To apply to a dental school, you will need an undergraduate degree. To be accepted, you will need letters of recommendation, have completed specific courses throughout your undergraduate program, and pass the Dental Admissions Test (DAT). Dental school programs take another four years to complete, and then you’ll need to finish a residency. The residency you select will help you break into a more specialized profession within dentistry. Most dental residencies last two to three years, but more specialized and complex programs can last five to six years. Since dental school is extensive, it’s a great idea to shadow dentists, or become a dental assistant to help you make the decision to pursue the field. Dentists on average make $199,000 a year.