Efficacy of Different Irrigation and Activation Systems on the Penetration of Sodium Hypochlorite into Simulated Lateral Canals and up to Working Length: An In Vitro Study
Efficacy of Different Irrigation and Activation Systems on the Penetration of Sodium Hypochlorite into Simulated Lateral Canals and up to Working Length: An In Vitro Study
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DOI：
10.1016/j.joen.2010.02.019
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发表时间：
2010-07-01
影响因子：
4.2
通讯作者：
Cohenca, Nestor
中科院分区：
文献类型：
--
作者：
de Gregorio, Cesar;Estevez, Roberto;Cohenca, Nestor
引言：去除活髓和坏死的牙髓组织、微生物及其毒素是牙髓治疗成功的关键。然而，根管系统的复杂解剖结构限制了我们完全清创的能力。因此，本研究的目的是评估目前使用的冲洗和激活系统对次氯酸钠渗透到模拟侧管和封闭系统中的工作长度的影响。共创建600个模拟侧根管，每颗牙齿中6个，其中2个侧根管的工作长度为2、4、5和6 mm。为了模拟临床情况，通过用软模蜡涂覆每个根来创建封闭系统。然后将根随机分配到4个实验组，第1组（n = 20），Endoactivator超声激活组（n = 20）;被动超声激活组（n = 20）; F锉组（n = 20）;负压冲洗组（n = 20）;对照组（n = 20）。结果：结果表明，ANP冲洗组是上级的，在达到工作长度，和PUI是最有效的侧根管渗透结论：ANP冲洗系统表现出有限的激活冲洗剂进入侧根管，但达到工作长度显着超过其他组测试。相比之下，PUI组显示冲洗液明显更多地渗透到侧根管中，但未达到工作长度（J Endod 2010，36.1216 -1221）
Introduction: The removal of vital and necrotic pulp tissue, microorganisms, and their toxins is essential for endodontic success. However, the complex anatomy of the root canal system has limited our ability to debride it completely Hence the purpose of this study was to evaluate the effect of currently used irrigation and activation systems on the penetration of sodium hypochlorite into simulated lateral canals and to working length in a closed system Methods: One hundred single-rooted teeth were used in this study. A total of 600 simulated lateral canals were created, 6 in each tooth, with 2 lateral canals at 2, 4 5, and 6 mm of working length To resemble the clinical situation, a closed system was created by coating each root with soft modeling wax Roots were then randomly assigned to 4 experimental groups group 1 (n = 20), Endoactivator (sonic activation); group 2 (n = 20), passive ultrasonic (PUI) activation, group 3 (n = 20), F file, group 4 (n = 20), apical negative pressure (ANP) irrigation; and control group 5 (n = 20), positive pressure irrigation. The samples were evaluated by direct observation of the images recorded under the dental operating microscope Results: The results demonstrated that the ANP irrigation group was superior at reaching working length, and PUI was the most effective at lateral canal penetration Conclusions: The ANP irrigation system demonstrated limited activation of the irrigant into lateral canals but reached the working length significantly more than the other groups tested. In contrast, PUI group demonstrated significantly more penetration of irrigant into lateral canals but not up to the working length (J Endod 2010,36.1216-1221)