<p>I am an MD so I do not really know anything about dental dchool but as far as medical school is concerned you can major in anything you want (I majored in Astronomy) as long as you take the undergraduate prerequisite courses in Biology, General Chemistry, Organic Chemistry, Physics (generally does not need to be Calculus based) and English. Some medical schools require that you take a college level math course and a few require a semester of calculus which is very unlikely to have anything to do with what you study in medical school. As an Astronomy major I took many courses in Calculus and Calculus based Physics as an undergraduate so some medical schools requiring that you take a math course as an undergraduate was not an issue for me. Personally, the hardest prerequisite by far was Organic Chemistry which I barely got a C in. In my case I had already been accepted by Drexel University School of Medicine when I was taking Organic Chemistry and they said they would not rescind my acceptance as long as I finished the course with a C or better. Normally, a C in Organic Chemistry would be a fatal blow for your chances of acceptance at a medical school.</p>