6 months into overbite correction; my face looks thinner. I had no extractions and haven't lost any weight? (Photos)
Doctor Answers 1
Sometimes we see things others don't
Some changes are due to muscles not working as hard as the did or even WILL. If the bite is changing, muscle fibers that have never been used may get some work, and some that were over used will be used less, and just like quitting a gym membership, big muscles that stop being used will get smaller.
It is possible that in time the jaw muscles will appear the same once the bite is settled and "dialed in".