I HIGHLY recommend you to see Dr. Carter Hatton. I went to him as a youth, and plan on taking my children to him. he is a dentist and orthodontist, so you won't have to make multiple visits to different Dr.s.
To get braces this young is such a horrible thing. Your son will end up with braces and retainers for years, and once they come off, his teeth will just revert becuase his young mouth is still growing. I have had many medical professionals explain that Dr.'s who practice this do it b/c it makes them more money b/c the child is in braces for sooo long.
I had very severe teeth problems. I started a retainer around 9 to get my mouth ready, but got my braces on around 12 and I only wore them for a year and a half. I have many friends who got braces around 8 and 9 and still wore theirs for around 5 years, with years of retainers after that. It's unnessecary pain and money to be worn that long. My teeth are still perfect now.
E. Carter Hatton, DDS, MSD
1621 Precinct Line Road Hurst, TX 76054
Tel: ###-###-####