Dental Checkups - A Must for Young Children "As soon as your child has cut his milk (baby) teeth, about the age of two years, it's time to plan semiannual visits to the dentist." I guess this opinion varies. I was told by a pediatrician that once the teeth come in, it's time for a dental appointment. I was told by another pediatrician that unless there were dental issues, you can wait for the first dental check up. I was told by our dentist recently that it is a good idea for my 3 year old to come to dental check ups to get used to them and see what a dentist appointment looks like. The key here is to start developing a positive attitude about seeing a dentist. This is super important because my dental appointments as a child were not positive. They were incredibly unpleasant. So unpleasant that I kept my kids from going to the dentist until they were older. I wanted them to be prepared. Thankfully they have really good teet...