how much does a cavity cost
gm DIS Veteran Joined: Mar 3, 2000. Messages: 1,105. Today I took ds to the dentist. We have no dental insurance so it was cash. The dentist was offering free exam and xrays and my ds felt he did have a cavity so we went and yup he had 1 cavity. So I asked how much to take care of it and they said $286. And as a cavity gets worse and not better, I went ahead and payed for the service. They fixed the cavity and did the filling same color as teeth not the silver filling. Took about 20 minutes.