The evaluation of removal of calcium hydroxide paste from an artificial standardized groove in the apical root canal using different irrigation methodologies.
The evaluation of removal of calcium hydroxide paste from an artificial standardized groove in the apical root canal using different irrigation methodologies.
复制标题
DOI：
10.1111/j.1365-2591.2006.01182.x
复制
发表时间：
2007
影响因子：
5
通讯作者：
L. V. D. Sluis;Min-Kai Wu;P. Wesselink
中科院分区：
文献类型：
--
作者：
L. V. D. Sluis;Min-Kai Wu;P. Wesselink
目的评价次氯酸钠（NaOCl）和水作为根管冲洗剂时，氢氧化钙（Ca（OH）2）糊剂从根管中清除的能力，以及对Ca（OH）2清除效果的影响。方法：16个下颌前磨牙。使用尺寸为30，锥度为0.06的GT器械准备每个牙根至根尖孔。每个根都纵向分裂。在牙根的一半，在离根尖2-6 mm处的根管壁中切割凹槽，然后用Ca（OH）2糊剂填充。随后，根被重新组装。第1组（n = 16）用2.0%NaOCl 50 mL作为冲洗液进行超声冲洗。第2组（n = 16）以与第1组相同的方式处理，但使用50 mL水代替NaOCl。第3组（n = 16）用2.0%NaOCl 50 mL注射器冲洗。对沟槽中剩余Ca（OH）2的量进行评分，并使用Kruskal-Wallis和Mann-Whitney检验分析数据。结果各组间Ca（OH）2残留量差异有统计学意义（P < 0.001）。第1组的评分显著低于第2组（P < 0.001）和第3组（P = 0.002），但第2组和第3组之间无显著差异（P = 0.765）。结论2%NaOCl被动超声冲洗法清除人工根管槽内Ca（OH）2糊剂的效果优于2%NaOCl或水冲洗法。
AIM To evaluate the capacity to remove a calcium hydroxide (Ca(OH)2) paste from the root canal and to evaluate the efficacy of Ca(OH)2 removal during passive ultrasonic irrigation using either sodium hypochlorite (NaOCl) or water as an irrigant. METHODOLOGY Sixteen mandibular premolars were used. Each root was prepared to the apical foramen using GT instruments of size 30, 0.06 taper. Each root was split longitudinally. In one half of the root, a groove was cut in the canal wall 2-6 mm from the apex which was then filled with a Ca(OH)2 paste. Subsequently the roots were reassembled. In group 1 (n = 16), the teeth were ultrasonically irrigated using 50 mL 2.0% NaOCl as the irrigant. Group 2 (n = 16) was treated in the same manner as group 1, but using 50 mL water in place of the NaOCl. In group 3 (n = 16), the teeth were irrigated by syringe injection of 50 mL 2.0% NaOCl. The quantity of remaining Ca(OH)2 in the groove was scored and the data analysed with Kruskal-Wallis and Mann-Whitney tests. RESULTS The difference in remaining Ca(OH)2 between all groups was statistically significant (P < 0.001). Group 1 had significantly lower scores than group 2 (P < 0.001) and group 3 (P = 0.002), but there was no significant difference between groups 2 and 3 (P = 0.765). CONCLUSIONS Passive ultrasonic irrigation with 2% NaOCl was more effective in removing Ca(OH)2 paste from artificial root canal grooves than syringe delivery of 2% NaOCl or water as irrigant.