DefinitionSalivary gland disorders are conditions that lead to swelling or pain in the saliva-producing tissues around the mouth.Causes, incidence, and risk factorsThe salivary glands produce saliva (spit), which moistens food to aid chewing and swallowing. Saliva contains enzymes that begin the digestion process. Saliva also cleans the mouth by washing away bacteria and food particles. Saliva keeps the mouth moist and helps to keep dentures or orthodontic appliances (such as retainers) in place.There are three pairs of salivary glands:The two largest are the parotid glands, one in each cheek in front of the earsTwo sublingual glands are under the floor of the mouthTwo submandibular glands are at the back of the mouth on both sides of the jawAll of the salivary glands empty saliva into the