Reminds me of Aspen Dental. I never gone there, but my brother went to one when he lived in Michigan. He went there due to a chipped tooth, and I believe they drilled his tooth out in preparation and then never finished the job. He later had to get the tooth repaired at a state dentist which repaired the tooth as good as new. They also told him he needed more work done, but the other dentist told him his teeth were mostly fine.
I can't stand dentists myself. I've always had fears of going to the dentist, and hearing stories like this and from my brother, really scared me into not going to them often.
It makes you wonder how many dentists out there are fucking over people's teeth.