Oral and fecal microbiota in oral lichen planus and xerostomia patients: A preliminary study

OLP and xerostomia are associated with distinct oral microbiota patterns, which may aid in early and non-invasive diagnosis. Fecal samples of both patient groups differed significantly from controls in Bacteroidetes, supporting the oral-gut microbiome axis and providing further evidence that oral conditions can influence systemic microbial communities. A major limitation of this study is the relatively small sample size.