Originally Posted by maimezvous
When you say "put off declaring" does that mean that I should not let them know that I am interested in dentistry?
Put off declaring a major, which, in this case, would be some kind of sciency thing. Shawn is correct that the sciences often have requirements that need to get taken care of, but unless you are really just farting around and enrolling in courses with the toss of a dart, you'll have a sense of what you're supposed to take.
I despise the major system, and you need to understand that each department (Biology, Chemistry, English, etc) wants you to declare a major with them because that means $$$. But the major locks you into a specific track and fills up your schedule pretty quickly. It's essentially a kind of job training: here's what you need to do if you want to be a ________ist. If you have any doubts about what you want to do with your life (and you're 17 or 18. Surely you know what it is you want to spend the rest of your life doing!
), the major will lock you in. I encourage students to explore. Take a bunch of classes. Take a modern dance class. Take a fencing class. Take whatever interests you. Look through the university catalog, which will be your bible for 4 years. Look at the requirements for the various majors and schedule your classes with an eye toward whatever you think you might go into.
And pardon me for saying this, but your posts suggest that you are under the impression that you can go to college and learn how to be a dentist. While this is true for dental hygiene, to become a dentist you'll need to go to dental school, which is med school.
If it's dental hygiene you want, you may not even need a 4-year school.