M.R.
I have an awesome childrens dentist in NE. His name is Dr. Page and h'es with Pediatric Dentistry. They have two locations, but we see him at 2824 NE Wasco (it's a medical building off 28th, next to Fred Meyer).
His number is: ###-###-####
He's great. My daughter loves him and started seeing him when she was 4. He's very gentle and she's even had a tooth extracted by him and she's still not afraid to go back.
Good luck.
M.