口腔医学研究

口腔医学研究 ›› 2015, Vol. 31 ›› Issue (6): 601-603.

• 临床研究论著 • 上一篇    下一篇

CBCT根管形态三维容积重建可视化技术的研究

朱敏1, 林梓桐2, 文珊辉2, 刘澍2, 王铁梅2*   

  1. 1. 南京大学医学院附属口腔医院口腔颌面医学影像科 江苏 南京 210008;
    2. 南京大学医学院附属口腔医院牙体牙髓科
  • 收稿日期:2014-11-20 出版日期:2015-06-28 发布日期:2016-04-29
  • 通讯作者: 王铁梅,电话:025—83620351
  • 作者简介:朱敏(1977~ ),女,江苏人,主治医师,硕士,主要从事牙体牙髓病学临床及基础的研究工作。
  • 基金资助:
    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)

Visualization of Root Canal Morphology with Volume Rendering Technique Based on CBCT Images.

ZHU Min, LIN Zi-tong, Wen Shan-hui, et al.   

  1. Department of Oral and Maxillofacial Radiology, Affiliated Stomatologic Hospital, Medical College, Nanjing University, Nanjing 210008
  • Received:2014-11-20 Online:2015-06-28 Published:2016-04-29

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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。

关键词: 锥形束CT, 根管形态, 容积重建

Abstract: Objective: To explore volume rendering technique of root canal morphology based on CBCT images. Methods: 32 mandibular incisors with complete root and apex and without endodontic treatment were collected and 8 patients with 32 mandibular incisors all the CBCT images were scanned at HZ mode for volume rendering. Before reconstruction, the root canal morphology was evaluated using the axial images and images using multiple planar reconstruction(MPR) technique. Simplant was used for indirect volume rendering. The number of root canal was evaluated based on the reconstructed images. Results: The accuracy of evaluation of root number for mandibular incisors was 96.9% in vitro and 93.4% in vivo with VR technique. There were no significant differences between MPR and VR for evaluation the number of root canal using fisher's exact test. Conclusion: VR technique is a visual and accurate method to show a second canal for mandibular incisors.

Key words: Cone beam, CT , Root canal morphology , Volume rendering

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