J Endod:一种硅酸钙类封闭剂的牙本质小管渗透和再治疗研究

2019-07-04 lishiting MedSci原创

这篇研究有2个目的:评估一种硅酸三钙类牙髓封闭剂(EndoSequence BC Sealer; Brasseler USA, Savannah, GA)在没有核材料或辅以.02或.04锥度生物陶瓷牙胶尖时对牙本质小管的渗透性;评估取出根充材料所需时间。

这篇研究有2个目的:评估一种硅酸三钙类牙髓封闭剂(EndoSequence BC Sealer; Brasseler USA, Savannah, GA)在没有核材料或辅以.02或.04锥度生物陶瓷牙胶尖时对牙本质小管的渗透性;评估取出根充材料所需时间。

研究将拔除的人下颌切牙(N = 60)牙根通过镍钛旋转器械预备至0.04锥度#35 并按照封闭方法的不同随机分为3组(n = 10/group):1.只用封闭剂,2.封闭剂+.02牙胶尖, 3.封闭剂+.04牙胶尖。采用rhodamine B示踪封闭剂并通过激光共聚焦显微镜分析牙本质小管的渗透性。剩余样本(n = 30)通过再治疗锉检测取出根管内充填物所需时间。采用1-way analysis of variance和post hoc Games-Howell检验分析牙本质小管的渗透性,采用Kruskal-Wallis检验分析再治疗时间。

结果显示,当辅以0.4锥度牙胶尖时,封闭剂渗透以及封闭剂渗透区域显著(P < .05),而在封闭剂组和0.2锥度牙胶尖组之间未见明显差异(P > .05)。所有测试组封闭剂渗透深度相近(P > .05)。牙胶尖组移除根管内充填物所需的时间相似(P > .05),而在封闭剂组中无法达到工作长度。

结论:使用相匹配锥度的生物陶瓷牙胶尖能够增强测试硅酸三钙封闭剂的牙本质小管渗透性。使用核材料辅以封闭剂能够加速移除根管内充填物至工作长度。

原始出处:

Eymirli A, Sungur DD, et al. Dentinal Tubule Penetration and Retreatability of a Calcium Silicate-based Sealer Tested in Bulk or with Different Main Core Material. J Endod. 2019 Jun 20. pii: S0099-2399(19)30327-9. doi: 10.1016/j.joen.2019.04.010.

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    2019-09-24 szhvet
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    2019-07-06 whmdzju

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