Neither overbite, underbites, crowding, or alignment issues have been shown to cause any problems at all. As for treatment modalities, these studies have been unable to find any links between the use of headgear, extractions, rubber bands, oral surgery, or any other orthodontic treatment and TMJ problems.

Is orthodontic headgear bad?

The Downside of Headgear

Besides being unattractive, uncomfortable, and bothersome, headgear can have some undesirable side effects. Headgear is commonly used to correct overbites by pushing the upper jaw and teeth backward, while also preventing the jaw from growing.

Does headgear move your jaw?

Headgear works by exerting force on the upper or lower jaw. It can also create space between teeth to eliminate overcrowding or overlapping teeth.