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J Endod:3种不同根管封闭剂的溶解性和pH值:一项长期调查研究

2018-11-01 lishiting MedSci原创

这篇研究的目的是为了在一段长期时间内比较硅酸三钙类封闭剂(BioRoot RCS [BR]), MTA类封闭剂(Fillapex [MTA])和环氧树脂类封闭剂(AH Plus [AH])的溶解性和pH值变化。

这篇研究的目的是为了在一段长期时间内比较硅酸三钙类封闭剂(BioRoot RCS [BR]), MTA类封闭剂(Fillapex [MTA])和环氧树脂类封闭剂(AH Plus [AH])的溶解性和pH值变化。

溶解性的测试按照ISO6876:2012标准执行。将380个封闭样本(n = 10 per group)在双蒸水(AD)或PBS中放置6个月。溶解度结果依据质量百分比的差异进行检测。pH值的检测使用电子pH计按照溶解度测试的实验设置进行。所得结果使用analysis of variance, Student-Newman-Keuls和t检验进行统计学评估(P < .05)。

结果显示,溶解度最高的为AD中的MTA (4.65% ± 1.17%),随后为AD中的BR (3.88% ± 0.42%) (P < .05)。在PBS中,MTA (3.24% ± 0.7%)也表现出比BR (1.78% ± 0.5%)更高的溶解度(P < .05)。AH在整个过程中不溶解(0.5% ± 0.5%) (P < .05)。所有样本的pH值均随着时间的延长而逐渐降低。6个月后,BD在AD中表现出最高的pH值(pH 10.3),其次为AD中的MTA (pH 8.8)、PBS中的BR (pH 7.5)、PBS中的AH (pH 7.3)、PBS中的MTA (pH 7.2)和AD中的AH (pH 6.3)。

结论:与BR和AH相比,MTA的溶解度明显增加。存储在PBS中会显著减少MTA和BR的溶解度。BR在AD和PBS中比MTA在AD和PBS中表现出更高的pH值。AH并不会导致明显的pH变化。

原始出处:

Urban K, Neuhaus J, et al. Solubility and pH Value of 3 Different Root Canal Sealers: A Long-term Investigation. Solubility and pH Value of 3 Different Root Canal Sealers: A Long-term Investigation. J Endod. 2018 Sep 19. pii: S0099-2399(18)30540-5. doi: 10.1016/j.joen.2018.07.026.

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