Quick answer
Yes, keep your most recent aligner trays. They can serve as a short-term backup if a retainer breaks or is lost, and they give your dental team a physical record of your progress. Older trays from earlier stages can be responsibly recycled.
22 hours
Daily aligner wear time
Key takeaways
- Save your final set of trays as a temporary backup to help hold your smile in place if a retainer is lost or damaged.
- Older trays document how your teeth moved, which can help your dental team review your progress.
- Consistent wear keeps results stable, so a retainer remains the long-term solution rather than an old tray.
- Trays you no longer need can be cleaned and recycled instead of tossed in the trash.
A note from Dr. Brandon Murphy, DDS
“I tell my patients to treat their final trays like a spare key. You may never need them, but on the day a retainer cracks or disappears, having that set on hand can save your smile from unwanted movement until we get you a lasting replacement.”
1
Clean each tray
Rinse the trays and gently clean them to ensure no debris or residue remains before storage.
2
Dry completely
Let trays air dry fully to discourage odor and buildup.
3
Label and organize
Keep your final set separate and clearly marked so you can find it quickly in an emergency.
4
Store somewhere cool
Place them in a sturdy container in a drawer or cabinet, not in a hot car or by a window.
Use these
- Keep your final trays as a temporary backup
- Store trays clean, dry, and in a cool spot
- Recycle older trays through a proper program
- Rely on a fitted retainer for lasting results
Avoid these
- Leaving trays in a hot car or sunny window
- Reusing worn trays as a permanent retainer
- Tossing trays loosely into curbside recycling
- Skipping a replacement retainer after a loss
Q: Is there any reason to keep old Invisalign retainers?
Yes. Keeping your most recent set gives you a short-term backup if a retainer is lost or breaks, and it can help prevent your teeth from shifting while you arrange a replacement. Your full collection also serves as a physical record of how your smile changed.
Q: What am I supposed to do with my old Invisalign trays?
Keep your final trays clean, dry, and stored in a cool place as a temporary backup. Older trays that no longer fit can be recycled through a dedicated program rather than reused to move teeth.
Q: Do I throw out my old aligners?
It is better to recycle them than to toss them in the trash. Clear plastic trays usually do not belong in curbside recycling, so look for a mail-in or in-office recycling program and hold onto your last set as a backup.