I'm having somewhat of an opposite problem. I've had a molar that my dentist said we'd "watch" for at least a decade. Well, it started hurting, and it's now deeply cracked, so instead of a $1500 crown years ago, I have to have an extraction and an implant, which will take months and upwards of $5k.
BTW, the dentist charged me $140 for an exam and x-ray, and the endodontist he sent me to for a root canal (who said it was too damaged for that) charged me $130 and sent me to an oral surgeon. So no, not free or cheap.