810nm, 980nm, 1470nm and 1950nm diode laser comparison: a preliminary “ex vivo” study on oral soft tissues

Carlo Fornaini M.D.; Elisabetta Merigo; Michele Sozzi; Stefano Selleri; Paolo Vescovi; Annamaria Cucinotta

doi:10.1117/12.2079048

24 February 2015 810nm, 980nm, 1470nm and 1950nm diode laser comparison: a preliminary “ex vivo” study on oral soft tissues

Carlo Fornaini M.D., Elisabetta Merigo, Michele Sozzi, Stefano Selleri, Paolo Vescovi, Annamaria Cucinotta

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Proceedings Volume 9306, Lasers in Dentistry XXI; 930606 (2015) https://doi.org/10.1117/12.2079048
Event: SPIE BiOS, 2015, San Francisco, California, United States

Abstract

The introduction of diode lasers in dentistry has several advantages, mainly consisting on the reduced size, reduced cost and possibility to beam delivering by optical fibers. At the moment the two diode wavelengths normally utilized in the dental field are 810 and 980 nm for soft tissues treatments. The aim of this study was to compare the efficacy of four different diode wavelengths: 810, 980, 1470 and 1950 nm diode laser for the ablation of soft tissues. Several samples of veal tongue were exposed to the four different wavelengths, at different fluences. The internal temperature of the soft tissues, in the area close to the beam, was monitored with thermocouple during the experiment. The excision quality of the exposed samples have been characterized by means of an optical microscope. Tissue damages and the cut regularity have been evaluated on the base of established criteria. The lowest thermal increase was recorded for 1950 nm laser. Best quality and speed of incision were obtained by the same wavelength. By evaluating epithelial, stromal and vascular damages for all the used wavelengths, the best result, in terms of “tissue respect”, have been obtained for 1470 and 1950 nm exposures. From the obtained results 1470 and 1950 nm diode laser showed to be the best performer wavelengths among these used in this “ex vivo” study, probably due to their greatest affinity to water.

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Carlo Fornaini M.D., Elisabetta Merigo, Michele Sozzi, Stefano Selleri, Paolo Vescovi, and Annamaria Cucinotta "810nm, 980nm, 1470nm and 1950nm diode laser comparison: a preliminary “ex vivo” study on oral soft tissues", Proc. SPIE 9306, Lasers in Dentistry XXI, 930606 (24 February 2015); https://doi.org/10.1117/12.2079048

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KEYWORDS

Tissues

Semiconductor lasers

Laser dentistry

Diodes

Laser therapeutics

Injuries

Surgery

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