My daughter was on medicaid and a dentist convinced her to let him remove ALL of her teeth when she went in for extractions.

Broke a needle in her mouth and sent her home with the tip still in there. Called her back a few days later, tried to remove it, pushed it into the nerve. She spent a week in the hospital. Maxo facial guy used a machine called the navigator to remove it.

Lost half her jaw bone to the infection from the needle tip
Reduced sense of taste and she had wanted to be a chef

Yeah, they had to call in the guy that fixes cleft palates in 3rd world countries to save my daughter's life.

I broke two teeth within 2 days of each other, needed 2 crowns: $2600 later...

Ugh, dentists. In the midst of an extraction—about halfway—local anesthetic stopped working. He injected more, and I accidentally kicked him: still not working. They get out the nitrous, and I’m excited, finally some pain relief.
No. No effect on me WHATSOEVER.
So he finished fast as he could, but PAIN. I had to pay too, least he could have done was give a discount.
Next dentistry was under actual anesthesia. $$$$$.$$