Comparison of Er,Cr:YSGG and diode laser effects on dentin hypersensitivity: a split-mouth randomized clinical trial.

Abstract

The aim of the present study was to compare the clinical efficacy of diode laser and Er,Cr:YSGG lasers in the treatment of dentin hypersensitivity. Thirty-four teeth from 17 patients with dentin hypersensitivity were divided into two groups. In group D, the teeth were irradiated with diode laser beams with a wavelength of 940nm for 1min, and in group E, the teeth were irradiated with Er,Cr:YSGG laser beams with a wavelength of 2780nm and a pulse width of 140-200μs. Treatments with laser beams were carried out in 1 session. Sensitivity was assessed with air spray and a dental explorer. Pain severity was measured with the use of visual analog scale (VAS) before and after laser application. A decrease in dentin hypersensitivity was observed in both groups immediately, 1week, and 1month after laser irradiation. Statistically significant differences were found between the two groups in dentin hypersensitivity severity only 1month after laser application. The decrease in dentin hypersensitivity by Er,Cr:YSGG laser was significantly higher than that by diode laser at this time interval. The decrease in dentin hypersensitivity after application of Er,Cr:YSGG laser was significantly higher than that after the application of diode laser at 1-month postoperative interval. Er,Cr:YSGG laser is a better choice than diode laser for the treatment of dentin hypersensitivity in the short term.