For lost or broken retainers call and schedule to take impressions for new retainers before the teeth move out of alignment. Without retention they can move within a matter of days even if years have passed since your initial treatment. So don’t procrastinate-new retainers cost far less than re-treatment.
For loose bonded retainers call the office ASAP. Usually we can add adhesive if only 1 or 2 teeth are unattached and the wire is not broken. If more than 2 teeth are unattached or the wire is broken we will need to make a removable retainer to retain your teeth until a new bonded retainer can be made.
If you cannot get back to the office right away, you can make a snug fitting temporary retainer out of a boil, soak, and mold sports mouth guard. These are easy to find at sports equipment stores and pharmacies. Make sure to get the kind that fits upper and lower teeth to keep them from shifting until you get back to the office.