J Endod:CEC对于根管去感染和成形的影响

2020-03-28 lishiting MedSci原创

MIE对于根管去龋的影响还未可知。这篇体外研究的目的是为了比较收缩髓腔洞型(CEC)与常规髓腔洞型根管去感染和成形之间的差异。

MIE对于根管去龋的影响还未可知。这篇体外研究的目的是为了比较收缩髓腔洞型(CEC)与常规髓腔洞型根管去感染和成形之间的差异。

研究选取具有椭圆形根管的下颌切牙并通过micro-CT影像分析进行解剖匹配,随后随机分为2组。分别预备保守型和常规型的髓腔入路,并且只通过粪肠球菌感染根管30天。采用XP-endo Shaper instrument (FKG Dentaire, La Chaux-de-Fonds, Switzerland)和2.5%次氯酸钠冲洗进行2组牙齿的根管预备。在预备前后提取根管内细菌样本,提取DNA并进行定量聚合酶链式反应。在预备前后进行micro-CT扫描观察以评估成形情况。采用Poisson regression model 和chi-square检验以及Yates correction对细菌数据进行统计学评估。通过Wilcoxon, Mann-Whitney和Student t检验对micro-CT数据进行统计学分析,显著性水平设置为5%。

结果显示,所有初始样本粪肠球菌检测均呈阳性。预备后,收缩型窝洞组内细菌阳性样本的数量(25/29, 86%)明显高于常规型窝洞组(14/28, 50%) (P < .01)。组间定量比较分析显示,常规型窝洞组细菌计数显著减少(P < .01)。Micro-CT数据显示,2组未预备区域之间未见显著性差异。

结论:结果显示,虽然应用适当的器械在2组间可获得相似的成形能力,但是采用收缩型窝洞实施根管预备的牙齿其去感染效果显著降低。

原始出处:

Gaya C S Vieira, Alejandro R Pérez, et al. Impact of Contracted Endodontic Cavities on Root Canal Disinfection and Shaping. J Endod., 2020 Mar 19[Online ahead of print]

 

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    2020-04-28 仁医06
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    2020-03-30 liye789132257
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    2020-03-28 1209e435m98(暂无昵称)

    学习了,谢谢分享

    0

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    2020-03-28 14896c39m52(暂无昵称)

    干货满满

    0

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    2020-03-28 14896c39m52(暂无昵称)

    学习了

    0

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