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- The impact of eating disorders on the oral microbiota: integrative reviewPublication . Grandjanin, Clémentine; Simões, Catarina; Pina, CristinaEating disorders, recognized as a significant public health concern, are primarily categorized into bulimic disorders, which involve episodes of binge eating followed by compensatory behaviors, and anorexic disorders, which are marked by extreme dietary restrictions and a drive for thinness. Both types of eating disorders have serious repercussions for oral health, presenting a range of oral manifestations that include various signs and symptoms affecting the oral mucosa, perioral tissues, teeth, periodontal health, and salivary glands. These complications arise from factors such as nutritional deficiencies, poor oral hygiene, altered eating behaviors, pharmacological treatments, and self-induced vomiting. Individuals with eating disorders are at an elevated risk of dental complications due to frequent purging behaviors, which repeatedly expose teeth to stomach acids. This exposure leads to enamel erosion, heightening the susceptibility to dental caries and other oral health issues. Furthermore, a review of studies included in this thesis indicates an increased colonization by fungal species, particularly Candida albicans and Candida parapsilosis, in patients with eating disorders. The repetitive cycle of vomiting and associated nutritional imbalances creates an environment that disrupts the natural homeostasis of the oral microbiota, facilitating the overgrowth of these opportunistic fungi and increasing the risk of fungal infections. The primary objective of this thesis is to explore and analyze the impact of eating disorders on the oral microbiota. To achieve this, a comprehensive bibliographic search was conducted using the PubMed database. Specific keywords and inclusion/exclusion criteria were applied, with the search limited to publications from 2000 to 2022. Initially, 20 articles were identified; following a thorough review of abstracts and full-text readings, 14 articles were excluded based on relevance and alignment with the study’s objectives. Ultimately, 4 articles were deemed essential for the foundation and writing of this thesis. In conclusion, eating disorders significantly disrupt the oral microbiota, leading to severe oral health complications. These disruptions, often described as dysbiosis, create an imbalance within the oral microbiome, fostering the growth of pathogenic organisms, increasing infection risk, and contributing to the degradation of oral tissues. This study highlights the critical importance of a multidisciplinary approach that incorporates dental, medical, and psychological care to address the complex health needs of patients with eating disorders. Further research is essential to deepen our understanding of these interactions and to develop effective, targeted treatment strategies that can improve both oral and overall health outcomes for individuals affected by these disorders.