How long is acceptable between appointments for the orthodontist? My son has train tracks on his bottom teeth and a removal brace for his top - he will get train tracks on these eventually too. We are currently between 10 and 12 weeks between appointments which feels far too long. When I had braces as a teen I went every 6 weeks. Their books are full to the brim but because they have accepted so many the treatment feels extremely delayed. I've just called now because one of ds brackets is about to fall off and they can't see him for 2 weeks. It also seems that it's almost impossible to change orthodontists as the one we are with has basically already been paid. I've complained once before and his appointment was changed to 9 weeks instead of 12, but we have gone back to how it was straight away. AIBU to complain again?