If you lost a removable retainer
The AAO advises calling your orthodontist right away to arrange a replacement. Do not wait until your next routine visit if that is weeks or months away. Your teeth may still be stable, but the longer retention is interrupted, the greater the chance that the old fit will change.
If an Essix-style clear retainer is cracked or warped
Do not keep wearing a sharp, distorted or badly cracked appliance simply to avoid replacement cost. Heat can warp clear plastic, and a retainer that no longer fits the intended tooth positions may apply force in the wrong places. Contact the orthodontic provider and describe what happened.
If the damage is tiny and the retainer still fits, the practice can tell you whether temporary wear is acceptable until a replacement is made.
If a Hawley retainer breaks
Hawley retainers can sometimes be repaired, but that depends on which component is damaged. A fractured acrylic plate, distorted wire or broken clasp should be assessed rather than bent back at home. DIY bending can change the fit and force.
If a fixed bonded retainer comes loose
If one bonding point fails, the entire wire may still look present even though one tooth is no longer being retained. Arrange a check promptly. Avoid pulling on the wire or trying to glue it back. If a loose section is sharp or traumatic, contact the practice for same-day advice on comfort and repair.
Can you use an old spare retainer?
Only if your orthodontic provider says it still fits your current tooth positions. An old appliance can be useful if it was intentionally kept as a backup and still seats passively, but a retainer from an earlier stage of tooth movement may not be appropriate.
Make losing retainers less likely
- Use the case whenever the retainer is out of your mouth.
- Do not wrap it in a napkin at restaurants.
- Keep it away from pets and heat.
- Label the case with a contact method if you travel.
- Ask whether keeping a backup scan or spare retainer is practical for your case.
Sources & further reading
- American Association of Orthodontists — Orthodontic FAQs — Advises contacting the orthodontist promptly after losing a retainer.
- American Association of Orthodontists — Orthodontic FAQs — Advice for broken or stolen removable retainers and post-treatment retainer checks.
- American Association of Orthodontists — Will My Teeth Move Again Post-Treatment? — Why teeth can move after treatment, the role of retainers, and what may happen if significant relapse occurs.
These sources support the general information on this page. Your own orthodontist or dentist should make recommendations for your individual teeth, gums, restorations, appliance and treatment plan.