Effect of shortened irrigation times with 17% ethylene diamine tetra-acetic acid on smear layer removal after rotary canal instrumentation.
作者： Koichi Saito , Terry D. Webb , Glen M. Imamura , Gary G. Goodell
DOI: 10.1016/J.JOEN.2008.05.014
关键词:
摘要: The purpose of this study was to evaluate whether irrigation times 1 minute or less with mL 17% ethylene diamine tetra-acetic acid (EDTA) effectively removed the smear layer from root canals after rotary instrumentation. Forty single-canal teeth were decoronated, instrumented, and divided into 3 experimental groups (n = 10). Ten served as positive negative controls. received a final rinse EDTA for minute, 30 seconds, 15 seconds followed by 3-mL 6% NaOCl. Teeth split longitudinally prepared scanning electron microscopy imaging. Digital images (350x) approximate center coronal, middle, apical sections graded quality removal endodontists. Data analyzed nonparametric tests, significance level set at alpha .05. Significantly greater found in 1-minute group than 30-second 15-second groups.
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