Thermal Effects of High-Intensity Laser Therapy on the Temporomandibular Joint Area in Clinically Healthy Racehorses—A Pilot Study

The aim of the present study was to assess the thermal effects of high-intensity laser therapy (HILT) on the temporomandibular joint (TMJ) area of clinically healthy Thoroughbred racehorses. The study was conducted on 21 clinically healthy Thoroughbreds in regular training. The horses were subjected to thermographic examinations before and immediately after a HILT session to measure changes in the body surface temperature in the TMJ area. The left TMJ was subjected to therapy, while the contralateral joint served as a control. Statistically significant differences in the body surface temperature in the TMJ area-before and after HILT-were found (<i>p</i> < 0.001). The body surface temperature of the area examined was higher by an average of 2.0 °C after HILT, compared to the temperature measured before HILT. The results prove the thermal effect of HILT in the TMJ area, which can be helpful in determining the appropriate and safe HILT parameters for the treatment of TMJ injuries and inflammation.