I have medicaid n live in nyack ny need a dentist who will help?

my tooth broke that had a root canal mos ago. its two teeth away from my ledt canine. im a woman,29 n not ugly. i have tons of dental issues 3 crowns on my front top teeth.. 4 root canals. tons of fillins. i have no top back teeth and no back teeth on my left side. i cry every day. the tooth is broke but hasnt fell out yet. i was seein my same dentist for 6 yrs. and she dont wanna help me now for some reasin. is it true that if i go to a hospital that has dental in it they will help me. i heard that medicaid will pay for anything when the wrk is done in a hospital. but when done in a reg clinic ya need an approval and they take 8 weeks. n more. where can i go? i live in haverstraw in rockland county. but will go to the bx..westchester county...etc if necessary. i need help please im begging.