J Endod:115颗上颌**前磨牙根管系统结构和形态的体外研究

2020-04-24 lishiting MedSci原创

这篇研究的目的是通过mciro-CT影像分析评估瑞士-德国人群上颌第一前磨牙根管系统的形态。

这篇研究的目的是通过mciro-CT影像分析评估瑞士-德国人群上颌第一前磨牙根管系统的形态。

研究通过micro-CT和3维影像观察和分析115颗上颌第一前磨牙(Mx1Ps)根管系统的结构(RCC)。通过4位系统代码描述RCC和生理性根尖孔结果。

结果显示,30颗单根Mx1Ps共发现12种不同的RCCs;最常出现的类型为2-2-2/2 (30.0%), 1-2-2/2 (13.3%), 1-2-1/2 (10%)和2-2-1/2 (10.0%)。在2个根的Mx1Ps (n = 81)中发现7种RCCs,颊根RCCs最常出现的类型为1-1-1/1 (56.8%), 1-1-1/2 (29.6%)和1-1-2/2 (8.6%),腭根为1-1-1/1 (92.6%)和1-1-1/2 (6.2%)。3根Mx1Ps (n = 4)所有根RCC的类型均为1-1-1/1 (100.0%)。2根Mx1Ps颊根管具有1个生理性根尖孔的比例为59.3%,2个的为40.7%,存在1-6个副孔的比例为38.2%。腭根管存在1个生理性根尖孔的比例为93.8%,2个的为6.2%,存在1-2个副孔的比例为14.8%。单根Mx1Ps存在1个生理性根尖孔的比例为10.0%,2个的为70.0%,3个的为13.3%,4个的为6.7%,存在1-3个副孔的比例为46.7%。

结论:这篇研究提供了瑞士-德国人群Mx1Ps RCC形态的详细信息。单根的Mx1Ps呈现出根管系统形态多样性的比例明显高于2或3根Mx1Ps。在2根Mx1Ps中,颊根管呈现出更高的RCC多样性、副根管,并且其根尖孔的数量多于腭根管。

原始出处:

Thomas Gerhard Wolf, Christoph Kozaczek, et al. An Ex Vivo Study of Root Canal System Configuration and Morphology of 115 Maxillary First Premolars. J Endod., 2020 Apr 13;S0099-2399(20)30150-3. doi: 10.1016/j.joen.2020.03.001.

 

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