I took DS a few months ago at age 2.5. I knew he was supposed to have an appointment at baout the age of 2, however I am scared of the dentist so I had no plans to take him. He fell over and hit his front tooth on the wooden toybox, the tooth started to go grey so I made an appointment. His teeth are beautifully healthy (which surprises me). Has he no hurt his tooth, he still wouldn't have been to the dentist. Dont feel bad, you certainly aren't the only one, all you can do is learn from this and take your other children earlier.