Best dental clinic in Adambakkam | The Role of Saliva in Your Oral Defense System Saliva does more than keep your mouth moist — it’s your first line of defense against oral health problems. It helps neutralize acids, wash away food particles, and contains enzymes that fight bacteria. At Dr. Akkshaya Dental & Aesthetics, we educate patients on how saliva plays a key role in preventing tooth decay, gum disease, and bad breath. If you experience dry mouth, it may be a sign of an underlying issue worth checking. Healthy saliva = a healthier smile. Let’s protect it together.