I Used Meth For Years. During That Time I Lostall

I used meth for years. During that time I lostall my teeth and also developed the habit of holding my lower jaw to the side all the time. I have been off drugs for 3 years and also now have dentures. But I still hold my lower jaw to the side and I also move my jaw back and forth without even knowing it. How do I stop this? It looks AWFUL