Some people on here will tell you to go the post-bac route, while others will claim that a masters is the way. The best advice I can give you is to seek out the schools you would like to attend and ask them. Some of them care one over the other, some could care less. If it doesn't matter to the school you want to attend, then go with the cheaper, quicker, more convenient route. It partially depends on if you have already taken the pre-reqs, and how many sci. classes you have already taken. I've seen people gain entrance into dental school via both pathways.