人体颌骨三维模型重建及种植牙的仿真

Reconstruction of human mandible 3D model and simulation of dental implant

利用螺旋CT扫描技术获得的人体下颌骨扫描数据,通过与快速成型,UG/Imageware逆向工程等技术相结合,在计算机上重建一个可编辑的三维实体模型,在重建模型中分别进行体绘制、面绘制以及三维测量,并选取理想植入点,记录理想植入点坐标数据和定位点的坐标数据,并模拟牙种植手术,在UG中对其进行种植体数控仿真,将仿真结果经过坐标换算后,导入数控机床加工。在计算机上重建了一个可编辑的三维实体模型,它具有精确度高,可编辑等特点,并且可以直接用于实体的生物制造。提示结合CT三维重建技术与计算机辅助设计制造技术,让医生在术前对患者颌骨有全面的、三维方向的认识,方便医生确定手术方案,提高手术的成功率。

Human body mandible scanning data were obtained using spiral CT scanning technology. By combining with rapid prototyping and UG/Imageware reverse engineering technology, adaptable 3D solid model was reconstructed on the computer, followed by volume rendering, surface rendering as well as three-dimensional measurement, separately. Ideal location of the insertion was selected. The coordinate data of ideal location of the insertion and locating points were record, and by simulating the dental implant surgery, numerical control simulation was performed to planters in UG. The simulation results were input the numerical control machine tool to process after the coordinate transform. An editable 3D solid model was constructed by computer with high accuracy, which can be edited and directly applied in biological manufacturing. Combining CT three-dimensional reconstruction technology and computer aided design and manufacturing, dentists could have comprehensive three dimensional understanding to mandible, which facilitates dentists to determine surgery plan, and increases the success ratio of surgery.