Salivary stones are crystalline saliva deposits that build up in the salivary glands and are the most prevalent cause of enlarged salivary glands. Salivary stones can occasionally obstruct the passage of saliva. When saliva is unable to flow through the ducts, it accumulates in the gland, producing discomfort and swelling. The three main types of salivary stones are: calcium phosphate, calcium carbonate, and magnesium ammonium phosphate (MgAP). Calcium phosphate stones are the most common type of stone found in the saliva and also the most easily treated with non-drug therapies. Drug treatments are used primarily for removal of calcium carbonate stones and MgAP stones. Surgery may be needed if other types of stones are present or if there is severe pain or difficulty swallowing due to an obstruction caused by a stone. Other factors such as infection, inflammation, or cancer may cause the glands to swell. If you notice any changes in the size or shape of your mouth or teeth, see your dentist right away. Your dentist will be able to diagnose problems with the muscles, nerves, or tissues surrounding the mouth and help you find solutions to relieve any pain or irritation you might be experiencing. Enlarged salivary glands can be a sign of disease, so talk to your doctor if you have trouble swallowing, feel pain when chewing or eating hard foods, have a family history of salivary gland problems, or experience any other symptoms related to your salivary glands.