n di x 1 Database search strategy (January 12nd 2022). Burning mouth syndrome" OR "Burning mouth syndrome"[MeSH Terms] OR "Burning mouth syndromes" OR "Burning mouth syndrom" OR "glossalgia" OR glossalgias OR glossodynia OR glossodynias OR glossopyrosis OR glossopyroses OR stomatodynia) AND("Risk factor" OR "risk factors" OR "risk factors"[MeSH Terms] OR risk OR risks OR cohort OR "cohort studies"[MeSH Terms] OR cohorts OR "associat*" OR "risk relative" OR "odds ratio" OR ratio OR "longitudinal"[tiab] Burning mouth syndrome" OR "Burning mouth syndromes" OR "Burning mouth syndrom" OR "glossalgia" OR glossalgias OR glossodynia OR glossodynias OR glossopyrosis OR glossopyroses OR stomatodynia AND "Risk factor" OR "risk factors" OR risk OR risks OR cohort OR cohorts OR "associat*" OR "risk relative" OR "odds ratio" OR ratio OR longitudinal OR longitudinally OR prospective OR prospectively OR "retrospective studies" OR "retrospective" OR "follow up" OR Life Stress OR Psychological Stressor OR Psychological Stressors OR Emotional Stress OR stress OR stressful OR chronic stress OR opiorphin OR opiorfhin OR opiorphine OR opiorfhine OR sialorphin OR SMR pentapeptide OR oxytocin OR oxytocine OR BDNF OR brain-derived neurotrophic factor OR brain derived neurotrophic factor OR cortisol OR proinflammatory cytokines OR alfha-amylases OR α-amylase) OR Burning mouth syndromes OR Burning mouth syndrom OR glossalgia OR glossalgias OR glossodynia OR glossodynias OR glossopyrosis OR glossopyroses OR stomatodynia AND Risk factor OR risk factors OR risk OR risks OR cohort OR cohorts OR associat* OR risk relative OR odds ratio OR ratio OR longitudinal OR longitudinally OR prospective OR prospectively OR retrospective studies OR retrospective OR follow up OR Life Stress OR Psychological Stressor OR Psychological Stressors OR Emotional Stress OR stress OR stressful OR chronic stress OR opiorphin OR opiorfhin OR opiorphine OR opiorfhine OR sialorphin OR SMR pentapeptide OR oxytocin OR oxytocine OR BDNF OR brain-derived neurotrophic factor OR brain derived neurotrophic factor OR cortisol OR proinflammatory cytokines OR alfha-amylases OR Risk factor OR risk factors OR cohort OR cohorts OR association OR associated OR risk relative OR odds ratio OR longitudinal OR longitudinally OR prospective OR prospectively OR retrospective studies OR retrospective OR follow up OR Life Stress OR Psychological Stressor OR Psychological Stressors OR Emotional Stress OR stress OR stressful OR chronic stress OR opiorphin OR opiorfhin OR opiorphine OR opiorfhine OR sialorphin OR SMR pentapeptide OR oxytocin OR oxytocine OR BDNF OR brain-derived neurotrophic factor OR brain derived neurotrophic factor OR cortisol OR proinflammatory cytokines OR alfha-amylases OR α-amylase Database Search EMBASE Burning mouth syndrome α-amylase LIVIVO IN KEYWORDS: Burning mouth syndrome OR Burning mouth syndromes OR Burning mouth syndrom OR glossalgia OR glossalgias OR glossodynia OR glossodynias OR glossopyrosis OR glossopyroses OR stomatodynia AND 135,136 5 | CON CLUS IONS Based on the available evidence, this meta-analysis suggests a posi-How to cite this article: Porporatti AL, Schroder ÂGD, Lebel A, et al.