Research Papers: General

Temperature changes on the root surfaces of mandibular incisors after an 810-nm high-intensity intracanal diode laser irradiation

[+] Author Affiliations
Andrea da Fonseca Alvarez, Harry Davidowicz

Universidade Paulista, Department of Endodontics, São Paulo, SP 04043-200, Brazil

Cacio Moura-Netto

University of São Paulo, Department of Restorative Dentistry, Endodontics Division, 2227 São Paulo, SP 05508-000, Brazil

Alexandre Daliberto Frugoli, Casemiro Fernando

Universidade Paulista, Department of Engineering, São Paulo, SP 04043-200, Brazil

Ana Cecilia Correa Aranha

Special Laboratory of Lasers in Dentistry (LELO-FOUSP), Department of Restorative Dentistry, São Paulo, SP 05508-000, Brazil

J. Biomed. Opt. 17(1), 015006 (Feb 07, 2012). doi:10.1117/1.JBO.17.1.015006
History: Received October 3, 2011; Revised December 2, 2011; Accepted December 2, 2011
Text Size: A A A

Abstract.  Temperature changes caused by laser irradiation can promote damage to the surrounding dental tissues. In this study, we evaluated the temperature changes of recently extracted human mandibular incisors during intracanal irradiation with an 810-nm diode laser at different settings. Fifty mandibular incisors were enlarged up to an apical size of ISO No. 40 file. After the final rinse with 17% ethylenediaminetetraacetic acid, 0.2% lauryl sodium sulfate biologic detergent, and sterile water, samples were irradiated with circular movements from apex to crown through five different settings of output power (1.5, 2.0, 2.5, 3.0, and 3.5 W) in continuous mode. The temperature changes were measured on both sides of the apical and middle root thirds using two thermopar devices. A temperature increase of 7 °C was considered acceptable as a safe threshold when applying the diode laser. Results: The results showed that only 3.5-W output power increased the outer surface temperature above the critical value. Conclusion: The recommended output power can be stipulated as equal to or less than 3 W to avoid overheating during diode laser irradiation on thin dentin walls.

Figures in this Article
© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Andrea da Fonseca Alvarez ; Cacio Moura-Netto ; Alexandre Daliberto Frugoli ; Casemiro Fernando ; Ana Cecilia Correa Aranha, et al.
"Temperature changes on the root surfaces of mandibular incisors after an 810-nm high-intensity intracanal diode laser irradiation", J. Biomed. Opt. 17(1), 015006 (Feb 07, 2012). ; http://dx.doi.org/10.1117/1.JBO.17.1.015006


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.