应用快速成型技术制备个体化牵张器

Preparation of Individual Distractor by Rapid Prototyping Technology

目的:探索应用快速成型技术定制个体化牵张器的方法。方法:5例实验用犬,获取CT扫描头部影像数据后进行影像三维重建,应用快速成型技术制作犬头骨模型,根据模型进行定制犬下颌骨个体化弧形牵张器。然后将牵张器安放于犬下颌骨。结果:个体化牵张器与模型高度吻合,体外模型模拟牵张过程顺利,手术过程快捷,伤口一期愈合。结论:应用快速成型技术对个体化牵张器的设计、制造有极大的辅助作用,与原有骨骼高度吻合,可有效提高手术速度,提高手术成功率。

Objective：To investigate a method for manufacture customized 3D-director using 3D reconstruction of CT images and rapid prototyping（RP） technique.Methods：5 dogs were involved.First,CT scanning was performed for the maxillofacial image data acquisition.After 3-dimensional reconstruction,prosthesis model was made using RPMachine.Then customized Titanium3D-director was manufactured according to the prosthesis model.Then directors was implantated on the mandibular of dogs.Results：The directors were fit for the prosthesis mode.The imitation process of distraction osteogenesis on the in vitro mode was smooth and the opration was processed smoothly too.Conclusion：RP technique is feasible and effective for manufacture customized 3D-director.It can fulfill the requirement of precision for director,especially for 3D-director.