) of calcareous matter which forms in the rear of the mouth, in the crevasses (called tonsillar crypts) of the palatine tonsils (which are what most people commonly refer to as simply tonsils).
Tonsil stones, it is theorized, are the result of a combination of any of the following:[1]
food particles
dead white blood cells (a.k.a. leukocytes
and the temporomandibular joint region of the fleshed jaw. They may be an especially uncomfortable nuisance, but are not often harmful. They are one possible cause of halitosis.[2]