In the early phases of orthodontic treatment, low-level laser therapy was found to be beneficial in lowering pain elicited by orthodontic movement.

This study intended to assess therapeutic efficacy of low-level laser therapy in decreasing pain induced by orthodontic movement during initial phases of therapy.

Overall, 54 individuals in need of orthodontic treatment were split into two groups. After the first alignment archwire was installed, subjects in experimental group (n = 28) underwent gallium-aluminum-arsenide infrared laser application on 12 points for each tooth, and subjects in control group (n = 26) underwent no pain management intervention at all.

Utilization of visual analogue scale (VAS) was done to quantify severity of pain at 6, 24, 48, and 72 h. By answering a questionnaire, perception of pain (initiation, peak, decrease, and absence) was assessed. A nonparametric Mann-Whitney analysis was carried out to assess pain perception and intensity between groups.

In comparison with the control group, the experimental group had considerably lower levels at 6, 24, and 48 h as well as reduced pain perception (h) in the peak, decline, and absence.

Low-level laser therapy is beneficial in lowering the intensity of pain triggered by the activation of orthodontic forces. Additionally, it enhances long-lasting analgesic action during the period of greatest pain sensitivity.