For quite a while I have been sometimes biting my tongue and/or lip/cheek on the left side when I eat. Never on the right. I have 3 molar crowns on the left side & they appear to me to be shorter than what my original teeth were. Can upper molar caps that are changed in size of the original teeth be the cause of this? I didn't occur to me until I had one of the 3 molars pulled & a temporary crown put on. I then started biting my cheek so it made me wonder. Sorry no pics of old crowns