基于X线和激光扫描的颅面部三维重建与手术模拟系统的研究

摘要

牙颌面畸形的发病与治疗均涉及颅面部颌骨、牙齿、软组织的三维空间结构改变,对颅面部形态进行三维的测量与分析多年来一直是国内外学者研究的热点问题.目前,对于单一组织都能较为精确捕获它们的三维信息,但是单一组织不能全面反映颅颌面各部分之间的解剖关系,因此多结构多方法联合重建成为形态学研究的方向.本课题组用头颅定位X线片和激光扫描获取颅面部软硬组织图像数据,研究开发颅面部软硬组织三维重建及正颌手术模拟、预测系统,为颅面畸形的诊断、治疗方案确定和定量控制、预后评估提供新的途径.%Craniofacial malformation was related to the shape and structure of the teeth, jaws and face.Assessment of craniofacial complex in three-dimensional (3D) has long been a focus for many researchers.At present, 3D imaging techniques could reconstruct the craniofacial soft tissue or hard tissue successfully.However, they couldn't reflect the comprehensive structure of craniofacial complex.For the study of the craniofacial complex, combination of 3D imaging techniques provides a promising way toward optimum 3D imaging.The purpose of this study was to reconstruct the 3D images of craniofacial hard and soft tissue based on cephalograms and laser scanning, to found the 3D measurement and orthngnathic simulation and forecast system, which may provide a new method for analyzing of craniofacial mafformarion, and for the quantity control and evaluation of treatment results in the orthodontic treatment, orthopedics and plastic operation.