Evaluation of the Effect of Fluoride and Laser Application on the Prevention of Sensitivity in Bleached Teeth

Laser therapy: it was used the infrared spectrum with wavelength of 808 nm in its active environment AsGaAl, in two points: cervical and central-medial region of the incisors, canines and premolars.

Fluoride therapy: 1.1% sodium fluoride 5000 ppm was applied for 5 minutes on the vestibular surface of all pre-bleached dental elements.

Both groups received the in-office bleaching treatment. Three 15-minute applications of the 35% hydrogen peroxide gel were performed, totaling 45 minutes in each of the 4 sessions, with a 7-day interval.