как не учатся-то, когда очень даже учатся. 4 года бакалавр, 3 года школа дантистов и 2-3 года школа ортодонтов.In the US, you must first get your 4-year university degree in a biological science. (Some may get through faster)Next, you must apply, get accepted, and attend dental school for 4 years. (Some may get through in 3 years)After graduating dental school, you need to apply, get accepted, and graduate from additional orthodontic residency/ training: This takes 2–3 years.https://www.americanboardortho.com/