Figure 4: After tooth preparation, laser phototherapy with a low power laser (660 nm) was performed in all clinical sessions (total of four sessions), on the surrounding periodontal tissue (punctually with a semiconductor laser, wavelength of 650 nm, spot size of 0,028 cm2, energy density of 35.7 J/cm2, mean power of 100 mW, and energy per point as 1 J, contact mode, in a total of 2 points totalizing 2 J of energy).