Just completed 12 cavities with my 9 year old DD. She is autistic and we had never managed to get her in the chair for even a cleaning. She did fantastic, borrowing her sister ipod so she can listen to HSM really help, as did holding a stuft animal. Think it really helped that we used a pediatric dentist and the dentist had planned on doing everything in 4 appt, with a few week in between. We went ahead and did the nitrious so she didn't have to have any injections and they were able to complete everything in 2 visits. Insurance normally doesn't cover the nitrious, but they put a note on the ins form that they used it do to her autism and they ended up paying 80%. We do have good insurance, but they will only cover 80% of the cost of amalgam fillings and her dentist only does composite. So even with the insurance it was over $700.
I used to work in the front office of a dental office, so I knew we had to get these teeth filled. Also at 9 she has only lost 8 teeth. Each tooth takes 5-6 mos to come in. She lost her first tooth at 7.5, so figured she will have the remaining teeth for a while