Overview
Dryness in the mouth also known as xerostomia is a common complication after undergoing radiotherapy of head and neck due to cancer. Dryness in the mouth occurs when there is not enough saliva in the mouth. Salivary glands are responsible for the production of saliva. Radiotherapy of the head and neck causes damages to the salivary glands and results dry mouth. Dryness in the mouth can cause an unpleasant taste in the mouth, thick and stringy saliva, bad breath, dry tongue, cracking of the lips and corners of the mouth. This can lead to difficulty eating, chewing, talking and sleeping as well. Other than that, it can lead to complications such as tooth decay, gum disease, mouth infections, and oral thrush. It is important to practice good oral hygiene after radiotherapy by drinking water oftenly, rinsing mouth after every meal with saltwater, brushing teeth after each meal and before bedtime, eating soft and moist food, avoiding sticky chewy food, avoiding acidic beverages and avoid smoking. Saliva substitutes and medications that stimulate salivary glands may also help.
