J Endod:世界范围内上颌**磨牙近中第二颊根发生率的评估:一项多中心的CBCT分析

2018-10-16 lishiting MedSci原创

上颌第一磨牙的第二近颊根管(MB2)发生率在不同人群中可能发生着变化。这篇研究的目的是通过体内锥形束CT(CBCT)评估世界范围内MB2的发生率,并了解它可能与性别、年龄、侧面和根管结构的相关性。

上颌第一磨牙的第二近颊根管(MB2)发生率在不同人群中可能发生着变化。这篇研究的目的是通过体内锥形束CT(CBCT)评估世界范围内MB2的发生率,并了解它可能与性别、年龄、侧面和根管结构的相关性。观察者从21个不同地域标定以获得相似的CBCT观察方法,并从250颗之前就已进行检查的上颌第一磨牙处收集数据。对测试者之间以及之内进行评估。样本量为5250颗磨牙,并通过初审来界定。所收集的数据包括:MB2的存在与否、性别、年龄、侧面、每颗牙齿牙根的数量和近中颊根的结构。使用z检验评估各独立组百分比,以此来分析各亚组之间的差异。显著性设置为P < .05。结果显示,世界范围内CBCT分析的MB2发生率为73.8%,范围从委内瑞拉的48.0%到比利时的97.6%。男性和女性的发生率分别为76.3%和71.8% (P < .05)。年轻患者中以及3根结构牙齿的MB2发生的比例更高。组同类相关系数和MB2确切存在的百分比分别为0.95和0.91。所有观察者的测试者之间Cohen kappa值高于0.61。结论:MB2在所检测的区域内变化广泛。差异可能与地域以及人口统计数据相关联。男性、年

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    2018-11-26 13718711b3m

    很不错的临床经验总结,非常实用,学习了,获益匪浅,感谢分享!

    0

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    2018-11-19 Rossolimo

    有理有据

    0

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    2018-10-18 智慧医人
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    2018-10-18 docwu2019
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