tell me about yourself
why this school
why dentistry
where do you see yourself in 5/10/15 years
what do you do that requires manual dexterity
convince me to accept you/ why are you better than other applicants
tell me something not in your file
what do you do for fun
what do you do to relieve stress
what experience with the dental profession have you had
what current dental issues are you aware of
do you plan to specialize
why not medicine
Those are what come to mind as of now.