Temperature changes accompanying near infrared diode laser endodontic treatment of wet canals

Hmud, Raghad, Kahler, William A. and Walsh, Laurence J. (2010) Temperature changes accompanying near infrared diode laser endodontic treatment of wet canals. Journal of Endodontics, 36 5: 908-911. doi:10.1016/j.joen.2010.01.007


Author Hmud, Raghad
Kahler, William A.
Walsh, Laurence J.
Title Temperature changes accompanying near infrared diode laser endodontic treatment of wet canals
Journal name Journal of Endodontics   Check publisher's open access policy
ISSN 0099-2399
1878-3554
Publication date 2010-05
Sub-type Article (original research)
DOI 10.1016/j.joen.2010.01.007
Volume 36
Issue 5
Start page 908
End page 911
Total pages 4
Place of publication Philadelphia, PA, United States
Publisher Elsevier
Collection year 2011
Language eng
Formatted abstract
Introduction: Diode laser endodontic treatments such as disinfection or the generation of cavitations should not cause deleterious thermal changes in radicular dentin.

Methods: This study assessed thermal changes in the root canal and on the root surface when using 940 and 980 nm lasers at settings of 4 W/10 Hz and 2.5 W/25 Hz, respectively, delivered into 2000-μm fibers to generate cavitations in water. The root surface temperature in the apical third was recorded, as was the water temperature in coronal, middle, and apical third regions, by using thermocouples placed inside the canal. Lasing was undertaken with either rest periods or rinsing between 5-second laser exposures.

Results: Both diode lasers induced only modest temperature changes on the external root surface at the settings used. Even though the temperature of the water within the canal increased during lasing by as much as 30°C, the external root surface temperature increased by only a maximum of 4°C. Irrigation between laser exposures was highly effective in minimizing thermal changes within the root canal and on the root surface.

Conclusions:
Diode laser parameters that induce cavitation do not result in adverse thermal changes in radicular dentin. © 2010 American Association of Endodontists.
Keyword Diode
Endodontic treatment lasers
Temperature
Thermocouples
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published under Basic Research—Technology

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Dentistry Publications
 
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Created: Sun, 06 Jun 2010, 00:04:41 EST