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http://dx.doi.org/10.5395/JKACD.2003.28.1.050

THE EFFECTS OF EDTA AND PULSED ND:YAG LASER ON APICAL LEAKAGE OF CANAL OBTURATION  

Kwon, Jin-Soo (Department of Conservative dentistry, College of Dentistry, Pusan National University)
Lee, Hee-Joo (Department of Conservative dentistry, College of Dentistry, Pusan National University)
Hur, Bock (Department of Conservative dentistry, College of Dentistry, Pusan National University)
Publication Information
Restorative Dentistry and Endodontics / v.28, no.1, 2003 , pp. 50-56 More about this Journal
Abstract
The purpose of this study was to evaluate the effects of EDTA and pulsed Nd :YAG laser on apical leak-age of canal obturation. Forty-eight single-rooted teeth were used in this study. The teeth were instrumented up to a size 40 K-file and irrigated with 2.5% NaOCl between each fie size. And the teeth were divided into 4 groups. In group A, the root canals were irrigated with a final flush of 5ml 2.5% NaOCl as a control group. The teeth in group B were irrigated with a final flush of 5ml 17% EDTA. The teeth in group C and D were irradiated by pulsed Nd：YAG laser(laser parameters were set at 1W, 100mJ, 10Hz, and 2W, 100mJ, 20Hz respectively). The results were as follows : 1. Apical leakage was observed in 50% of samples in group A, 30% of samples in group B, 20% of samples in group C, and 10% of samples in group D. 2. The teeth in group B had less leakage than group A, but there was no statistically significant differences(p＞0.05). 3. The teeth in group C, D had less leakage than group A, and there was statistically significant differences(p＜0.05). 4. The teeth in group C, D had less leakage than group B, but there was no statistically significant differences(p＞0.05). 5. There was no significant differences in apical leakage between group C and group D(p＞0.05).
Keywords
EDTA; ND:YAG laser; Smear layer; Microleakage;
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