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7 February 2012 Temperature changes on the root surfaces of mandibular incisors after an 810-nm high-intensity intracanal diode laser irradiation
Andrea da Fonseca Alvarez, Harry Davidowicz, Cacio Moura-Netto, Alexandre Daliberto Frugoli, Casemiro Fernando, Ana Cecilia C. Aranha
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Journal of Biomedical Optics, Vol. 17, Issue 1, 015006 (February 2012). https://doi.org/10.1117/1.JBO.17.1.015006
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.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2012/$25.00 © 2012 SPIE
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Andrea da Fonseca Alvarez, Harry Davidowicz, Cacio Moura-Netto, Alexandre Daliberto Frugoli, Casemiro Fernando, and Ana Cecilia C. Aranha "Temperature changes on the root surfaces of mandibular incisors after an 810-nm high-intensity intracanal diode laser irradiation," Journal of Biomedical Optics 17(1), 015006 (7 February 2012). https://doi.org/10.1117/1.JBO.17.1.015006
Published: 7 February 2012
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Cited by 8 scholarly publications.
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KEYWORDS
Semiconductor lasers
Temperature metrology
Laser irradiation
Teeth
Tissues
Dentistry
Surface plasmons
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