The clicking jaw nobody could explain

Before treatment — in their own words

The jaw had been clicking for three years. Not dramatically, not loudly, but consistently — a soft pop at the opening that she could feel more than hear. She had described it to her GP, who checked for joint problems and found none. She had seen a physiotherapist, who worked on her neck and jaw muscles and provided some temporary relief. The clicking returned within weeks. It had become, eventually, just a background presence she had learned to live with.

She came to the consultation asking about straightening her teeth. She mentioned the clicking almost as an afterthought.

The clinical picture

The joint clicking was audible on examination — a reciprocal click on opening and closing. But the joint itself was healthy and the click was reduction-type, benign. What the examination also revealed was a left-sided posterior crossbite with a functional shift: at the point of first tooth contact, the lower jaw was deflecting to the left to avoid the posterior interference, putting the mandibular condyle under asymmetric loading. The midline appeared deviated by 2mm on closing. At maximum opening, the midlines coincided — confirming the functional shift.

The crossbite was the source of the click. Resolving the crossbite would resolve the deflection.

The plan

Invisalign Comprehensive treatment was planned to expand the upper arch on the left side and align both arches, eliminating the posterior crossbite and the functional shift. As the crossbite resolved during treatment, the deflection of the lower jaw at closure gradually disappeared. Attachments were placed to support expansion movements. Interproximal reduction addressed mild anterior crowding that had accompanied the constricted arch.

By month ten, the patient reported that the clicking was significantly reduced. By month fourteen, it had stopped.

The outcome

At debond, the crossbite was fully corrected. The functional shift was gone. The midlines coincided on both opening and closing. The jaw joint clicking, which had been the presenting symptom and which no previous clinician had traced to a dental cause, had resolved completely. The patient was fitted with Vivera retainers and discharged with normal jaw function.

She has since referred three friends, all of whom came in describing jaw symptoms and left having had their bite examined for the first time.