Usually you have a specific form from the school where you have been accepted, it comes with the acceptance package. This form will detail the kind of vaccinations you must have or must get before school starts, e.g., MMR, Hep A, Hep B, Tuberculosis, meningitis shots, etc. You take the form to your regular primary care physician office (where your vaccination documentation is kept) and have your doctor fill it out and sign. He/she will order the shots you haven't had. I had to get a TB chest x-ray too, because 2 of my schools (one where I got accepted, the other one where I was waitlisted) require it. Some schools require your checkup exam to be no more than 6 months before matriculation, so don't get your annual exam too early (March or later in the year that you start dental school to be safe).