基于CBCT数字化建模的3D打印牙颌模型制作及精确度研究
首发时间:2017-04-07
摘要:目的:基于CBCT数据构建患者数字化模型,应用3D打印技术制作牙颌实体模型并评估其精确度。方法:通过Mimics10.01软件处理正畸临床患者CBCT数据,并结合Geomagic studio三维软件制作牙颌数字化模型,导入MakerBot Replicator2X型3D打印机中,采用熔融沉积技术(FDM)制作聚乳酸材料的上下颌实体模型。比较3D打印模型与传统石膏模型的牙冠近远中径、牙弓长度及牙弓宽度测量值。结果:3D打印牙颌模型和传统石膏模型的测量数据经配对样本t检验,无统计学差异(P>0.05)。结论:1.采用CBCT构建数字化模型具有可行性,能够简化正畸检查流程、实现患者牙颌状况的数字化存储。2.采用3D打印制作牙颌模型精确度良好,可用于正畸临床。
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Fabrication and Accuracy analysis of 3D-printing dental model based on CBCT modeling
Abstract:Objective: The aim of this study was to build digital dental model with CBCT, fabricate virtual model via 3D printing, and determine the accuracy of 3D printing dental model by comparing with traditional dental cast. Methods: Cone beam computed tomographies (CBCT) of orthodontic patients were obtained to build digital dental model by using Mimics 10.01 software and Geomagic studio software. The 3D virtual models were fabricated via fused deposition modeling technique (FDM) and were compared with the traditional cast models by using the vernier caliper. The measurements included the width of each tooth, the length and width of the maxillary and mandibulary arch. Results: 3D printing models own high accuracy compared with traditional cast models. The paired t test of all the data showed that no statistically significant difference was observed between the two groups (P>0.05). Conclusion: 1) Dental digital models built with CBCT realize the digital storage of patients' dental condition. Virtual dental model fabricated via 3D printing avoid traditional impression and simplify the clinical examination process. 2) The 3D printing dental models manufactured via FDM have a high degree of accuracy and is fit for the clinical practice.
Keywords: digital dental model CBCT 3D printing technique
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