They say to always keep tongue at roof of mouth and to chew the gum for stronger jaw muscles. No idea about what their patients do or don't as far as keeping up.
Apologies, I believe I'm misunderstanding you. Are you saying they
tell adults with jaw development issues to do all that in order to
get them into the correct place? (Also, I was just saying it's hard
to see most would constantly keep their tongue at the top of their
mouth and chew gum routinely.)
Retainer is to keep the teeth in place so they don't shift. So/same/similar.
So the Retainer that is given by the Orthodontist to keep the teeth
in place so they don't shift, additionally works in keeping the jaws
from relapsing also?