It was a little different for me, I had a year off between finishing post-bac and starting NYU (this fall). I work as a dental asst. I just contacted a bunch of offices and told them my story...i have a year, applying to dental school, want to learn and work. I got lucky by getting hired by a dentist that opened her practice 1.5 yrs ago, and needed help. Initially i started cleaning rooms and instruments so the other asst could help her, but then she let me assist and now im doing most of it. A lot of places are so worried about production that they could really use an extra room-cleaner or instrument sterilizer, something that doesnt require any certification. Even now, after working for ~8 months I am not x-ray certified, I just let the other asst or the Dr take xrays.
I am definitely glad i am assisting mostly because after learning, second-hand of course, how to do the procedures im confident about entering school and doing well, im not walking in blind. And it is for that reason it is not enough to shadow...you cant see anything and are not involved. Assisting is like youre right there with them doing the procedure, you know the next step, and you learn how to think about cases and procedures the way the dentist does. With a little handiwork getting-used-to I know i can do any class fillings, definitely extractions, and some single-canal RCT. For me assisting is huge.
Plus it looks great at the interview, and gives you something to talk about. I mentioned that I thought every applicant should assist for a little bit...the interviewer agreed.