Here in florida we have dental schools that will offer free or veyr low cost to patients in order for the students of the school to get practice. google dental schools in your area and call them to see if they offer anything like this.
I have a large 8" mass growing inside of my abdomen and they will not remove it because I do not have medical insurance and they dont consider it a life or death situation. Some mornings it takes me 30 minutes just to get out of bed. the mass is about a quarter inch from my spine causing extreme pain. If I could find a school that would use me as a guinnea pig to take it out I would gladly take the risk. I cannot afford medical insurance and appling for medicaid is like jumping to the moon.....so I understand your situation completly.
good luck!