous fibula flap used, a rapid prototyping (RP) model for customized mandible was developed on the basis of patient's CT data to simulate the result of the reconstruction surgery. According to the model, a piece of titanium plate was shaped before the surgery as the outline template for the mandible during operation. With the RP model applied to mandibule, the figuration precision of reconstructed mandible was improved greatly and, especially, the original fibular shaping time 4~5 hr was shortened to 1.0~1.5 hr, i.e., the whole operating time decreased to a great extent. The RP technique is therefore proved worthy to extend for the reconstruction surgery of defective mendibule.