Answer:
The following is written by and according to the U.S. Department of Labor and particular to the education and training required for dentists.
All 50 States and the District of Columbia require dentists to be licensed. To qualify for a license in most States, candidates must graduate from an accredited dental school and pass written and practical examinations.
Education and training. In 2006, there were 56 dental schools accredited by the American Dental Association's (ADA's) Commission on Dental Accreditation. Dental schools require a minimum of 2 years of college-level predental education prior to admittance. Most dental students have at least a bachelor's degree before entering dental school, although a few applicants are accepted to dental school after 2 or 3 years of college and complete their bachelor's degree while attending dental school.
For the source and more detailed information concerning your request, click on the related links section (U.S. Department of Labor) indicated directly below this answer section.