【摘要】 目的利用显微CT构建牙齿三维数字模型,将其运用到牙体解剖数字化教学中以提高教学质量。方法用SCANCO MicroCT μ80显微CT仪对离体牙进行高精度扫描和三维重建,构建牙齿不同结构的三维数字模型并组合重建,获得牙齿三维模型和数字图像。结果釉质的三维模型清楚地显示了釉质形态、解剖标志和釉质厚度的变化。髓腔根管的三维模型清楚地显示了髓腔、根管和侧枝根管的立体结构。牙齿整体的三维模型实现了在1个模型/图片上显示不同组成部分在整体中的位置、层次和形态特点。结论对牙齿进行显微CT扫描后获得的数字资料能够丰富牙体解剖数字化教学的内容,突破髓腔和根管解剖教学的瓶颈,提高教学的质量和效率。更多还原

【Abstract】 Objective Three-dimensional digital models of teeth,which were scanned and constructed with Micro-CT instrument,afforded plentiful data for dental anatomy teaching and improved the quality of teaching.Methods Some teeth were carried out high-resolution scanning with SCANCO MicroCT μ80 instrument.Different parts of teeth(enamel,pulp cavity and root canal) were reconstructed and combined together to form an intact tooth three-dimensional model.Results Enamel three-dimensional model illustrated surface structures and its changes in the thickness were clearly.Pulp cavity and root canal three -dimensional model displayed their morphologic changes and lateral canal.Three-dimensional model of teeth showed the overall performance characteristics.Conclusion Teeth digital data obtained from Micro-CT enriched the content of dental anatomy teaching,overcomed the teaching difficulties in pulp cavity and root canal anatomy,and improved teaching quality and efficiency grea-tly.更多还原