J Endod:CBCT分析亚洲及白种人群牙根和根管结构的差异

2018-06-10 lishiting MedSci原创

不同地区的人群以及不同的种族背景会引起牙齿形态结构的差异。这篇研究的目的是为了通过锥形束CT影像分析比较亚洲和白种人群牙根及根管结构的差异。

不同地区的人群以及不同的种族背景会引起牙齿形态结构的差异。这篇研究的目的是为了通过锥形束CT影像分析比较亚洲和白种人群牙根及根管结构的差异。

研究分别从中国及西欧的2个CBCT数据库中恢复了亚洲和白种人群的信息数据。由2名独立的观察者从所有组别的牙齿中按照牙根数量以及Vertucci根管系统结构收集数据。研究共对15,655颗牙齿进行评估。使用z检验对各独立组进行组间差异的比较。显著性水平设置为P value < .05。在观察者之间进行可靠性试验评估。

结果显示,在6组牙齿中,每个牙齿的牙根数量存在差异。亚洲人组上颌第一前磨牙和下颌第二磨牙的单根结构发生率分别为83.2%和45.4%,与白种人的48.7%和14.3%相比明显增高。并且,亚洲人下颌第一磨牙的3根结构的发生率(25.9%)要显著高于白种人(2.6%)。对亚洲人的20个牙根进行分析,其中有17个牙根展现出Vertucci I型结构,发生率较高。白种人上颌第一磨牙的MB2发生率明显高于亚洲人(分别为71.3%和58.4%)。而上颌第二磨牙情况相似。

结论:亚洲种群Vertucci I型结构的发生率较高,而白种人则展现出较高数量的多根管系统结构。临床医师在接诊这些不同种群患者时需要注意这些差异变化。

原始出处:

Martins JNR, Gu Y, et al. Differences on the Root and Root Canal Morphologies between Asian and White Ethnic Groups Analyzed by Cone-beam Computed Tomography. J Endod. 2018 Jun 1. pii: S0099-2399(18)30239-5. doi: 10.1016/j.joen.2018.04.001.

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    2018-06-12 智慧医人
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