A comparison of different irrigation/agitation methods for the removal of calcium hydroxide medicament from the root canal walls

Erhan Tahan, Buket Tug Kilkis, M. Tanrıver, M. Akdağ
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引用次数: 2

Abstract

Aim: To compare the removal efficiency of calcium hydroxide (CH) medicament from the root canal walls with different irrigation/agitation methods. Materials and Methods: Forty human mandibular premolars were selected. Root canals of these teeth were prepared up to F4 file using ProTaper rotary system and then filled with CH. All root specimens were stored at 37΀C and 100% relative humidity for 7 days. Teeth were randomly divided into four different groups (n = 10). For the removal of the medicaments from the canal walls, roots were subjected to the final irrigation/agitation methods used as follows: Conventional syringe irrigation with side-vented needle (Group 1), passive ultrasonic irrigation (PUI; Group 2), manual dynamic agitation (Group 3), and apical negative pressure irrigation (Group 4). The negative control did not receive CH placement. The positive control received the intracanal medication, but no subsequent removal. Roots were split longitudinally into two halves. Digital images of the root canal walls were acquired by a digital camera and assessed for residual amount of medicament. Cervical, middle, and apical third of each canal was assessed by using a scoring system. Data were analyzed using one-way analysis of variance (ANOVA) and Tukey′s multiple comparison tests, at 95% confidence interval (P < 0.05). Results: There were no statistically significant differences between all experimental groups and the negative group in each canal third (P > 0.05). However, there were statistically significant differences between the experimental groups and the positive control (P < 0.05). None of the experimental groups totally removed CH medicaments from root canal walls. Conclusions: In the limitations of this in vitro study, all experimental groups produced similar removal efficiency in terms of canal cleanliness.
不同冲洗/搅拌方法去除根管壁上氢氧化钙药物的比较
目的:比较不同冲洗/搅拌方法对根管壁上氢氧化钙(CH)药物的去除效果。材料与方法:选取40颗人下颌骨前磨牙。使用ProTaper旋转系统将牙根管预备至F4档,然后填充CH。所有根标本在37΀C和100%相对湿度下保存7天。牙齿随机分为4组(n = 10)。为了将药物从根管壁上清除,根管进行了最后的冲洗/搅拌方法,采用如下方法:常规侧通气针注射器冲洗(组1),被动超声冲洗(PUI;组2)、手动动态搅拌(组3)和根尖负压冲洗(组4)。阴性对照不接受CH放置。阳性对照接受管内药物治疗,但随后没有切除。根纵向分成两半。用数码相机获取根管壁的数字图像,并评估药物残留量。采用评分系统对每根椎管的颈、中、根尖三分之一进行评估。资料分析采用单因素方差分析(ANOVA)和Tukey多重比较检验,95%置信区间(P < 0.05)。结果:各试验组与阴性组在各管三处的差异均无统计学意义(P > 0.05)。但实验组与阳性对照组比较,差异有统计学意义(P < 0.05)。所有实验组均未完全清除根管壁上的CH药物。结论:在体外研究的局限性中,所有实验组在管道清洁度方面的清除效率相似。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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