Oral microbiota composition (null)

Oral microbiota composition refers to the specific communities of microorganisms—predominantly bacteria, but also fungi, viruses, archaea, and protozoa—that colonize various surfaces in the human oral cavity (teeth, gums, cheeks, tongue, palate, etc.)[1][3][7]. This composition is dynamic and influenced by numerous endogenous and exogenous factors including host genetics, immune state, age, diet, oral hygiene, and use of medications or dental devices[1][5][8]. Around 1,000 bacterial species have been identified, with key phyla including Firmicutes, Actinobacteria, Bacteroidetes, Proteobacteria, Fusobacteria, and Spirochaetes[1][8]. The balance of this microbiota plays a critical role in oral health—shifts in its composition (dysbiosis) are linked to oral diseases (caries, periodontitis) and have strong associations with systemic diseases[1][9]. While not a single drug target, interventions such as probiotics and modulation of oral hygiene are strategies to influence oral microbiota composition for health benefits[2][4].

Other names

Oral microbiome compositionOral bacterial community structureOral microbial ecology

Probiotics: outcompete pathogenic bacteria, modulate local immunity, produce antimicrobial peptides (e.g., bacteriocins, lantibiotics) Antibiotics/antiseptics: broadly reduce or alter resident microbial populations