What types of retainers are there?

Tightness when putting a retainer back in after a period of non-wear usually means the teeth have moved. Do not force the retainer in. Contact your provider for advice before attempting to wear it, as forcing a tight retainer can damage the teeth or the appliance. Teeth can begin to move within days, and a retainer that was comfortable can feel tight after as little as a week of non-wear. Your clinician may advise wearing it full time for a short period to settle things, or may suggest a new retainer or a short course of aligners if the teeth have moved significantly.

Contact your provider as quickly as possible because teeth can begin to move within days without a retainer in place. Your clinician will advise on whether a replacement can be made from existing records or whether a new scan or impression is needed. The process depends on retainer type. Wearing a retainer that no longer fits comfortably is not advised, and a replacement made from old records can be inaccurate if teeth have moved since. If you cannot be seen straight away, ask for advice on interim wear and book the earliest available appointment.