Some seem to be talking about a safety facebow and others the wired in facebow.
For any non-believers of the wired in part look up an article by Dr Armstrong in 1971 in the American Journal of Orthodontics. He taught at the U of Washington and thought full time heavy pressure at the right age would do the job in a matter of months. If the parents wanted their kids to be treated there (saving money), and the case required it, they had to agree to have the patient wear it full time 'tied in'. Patients were pre-adolescent, once permanent dentition was in place it no longer made sense to apply pressure like that. The longest time mentioned in the article was 6-9 months with most around 4 months.
Not surprisingly, not all kids seemed to like the idea but had to 'cooperate' because the facebow would not come out. Pictures showed mostly combination or high pull headgear. As my orthodontist pointed out at the time to my mother and I, all I had to do was just not take it off. I was 13 and she made sure I wore it unless there was a reason to take it off. It was a simple blue elastic cloth neck strap and pad, with the facebow and way back in 1971-73 it made my life miserable.
