I don't know for certain..but from what I have heard on this is that due to braces being "cosmetic" the doc would not have to do anything but have them removed.
Our son recently entered prison in Ohio, and I called the health care department for the prisons, and they weren't sure about orthodontic care because it doesn't come up often. But, we ended up having the braces removed right before he went in (it was time to do it anyway), and they made him a plastic retainer. The prison has allowed him to use it. I understood from the health care person that dental is on an emergency basis only, so I doubt there would be enough care to keep from getting holes, etc. from unclean braces.
I had braces for 4 years and I cant imagine I would want anyone who didnt know what they were doing touching them much less sub standard care. So I think it would be in everyones best interest to get them off before...