Effect of irrigants and cementum injury on diffusion of hydroxyl ions through the dentinal tubules.
Effect of irrigants and cementum injury on diffusion of hydroxyl ions through the dentinal tubules.
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冲洗剂和牙骨质损伤对羟基离子通过牙本质小管扩散的影响。
DOI：
10.1016/j.joen.2007.09.010
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发表时间：
2008
影响因子：
4.2
通讯作者：
McClanahan,ScottB
中科院分区：
文献类型：
--
作者：
Saif,Sherma;Carey,CliftonM;Tordik,PatriciaA;McClanahan,ScottB
这项研究测量了羟基离子通过牙本质小管扩散到浴液中。将80颗单根管器械固定牙分为8组。对照组1和3分别用10 mL 0.9%生理盐水和10 mL 6%次氯酸钠（NaOCl）冲洗。对照组5和7分别用3 mL和1 mL 17%乙二胺四乙酸（EDTA）冲洗，然后用10 mL 6% NaOCl冲洗。实验组2、4、6、8与实验组1、3、5、7相同，根管内注入氢氧化钙（Ca（OH）2）。记录沐浴液pH值30天，造成牙骨质缺损，然后再记录pH值30天。通过配对差异检验，稳态期间的平均pH值具有统计学差异，缺损后更高（P < .001）。通过Tukey多重比较，发现第6组的缺损后pH值显著高于其他组（P <0.01）。本研究表明，在Ca（OH）2放置之前，用3 mL 17%EDTA和10 mL 6%NaOCl进行最终根管冲洗，可以使最大的羟基离子扩散到根面。
This study measured hydroxyl ion diffusion through dentinal tubules into a bathing solution. Eighty single-canal, instrumented teeth were divided into 8 groups. Control groups 1 and 3 were irrigated with 10 mL 0.9% saline and 10 mL 6% sodium hypochlorite (NaOCl), respectively. Control groups 5 and 7 were irrigated with 3 mL and 1 mL 17% ethylenediaminetetraacetic acid (EDTA) and then 10 mL 6% NaOCl, respectively. Experimental groups 2, 4, 6, and 8 were irrigated as groups 1, 3, 5, and 7, followed by placement of calcium hydroxide (Ca(OH)2) into canals. Bathing solution pH was recorded for 30 days, a cementum defect was made, and then pH was recorded for another 30 days. With a paired difference test, average pH during steady state was statistically different and higher after the defect (P < .001). With Tukey multiple comparisons, post-defect pH for group 6 was found to be significantly greater (P < .01) than in other groups. This study indicated final canal irrigation with 3 mL 17% EDTA and 10 mL 6% NaOCl before Ca(OH)2placement allowed the greatest hydroxyl ion diffusion to the root surface.
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作者：
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DOI：
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发表时间：
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期刊：
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