Dry Mouth (Xerostomia): Risks for Teeth and Gums—and Practical Relief

Dry mouth is more than annoyance—it changes the oral environment. Less saliva means less buffering of acid and less natural cleansing.

Common causes

Hundreds of medications list dry mouth as a side effect. Radiation near salivary glands, autoimmune conditions, dehydration, and mouth breathing also contribute.

What increases without saliva

Cavities at the gum line, fungal infections, and sore tissues are more common. Bad breath may worsen.

What helps

Sip water, use sugar-free gum or lozenges with xylitol if appropriate, and avoid tobacco and excess caffeine. Prescription saliva substitutes or stimulants exist for persistent cases. More frequent dental visits and fluoride tailored to your risk can protect teeth while the underlying cause is addressed with your medical team when possible.