If you like war, traveling, the military mind set, owing 4 years of your life to Uncle Same plus four more as backup(reserve) and teeth....go for it....
I talked with my dentist who recently graduated from school and he told me, he had a couple of friends who went the Navy route and are now regretting it.
IMO, I would stay far away from it, but that's just me!!!
I would suggest talking with some dentists who have gone that route and get their opinions....:]>