You're learning to be a dentist, right? I believe in Pakistan, like in Britain, you learn dentistry at the undergraduate level. You can't be an American dentist this way. In the United States, you learn another subject at the undergraduate level - biology, chemistry, nursing, English, history, your choice - and complete the required courses required by the dental school. Then you apply for graduate school (graduate school/dental school) in the dentist.
In America, you can't be a dentist at the undergraduate level. If you come to America now, you need to go to a quality college and learn something else, not dentistry, and then apply for a dental school for your graduate work.
