TMJ Problems After Orthodontic Treatment: Pre-Treatment Assessment, Chewing on One Side, and Whether Habit-Related Asymmetry Can Be Reversed

Will orthodontic treatment also improve my TMJ or asymmetry?

Orthodontic treatment does not automatically resolve TMJ disorders or facial asymmetry [1]. Cases have been reported where symptoms appeared or even worsened when treatment proceeded without assessing the condition of the jaw joint beforehand [2]. When orthodontic treatment changes tooth alignment, the way the upper and lower teeth meet (the bite) changes and may need readjustment, so the order of assessing the TMJ first and then proceeding with orthodontics is treated as important [2].

When DentStat analyzed about 1,600 patient comments on worsening after orthodontics and causal habits in YouTube dental content, feelings of betrayal such as “My jaw got more crooked after braces,” regret over realizing lifestyle habits too late, and resignation that “it’s skeletal, so nothing can be done” came up repeatedly [4].

My braces are finished, but my jaw clicks and hurts. Why?

Complaints of jaw symptoms after finishing orthodontic treatment are not rare, and the cause is hard to pin down to one thing [1]. Bite changes, TMJ problems that were already latent, and habits such as grinding can act together [1]. Teeth shifting back because a retainer was not worn, throwing off the bite, is also mentioned as one cause [1]. Rather than leaving symptoms alone, an assessment in Oral Medicine or Oral & Maxillofacial Surgery to identify the cause may be needed [2]. The comment analysis also found many cases of new joint noises and pain after orthodontic treatment ended [4].

Does a habit of chewing on only one side create asymmetry?

Chewing on one side puts uneven strain on one jaw joint and its muscles and is cited as a factor in asymmetry and joint strain [1]. However, one side may develop and enlarge or, conversely, shrink, so the habit alone does not determine the result [1]. Leaving a gap for a long time after a back tooth is extracted on one side, or having treatment concentrated on one side, can also lead to chewing being concentrated on one side [1]. Posture habits such as resting the chin on a hand, sleeping on one side, and standing with weight on one leg are also assessed, and their relationship with posture and the spine may need to be checked [1]. Balanced chewing on both sides is described as reducing strain, but interpreting changes that have already appeared requires a diagnosis [1].

If I fix my habits, will existing asymmetry go back?

Correcting habits mainly aims to stop progression and prevent it, not to reverse skeletal changes that have already occurred [2]. Changes that stem from the skeleton may be irreversible, and attempts to compensate in the opposite direction, such as “chewing on the other side” or “resting the chin on the other side,” can create new strain and are not recommended [1]. Whether it is skeletal and how much improvement is possible are confirmed through diagnosis such as CT, and the approach is decided in consultation with a dentist [2]. In the comment analysis, questions such as “If I fix my habits, will it go back on its own?” came up repeatedly [4].

Common myths and facts

Myth	Fact
Orthodontic treatment alone automatically fixes TMJ problems and asymmetry	Worsening has been reported when there is no TMJ assessment before treatment [2]
It came from habits, so fixing the habits will reverse it on its own	Correcting habits aims to stop progression and prevent it, and skeletal changes may be irreversible [2]
Chewing or resting the chin on the opposite side will reverse it	Compensating in the opposite direction can create new strain [1]
Asymmetry is only a problem of the face	Its relationship with posture, the spine, and the pelvis may need assessment [1]

For orthodontic procedures, sequencing, and TMJ considerations, see the orthodontics guide. For an overview of TMJ disorders, see the TMJ disorder guide. For dental clinics by region, see Find a Dentist.