Some medical treatments such as radiation therapy can actually permanently damage the salivary glands. And more than 400 kinds of medications list dry mouth as a side effect. The more common drugs include decongestants, diuretics, anti-hypertensives, anti-depressants, and antihistamines.
There are many methods for relieving oral pain. They include:
Ice packs on the affected area.
Avoiding hard candy or ice.
Avoiding sleeping on your stomach.
Dentists use a wide array of pain management tools, including:
Anesthetics such as Novocaine.
Analgesics such as aspirin or ibuprofen.
Sedatives, including a procedure known as "conscious sedation" or general sedation (also known as "deep sedation").