Dry mouth (xerostomia) occurs when the salivary glands produce too little saliva.

Saliva is necessary for the taste, swallowing and speech. Helps prevent infection and tooth decay by neutralizing acid and cleaning your teeth and gums. Radiation can damage the salivary glands that develop and make very little saliva. When introducing dry mouth (xerostomia), the patient's quality of life suffers. The cleaning capacity of the mouth is less. The acid in the mouth are not lost and is neutralizes minerals from the teeth. Tooth decay and gum disease are more likely to arise. In addition, there is some evidence that certain types of chemotherapy drugs administered alone or in combination, can damage the salivary glands. The symptoms of dry mouth include the following problems:
     * Saliva thick, fibrous.
     * Increased thirst.
     * Change in the sense of taste, changes in swallowing and speaking.
     * Feeling pain or burning (especially in the language).
     * Cuts or cracks on the lips or in the corners of his mouth.
     *Changes in the surface of the tongue.
     * Difficulty in using dentures.