Yeah, mom really should’ve had that discussion with you before you started applying to places you can’t afford. Nonetheless, I speak from first-hand experience when I say that parents are far from perfect. You’ll be a flawed parent too one day 
That being the case…you can’t afford to go there. There’s no money to pay for it, and there’s no way to get student financing without a co-signer. I wouldn’t co-sign that kind of student debt either. It’s a setup for failure.
Being a dentist is a GREAT dream and you seriously don’t need an exotic school to get there. I have two cousins that went to UTSA, which is the local university over here. One is a doctor and the other one is a lawyer. Both have very successful careers. Plus, dental school is VERY expensive and you really need to keep the undergraduate loans to a minimum.