Just a few years ago I began making very loud clicking noises in my sleep with my mouth. If I m awaken while going it it seems as though I was rapidly swishing my tongue and saliva around. My husband thinks I m grinding my teeth but it doesn t seem that way to me ...though per my dentist, I do have a history of such and its now effected my ability to bite down. However, what I m doing with my mouth seems to be something that started happening after a surgery I had where I was taking morphine in hospital. At that time I was doing this same clicking with my mouth that my husband noticed then. Maybe there s a correlation?