The lower jaw does not move during orthodontic treatment. The teeth move. The teeth can be moved to a more stable position maintaining a harmony woth the muscles the upper teeth and the tmj joint. Jaw muscles, tmj and occlusion is a topic that takes 3 years to study amd further entire lifetime kf understanding the reltionship with each other. Its just like how the nose is connected to smell, tongue to taste and also heart to life.
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Please consult an orthodontist for further knowledge and advice. I would also recomend not following google. Understanding the tooth movement takes almost 10 years of study. Please visit your dentist.