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J Endod:上颌4根管磨牙采用waveone gold系统预备顺序的影响

2020-06-28 lishiting MedSci原创

这篇研究的目的是为了评估使用WaveOne Gold? Primary (WOG 25.07)预备4根管上颌磨牙的顺序对于体积变化、器械形变、疲劳强度和预备时间的影响。

这篇研究的目的是为了评估使用WaveOne Gold? Primary (WOG 25.07)预备4根管上颌磨牙的顺序对于体积变化、器械形变、疲劳强度和预备时间的影响。

研究选择48颗人上颌4根管恒磨牙,并按照根管预备的顺序不同分为4组:近颊(MB) - 远颊(DB) - 腭(P) - 第二近颊(MB2); DB-P-MB2-MB; P-MB2-MB-DB和MB2-MB-DB-P。在预备前后使用micro-CT扫描以获取根管最初和最终的体积变化。也采用SEM扫描观察器械在预备后的磨损和形变情况,并记录预备时间。数据进行统计学分析,显著性水平设置为5%。

结果显示,各组使用WOG系统预备后根管的体积变化和预备时间没有显著性差异(p > 0.05);然而,各组预备后器械形变存在明显不同。MB-DB-P-MB2和P-MB2-MB-DB相比较,后者存在更明显的器械形变。

结论:根管预备的顺序会影响器械发生形变,但并不影响WOG系统预备后根管的体积变化和预备时间。为了最小化器械发生形变,预备顺序应该为MB- DB-P-MB2。

原始出处:

Carlla Sloane Alberton, Flávia Sens Fagundes Tomazinho, et al. Influence of the Preparation Order in 4-canals Maxillary Molars With WaveOne Gold System. J Endod., 2020 Jun 9;S0099-2399(20)30381-2. doi: 10.1016/j.joen.2020.05.018.

 

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