I went to one dentist relatively recently, they were highly rated on Google, they said I needed eight, EIGHT fillings. I had them do two of them. Then they stated that I had to get so many I was going to go over my benefits and it would cost me $1500 or so after it all, out of pocket. I went down the street, had an evaluation, they said I had one cavity. They filled it, and I was on my way. Then months late, the place I had gone that said I had eight fillings, one of the fillings I let them put in fell out after only ~1 year. I could have called them up and asked them to fix it, ideally for free, but they lost so much of my trust I just had the new dentist fix it.

Anyhow, it's hard to trust dentists.