Teeth sore from aligners

Clear aligners can make teeth and the periodontal ligament sore while they apply planned pressure, but severe or localised pain needs review.

An aligner changes force on the crowns of the teeth, and the periodontal ligament around each root responds as bone is remodelled. Tenderness is often strongest when a new tray is fitted and should feel like pressure or aching rather than sharp pain.

Wear the tray according to the prescribed schedule, check that it is fully seated, and use the smoothing tool or contact the orthodontic team if an edge rubs the cheek. Choose soft foods temporarily and use only pain medicine that is appropriate for you and used as directed on its label.

Arrange an orthodontic review if pain is sharp, confined to one tooth, worsening, or accompanied by swelling, a loose attachment, a cracked tray, or a tooth that does not track. Seek urgent care for facial swelling, fever, difficulty swallowing, or difficulty breathing.

Ask whether the force and fit of this tray are appropriate, whether an attachment or tooth needs checking, and what pain-relief options fit your medical history. Ask what signs mean you should stop using the tray until it is examined.