The Last Aligner Tray Is Not a Retention Plan
Reaching the final tray in a series can feel like finishing orthodontic treatment, but maintaining tooth position requires a retention plan. Teeth can move after active treatment. The clinician should explain what comes next rather than leaving you to decide how long to keep using the last aligner.
Confirm the transition
Ask when your final movement assessment will occur, which retainer is recommended, and how it should be worn and cleaned. A retainer has a specific role and instructions. Do not assume a worn treatment tray is suitable indefinitely simply because it still fits.
Plan for damage or loss
Find out how to contact the team if a retainer breaks, disappears, or becomes difficult to seat. Avoid forcing a device onto teeth that seem to have shifted. Follow-up can assess both retention and oral health. A clear maintenance phase protects the effort invested in treatment by making ongoing responsibilities explicit, including wear, cleaning, inspection, and what to do when the fit changes after the active series has ended.