Smoking can alter the oral microbiota by increasing the acidity of saliva, depleting oxygen, influencing oral baterial adherence to mucosal surfaces, and impairing host immunity.

吸烟能通过增加唾液酸度、消耗氧气含量、影响口腔细菌对黏膜表面的附着、降低宿主免疫力等方式，改变口腔微生物群。