Honestly, I would say that if you are driven to become an orthodontist, you are going to have to put in a lot of extra time in your lab work and school work as well. Most people who go into ortho are very good scholars as well, so by doing well in all your studies is essential. I would say that UCLA has a lot of people wanting to go to Ortho because they are extremely competitive as students. Here at UCSF, its great to be a hard worker, but you might get looked down upon if you are selfish. All of my classmates are hard workers and we all want to help each other achieve our goals. I think last year there were a few going into Ortho from our school, but I would honestly say, don't think about specializing until you have gone through and researched all the specialties before making your decision. One of my friends wants to do OMFS, but his lab work is so great that the profs say he should be prosth, so he's now exploring a second option. Hope that helps.
