I have heard great things about Cook's Childrens on Lillian Miller in Denton, Dr. Goff and the other doctors are suppose to be great. I have a friend that uses Dr. Goff and she loves him.
I take my kids to Cook's Childrens in Flower Mound on Firewheel. We see Dr. Jill, but have seen Dr. Amiee, they are both great. I have heard good things about the other two doctors in the office as well but do not have experience with them.
For ped dentist we use Dr. Duffy also in Flower Mound. Her office is great very kid friendly with a small movie theater inside and a slide. The staff is kind and friendly and Dr. Duffy is awesome.