目的通过三维激光扫描、CAD、快速成型技术,建立唇腭裂患者齿槽区精确的数字三维模型,并快速成型制作三维实体模型。方法随机选取上海市第九人民医院10例唇腭裂患者,取齿槽区石膏模型,经三维激光扫描、CAD软件处理、快速成型等步骤,制作齿槽区三维实体模型。结果对传统石膏模型和数字三维实体模型的裂隙曲线进行测量比对,数字三维实体模型精确度达97.7%～99.01%,平均精确度为98.51%。结论通过快速成型技术建立唇腭裂齿槽区的精确化数字三维实体模型可替代石膏模型,对于病情判断、术前分析模拟以及未来新型唇腭裂术前矫形器的研发具有重要意义。

Objective To establish exact 3D model and Solid model of cleft lip and palate by 3D laser scanning,CAD and rapid prototyping technology.Methods Ten patients of cleft clip and palate were in this study.Their alveolar bone models were got.The 3D solid model was made by 3D laser scanning,CAD and RP.Results Through 3D digital model and solid model,relative accuracy to the model was achieved of 97.7%-99.01%.Conclusion Accurate 3D solid model can be manufactured to substitute dental plaster models through RP technology.It is more important to the preoperative ananysis,the plan of operation and invention of orthosis.