Clinical Research Directory

Inclusion Criteria: * Study Group (Eating Disorder Group): * Children and adolescents aged between 12 and 18 years. * A clinical diagnosis of an eating disorder (including anorexia nervosa and/or bulimia nervosa) established by a child and adolescent psychiatrist according to DSM-5 criteria. * Follow-up at the Child and Adolescent Psychiatry Clinic of Ondokuz Mayıs University Faculty of Medicine. Ability to cooperate with clinical oral examination procedures. Provision of written informed consent by parents or legal guardians and assent by the child/adolescent. Control Group: Children and adolescents aged between 12 and 18 years. Absence of any current or previous diagnosis of an eating disorder. Absence of diagnosed psychiatric disorders as determined by medical history. Physical and psychological health status deemed normal. Referral to the Faculty of Dentistry of Ondokuz Mayıs University for routine dental examination or treatment. Ability to cooperate with clinical oral examination procedures. Provision of written informed consent by parents or legal guardians and assent by the child/adolescent. Exclusion Criteria: * Presence of systemic diseases or medical conditions known to affect oral health (e.g., diabetes mellitus, congenital metabolic disorders, autoimmune diseases). * History of medications that may influence salivary flow, dental hard tissues, or gingival health (e.g., long-term corticosteroids, antiepileptic drugs, antidepressants causing xerostomia). * Presence of syndromic conditions or developmental disorders affecting craniofacial structures. * Ongoing orthodontic treatment or presence of fixed orthodontic appliances. * History of maxillofacial trauma or oral surgery within the last six months. Use of removable prosthetic appliances. * Inability or unwillingness of the child/adolescent or legal guardian to provide informed consent/assent. * Incomplete questionnaire data or inability to complete the OHIP-14 questionnaire.