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VOLUME 1 , ISSUE 1 ( 2011 ) > List of Articles


Temperature Rise on External Root Surface during Laser Endodontic Therapy using 940 nm Diode Laser: An in vitro Study

Suchetan Pradhan, Rohit Karnik

Citation Information : Pradhan S, Karnik R. Temperature Rise on External Root Surface during Laser Endodontic Therapy using 940 nm Diode Laser: An in vitro Study. Int J Laser Dent 2011; 1 (1):29-35.

DOI: 10.5005/jp-journals-10022-1004

License: CC BY-NC 4.0

Published Online: 01-12-2017

Copyright Statement:  Copyright © 2011; The Author(s).


Objective: The objective of this study was to investigate the rise in temperature on the external root surface during 940 nm diode laser assisted root canal therapy. Materials and methods: A total of 120 human single rooted extracted teeth were included in the study. The root canals were enlarged and laser irradiation was performed at four different settings (1 W continuous mode, 1 W gated mode 10/10, 2 W continuous mode and 2 W gated mode 10/10). The rise in temperature was measured at apical, middle and cervical thirds. The temperature changes were evaluated by a thermocouple. The threshold temperature rise of 7°C is commonly considered as the highest temperature limit biologically acceptable to avoid periodontal damage. Results: The mean temperature rise on external root surface in our study was below 7°C in all parameters and all portions of root surface. Conclusion: The 940 nm diode laser at 1 W CM, 1 W gated 10/10, 2 W CM and 2 W gated 10/10 can be considered safe for use for laser assisted root canal therapy.

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