CT scan is a possibility, although not a very good one. Dental implants are non-magnetic; I am surprised that braces are not.
Have they considered an auto-immune disorder? A curious pathology; may the Lord provide an answer.
They have considered the auto-immune possibility. She has had strep in the last month - the doc asked about that. More blood tests today. She is supposed to go to camp for two weeks starting Saturday and the doctor did not forbid it.
Thanks for praying.