Be wary of dental chains that offer cheap New Patient Exams/Cleanings
This may be anecdotal, but it felt worth mentioning. I went to a popular chain for a $57 new patient exam, cleaning, and x-rays. They found multiple cavities and I spent $600 on getting them fixed. I could only afford to do half of them at once, and was going to come back to finish on another day.
In the mean time, I got a new job that offered dental insurance. So I went to a private dentist office instead to finish up the work. They said I had zero cavities or problem teeth. I went to a second office just to be safe, and they said the same thing.
It seems pretty scammy to me. Just be careful.