“…We also found significant improvement in the study group functioning, emotional functioning, patient's satisfaction and adverse events must be measured in order to get high-quality studies (Farag et al, 2019). For this reason, we have followed the IMMPACT recommendations for chronic pain clinical trials exposed at the World Workshop on Oral Medicine VII (Farag et al, 2019 (Alonso, Prieto, & Antó, 1995), OHIP-14 for the patient's oral quality of life (Montero-Martin et al, 2009), Epworth sleepiness scale (Chiner, Arriero, Signes-Costa, Marco, & Fuentes, 1999), psychometric SCL-90-R (Derogatis 2001) and the McGill Pain Questionnaire (Lahuerta et al, 1982). A previous systematic review recommended parameters of wavelength (more than 815 nm), power (between 300 mW and 1 W), beam area (0.28 cm 2 ), frequency (continuous), time per point (10 s) and number of sessions (10) to achieve better results (de Pedro et al, 2020).…”