I don't know about pediatric dentists but we also just took DS for his first visit to the dentist (while DH and I went for check ups too). The dentist was great. DH went in with Jack while I waited in the waiting room with the baby. Apparently the dentist easily put Jack at ease and he opened his mouth when asked and was happy for the mirror to be put in etc. He loved the experience, especially when he was given a sticker and a tooth brush! Now he asks to go back to the dentist LOL!! I am sure Milo will be fine too.