Cavitational effects in aqueous endodontic irrigants generated by near-infrared lasers

Raghad Hmud, Bill Kahler, Roy George and Walsh, Laurence J. (2010) Cavitational effects in aqueous endodontic irrigants generated by near-infrared lasers. Journal of Endodontics, 36 2: 275-278. doi:10.1016/j.joen.2009.08.012


Author Raghad Hmud
Bill Kahler
Roy George
Walsh, Laurence J.
Title Cavitational effects in aqueous endodontic irrigants generated by near-infrared lasers
Journal name Journal of Endodontics   Check publisher's open access policy
ISSN 0099-2399; 878-3554
Publication date 2010-02
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.joen.2009.08.012
Volume 36
Issue 2
Start page 275
End page 278
Total pages 4
Editor Hargreaves, K.M.
Place of publication Philadelphia, PA, U.S.A.
Publisher Elsevier
Collection year 2011
Language eng
Subject C1
920113 Oro-Dental Disorders
110503 Endodontics
Formatted abstract
Introduction: Laser-generated pressure waves may have application for removing debris and smear layers from root canals. Past work has employed middle infrared erbium lasers. The present study examined whether near infrared 940 and 980 nm diode lasers (Biolase Ezlase and Sirona Sirolaser, respectively) could induce cavitations in aqueous media.
Methods: Laser energy was delivered into a capillary tube using a 200 µm fiber, and the formation of cavitations observed with a microscope. In the first part of the study, a range of laser parameters were trialled to establish conditions which form cavitations within 5 seconds of the commencement of laser irradiation. The second part of the study compared cavitation in distilled water, aerated tap water, degassed distilled water, ozonated water, 3 and 6% hydrogen peroxide using panel setting of 2.5 W/25 Hz for the Sirolaser, and 4 W/10 Hz for the Ezlase.
Results: Both diode laser systems could induce cavitation in water-base media by the formation and implosion of water vapour. Laser power played a more important role than pulse frequency or pulse interval. Optimal laser-initiated cavitation occurred when weak (3%) peroxide solutions were used as the target irrigant, rather than water.
Conclusion: This phenomenon has potential for enhancing debridement in endodontics.
Copyright © 2010 American Association of Endodontists.
Keyword Cavitation
Debridement
Endodontic treatment
Irrigants
Lasers
Peroxide
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 4 December 2009.

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
2010 Higher Education Research Data Collection
School of Dentistry Publications
 
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Created: Wed, 24 Mar 2010, 18:55:44 EST by Margot Dallinger on behalf of School of Dentistry