09/05/2026
Saliva does a lot more than keep your mouth from feeling dry. It helps neutralize acids, supports enamel remineralization, clears food debris, and protects the tissues in your mouth.
When someone is consistently breathing through their mouth, that moisture can evaporate faster and the mouth may become drier. Over time, that can affect the mouth’s natural protective environment.
Persistent dry mouth or open-mouth breathing is something to look at more closely—especially nasal breathing, airway health, and oral rest posture.