CBCT根管形态三维容积重建可视化技术的研究

发布时间：2018-05-10 23:17

本文选题：锥形束CT + 根管形态　；参考：《口腔医学研究》2015年06期

【摘要】：目的:探讨基于CBCT图像的根管形态三维容积重建可视化技术。方法:32颗牙根完整、根尖孔发育完成,未行牙髓治疗的离体下颌恒切牙以及8例牙隐裂患者进行CBCT高清模式扫描图像进行根管形态容积重建(volume rendering,VR)。在进行容积重建前,对选取的下颌恒切牙根管形态通过轴位图像和多平面重建(multiple planar reconstruction,MPR)评估确定其根管形态。将CBCT轴位图像以DICOM格式输入第三方软件Simplant进行根管形态容积三维重建并进行根管数目评估。结果:离体和在体条件下Simplant重建图像根管数目显示准确率分别为96.9%和93.4%,Fisher确切概率法检验显示与MPR法不具有显著性差异。结论:CBCT三维容积重建可视化技术可以直观准确的显示双根管下颌恒切牙。
[Abstract]:Objective: to explore the visualization technique of root canal shape 3D volume reconstruction based on CBCT image. Methods 32 permanent incisors of mandible without pulp treatment and 8 patients with occlusal teeth were examined with CBCT high-definition mode images for volume reconstruction of root canals. Before volume reconstruction, the root canal morphology of mandibular permanent incisor was evaluated by axial images and multiple planar reconstructionMPRs. The CBCT axial image was input into the third party software Simplant in DICOM format to reconstruct the root canal shape and volume and evaluate the number of root canals. Results: in vitro and in vivo, the accuracy rate of root canal number of Simplant reconstructed images was 96.9% and 93.4% respectively. There was no significant difference between MPR method and Fisher exact probability method. Conclusion the visualization technique of three-dimensional volume reconstruction with 7% CBCT can visualize the permanent incisors of the mandibular canals directly and accurately.
【作者单位】：南京大学医学院附属口腔医院口腔颌面医学影像科;南京大学医学院附属口腔医院牙体牙髓科;
【基金】：江苏省自然科学基金面上项目(编号:BK20141083) 江苏省南京市医学科技发展重点项目(编号:ZKX14049)
【分类号】：R816.98;R781.05

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