[Relationship between oral microecological imbalance and general health]

Oral microecosystem comprises the different anatomic microniches of the oral cavity, oral microbiome living in them and the bathing fluid, saliva. Dynamic balance of the ecosystem plays an important role in keeping human health whereas disease conditions supervene when the microbial equilibrium is broken. Hence, the researchers have focused more attention on it recently. In this paper, the relationship between oral microecological homeostasis and general health was systematically reviewed from such aspects as the composition of oral microecosystem, the effects of its imbalance on oral and general health, and the methods currently used to modulate the oral microecology.