Abstract: Burning mouth syndrome is a chronic idiopathic pain disorder, the etiology and pathogenesis of which are still unclear, making clinical diagnosis and treatment difficult. At present, the clinical treatments mainly focus on removing possible local or systemic factors, explaining the condition, and psychological counseling, supplemented by medication to alleviate symptoms and improve the quality of life, such as oryzanol, mecobalamin, and psychotropic drugs, etc. However, there may be risks such as long-term administration of medication, uncertainty of efficacy, and side effects of medication. In recent years, photobiomodulation therapy has been gradually introduced into the treatment of burning mouth syndrome as a non-invasive therapy without obvious side effects, and has achieved certain efficacy, and the related studies have increased over the years. Therefore, this paper reviews the mechanism of action, therapeutic parameters, efficacy, and risk of photobiomodulation therapy in burning mouth syndrome.

Key words: burning mouth syndrome, photobiomodulation, low level laser therapy