hey I am a dental assistant.
Some offices require experience, others don't care. If you go to a few offices around your area, ask them if they would hire you as an OJT assistant or On Job Training assistant. You can get paid while being in your dental environment. If that doesn't work out, which didn't work out for me, I would say go to a dental assisting program for about 9 months, and get the training you want and then start working and take your pre-reqs. The only downside of that is that most training schools are around 12000. If you have the money for that do it, if you don't make sure you'll be able to take out a loan and pay it off, that's what I have to do. Don't stop trying though, I am sure you will find a good dentist that would let you do the OJT route. Good luck, if you need any more help PM me. Take care.