Photobiomodulation therapy reduces postoperative pain after third molar extractions: a randomized clinical trial

• Cristina Pereira Isolan ^[1] ; Mateus de Azevedo Kinalski ^[1] ; Otávio Amaral de Andrade Leão ^[1] ; Letícia Kirst Post ^[1] ; Tania Maria Pereira Isolan ^[2] ; Mateus Bertolini Fernandes dos Santos ^[1]
  1. [1] Universidade Federal de Pelotas

     Universidade Federal de Pelotas

     Brasil

     
  2. [2] Private Practice, Pelotas, RS, Brazil
• Localización: Medicina oral, patología oral y cirugía bucal. Ed. inglesa, ISSN-e 1698-6946, Vol. 26, Nº. 3, 2021
• Idioma: inglés
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• Resumen

  • To assess the efficacy of PBMT on reducing postoperative pain scores in patients submitted to third molar extractions.

    A randomized controlled trial (ReBEC:RBR-94BCKZ) was designed according to the SPIRIT and followed the CONSORT. Patients were randomly allocated according to control or PBMT groups. PBMT consisted of the application of GaAlAs laser (808nm;50mW) applied in six points (1.23 min;11 J/cm2) after extraction. Pain scores were assessed using the Visual Analogue Scale (VAS) in millimeters evaluated after 6 (T6), 24 (T24), and 48 (T48) hours. The Wilcoxon Mann–Whitney test was used to check for possible associations between VAS scores and treatment groups.

    A total of 101 third molar extractions were performed in 44 patients. The mean age was 28 years old(SD±11.54). Comparing control and intervention, PBMT group showed a significant effect on the reduction of postoperative pain at T6(mean VAS=0.9; C.I:0.63–1.16) compared to control (mean VAS=2.5;C.I:2.1–2.88)(p<0.001). The same statistically significant effect on the reduction of postoperative pain was observed at T24 (PBMT mean VAS=0.72;C.I:0.51–0.93; control mean VAS=2.86;C.I:2.40–3.31;p<0.001) and T48 (PBMT mean VAS=0.64;C.I:0.36–0.92; control mean VAS=2.86;C.I:2.37–3.34;p<0.001).

    PBMT significantly reduce the postoperative pain scores when assessed 6, 24, and 48 hours after third molar extractions.