For mine:
I suspect my orthodontist messed up my jaw as my bite is now skewed to one side (left is deeper than right).
Reason for why: I got removable braces (was/am afraid of glued braces in regards to feeling and social stigma) and they had a bridge in the back. Since the resting position of the tongue is around where the the metal wire bridge was it cut into the sides and I probably compensated by lowering my tongue position.
If I swallow the accumulated saliva I’d push the tip of my tongue against my front teeth and by that pushing apart the gap between my jaw rows.
The orthodontist obviously denied it but I am still thinking about that. and it would all add up…