Sialoliths may be the name mentioned to you. Have you been told that your salivary gland duct is blocked? Calcium deposits under the tongue are not uncommon. Your salivary flow is important to the health of your mouth. Salivary flow reduction can cause dry mouth, bad breath and even an infection in the duct. Wharton s Duct is located under the tongue. You can try to stimulate the flow of saliva by sucking on something sour such as a lemon. increased flow can push out calcium deposits and prevent the need for surgical removal. A Phlebolith, by definition, is a calcification in a vein or blood vessel. Vascular malformations may present with these. Sometimes, although present at birth, these may become prominent or increase later in life. Swelling may become evident. The phleboliths may be seen on an x-ray. Additional studies including ultra-sound and MRI may be required to determine vessel involvement. Hemangiomas are common with swelling, but less common with a phlebolith association in the mouth.