I agree with SuperDude All the people that i know here at my school that got in did all theirs before applying. This way, schools know that you handled your core prereqs well and you are a more solid applicant. Some people accepted have left physics to their senior year because here at my school physics is one of the few GPA killers. Me? i took physics my sophomore year just to get it out of the way because now that i'm a senior, i just dont wanna study anymore. Major senioritis. 🙁
Anywho, if you keep up your above schedule and make good grades, you're good. If you can, squeeze in classes that some dental schools also require: microbiology, biochem, psychology, sociology, calculus.. or whatever else your schools of your choice want. I"m not sure what your major is, but hopefully you have a major that has the latter classes built into the curriculum. Thank god for convenient majors. 🙂