Abstract | INTRODUCTION: The purpose of this study was to compare the efficacy of laser-driven irrigation in removing the smear layer and debriding the apical region of the root canal (the root tip) with that of ultrasonic irrigation. METHODS: Forty extracted human teeth with straight single roots were randomized into 4 groups (n = 10). The specimens were shaped by using hand instruments up to a size 30/.02 file (Control, Laser 1, and Laser 2 groups) or a size 20/.02 file ( Laser 3 group). During instrumentation, each canal was irrigated with 3% NaOCl and 17% ethylenediaminetetraacetic acid alternately between the use of successive files. The 4 groups of 10 teeth were processed as follows. In the Control group, teeth were irrigated with 17% ethylenediaminetetraacetic acid, and the irrigant was activated with an ultrasonic device for 60 seconds. In the Laser 1 and Laser 3 groups, the irrigant was activated with the laser for 60 seconds. In the Laser 2 group, the irrigant was activated with the laser for 30 seconds. RESULTS: There were significant differences between the smear layer and debris scores for the Laser 1 group and those for the Control (P < .001), Laser 2 (P = .002), and Laser 3 groups (P = .012 and P = .013, respectively). Completely clean root canals were found in the Laser 1 group. CONCLUSIONS: Use of a laser with a plain fiber tip, which produces cavitation in the irrigant, has potential as an improved alternative method for removing of the smear layer from the apical region of a straight root canal.
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Authors | Harry Huiz Peeters, Ketut Suardita |
Journal | Journal of endodontics
(J Endod)
Vol. 37
Issue 11
Pg. 1585-9
(Nov 2011)
ISSN: 1878-3554 [Electronic] United States |
PMID | 22000469
(Publication Type: Comparative Study, Evaluation Study, Journal Article)
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Copyright | Copyright © 2011 American Association of Endodontists. Published by Elsevier Inc. All rights reserved. |
Chemical References |
- Root Canal Irrigants
- Edetic Acid
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Topics |
- Bicuspid
- Dental Pulp Cavity
- Edetic Acid
(administration & dosage)
- Humans
- Lasers, Solid-State
(therapeutic use)
- Microscopy, Electron, Scanning
- Root Canal Irrigants
(administration & dosage)
- Root Canal Preparation
(instrumentation, methods)
- Smear Layer
- Therapeutic Irrigation
(instrumentation)
- Tooth Apex
- Ultrasonic Therapy
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