If you are applying to an OOS state school, then yes because realistically they'd like you to practice in their state. Downright saying that you're going to go back home may not be ideal. However, if you are applying to a private schools, then I dont think it matters as much. What I would do if I were you is just say you are looking to practice in underserved areas because you grew up in one. You dont have to specify where and dental schools will still love that you're trying to give back to underserved people.