Had braces as a kid, after I got them off my ortho said I had an over jet due to tongue thrusting. He kept me coming back until I was 22, gave me swallowing exercises to do, special retainers, etc. I stopped going because it didn't seem like it was working. Now I'm 28 and I feel like my over jet has gotten worse but I don't know which treatment (if any) would work since the apparent cause is tongue thrusting. I don't even know if the over jet is big enough to need treatment.