RESUMO
OBJECTIVE: This systematic review aimed to highlight the usefulness of the clinical examination of the oral cavity for the diagnostic suspicion of anorexia (AN) and bulimia nervosa (BN), being of main interest to the paediatric dentist and paediatrician due to the early onset of symptoms in Eating Disorders (EDs). METHOD: A systematic search, applying PICO question, was carried out in biomedical and other electronic databases from 2005 to 2020. Both case reports and case series of patients under 65 years of age with AN and BN were included. Data were extracted and statistically analysed. RESULTS: A sample of 111 studies was obtained (n = 192; 92.78% female). The most prevalent diagnosis was restrictive type AN (n = 110; 57.29%). Only 16 (8.33%) patients had been clinically examined at the oral cavity, indicating the presence or absence of oral manifestations (OM) and showing dental erosion (n = 10) as the most frequent. CONCLUSION: There is a lack of information about the oral examination of anorexic and bulimic patients. Dental erosion and other oral manifestations can help us to make an early ED diagnosis. Clinical observation and basic erosive wear examination (BEWE) Index are necessary steps to detect and record any anomaly in oral cavity during the evaluation of these patients.