【摘要】 随着我国医疗体系的不断发展和医疗技术水平的不断提升，锥形束CT(cone-beam computed tomography，CBCT)技术成为了当下根管治疗中常用的一种新型技术，能够让医师更全面地对磨牙根管系统的解剖结构、形态进行分析，从而提高患者的治疗效果。因此，CBCT对于牙根管系统的研究具有重要意义。

    【关键词】 锥形束CT 上颌第三磨牙 根管系统

    [Abstract] With the continuous development of medical system and the improvement of medical technology level in our country， cone-beam computed tomography (CBCT) technology has become a new technology commonly used in root canal therapy at present， which can enable doctors to analyze the anatomical structure and morphology of root canal system of molar in a more comprehensive way ......