For being a professor in dental college you must have to specification in  the desired subjects.... You must have to be post graduate on the relevant subject..

A professor in a private Dental college in any speciality is a time bound promotion. You have to work as Sr. Lecturer for four years, then five years as Reader. It cam take atleast 8 years of college education  to become a professor . Completing postdoctoral education or gaining working experience in one's field can add to the time it takes to earn a faculty position.