The aim of this study was to evaluate the effectiveness of
pain modulation following
Laser or LED
phototherapies during the process of tooth separation. This was a longitudinal randomized controlled clinical trial in four observational times carried out in 60 patients (15 males, 45 females, average 24.1 years old) who were randomly divided into three groups: G1 (LED, AsGaAl, λ850 ± 10 nm, 150 mW, 17 J/cm2, 57 s per session), G2 (
Laser, AsGaAl, λ780 nm, 70 mW, 20.0 J/cm2, 240 s per session) and G3 (Non-irradiated Control). All patients were submitted to tooth separation using elastomeric separators. The
pain level was measured by using a visual analogue scale (VAS) immediately after insertion (T1) of the elastic, at 48 (T2), 96 (T3) hours and 6 days (T4). It was observed an increase of the
pain on the Control group from T1 to T2, with statistical significance.
Pain levels in the LED and
Laser groups were always significantly lower (<0.001), except for T1. According with the results of the present study it may be concluded that, either LED or
Laser phototherapies, were effective in reducing the
pain level after dental separation process when compared to the control group.