Mailis,
Sorry about the postponement. I was waitlisted and rejected the first time I applied to ASDOH and I spent the next year working as a dental assistant. Please search my previous posts if you want to see how to do this without going to school for it. If you can swing an assistant gig at a community health center, that would be all the better. If ASDOH is your top choice, I would definitely focus on stuff like that (Community Health Centers, Indian Health Services) That kind of experience and a good LOR from them can go a long way to show your commitment to ideals espoused by ASDOH. If you happen to be in Utah, apply for a job at Clinical Research Associates in Provo. That would be very valuable experience at any dental school.
Good Luck!