I went to him based on his radio program. He estimated the work necessary then insisted I pay the entire bill in full in advance to receive discount.
His work was sloppy, he left decay in my teeth under his new fillings (seen by next dentist), let me leave office with huge hole in one tooth, and I almost choked to death from his taking immpressions!
I went to a different dentist, ending my contract with him, yet he refused to refund my money for work never done and work needing to be re-done!
Finally had to hire a lawyer. After his screaming obscenities at both me and my lawyer in his office (no kidding!), he made restitution, after much stress.