Who may find this relevant?
People who previously had braces or aligners and notice a new change in tooth position.
← All explanationsOrthodontic relapse
Why do teeth shift again after braces?
Orthodontic relapse is a renewed change in tooth position after orthodontic correction, particularly towards a former position. Teeth can also change throughout life. A later shift therefore does not automatically prove that the earlier treatment was faulty.
For training & practice ↓
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Teeth do not become immovable
After correction, the surrounding tissues need to adapt. Later changes can also influence tooth position.
Retention provides stability
A fixed or removable retainer is intended to maintain the achieved position. Wear, cleaning and reviews are agreed individually.
Report changes early
Contact the treating practice if a retainer loosens, a tray no longer fits or teeth visibly shift. Do not force old trays into place or reshape them yourself.
At a glance
What is examined?
Current position, bite, retainer and the condition of teeth and gums.
What happens next?
Individually discussed options for stabilisation or correction, if needed.
Knowledge in motion
Explained in 36 seconds.
Three steps. No audio.
Each scene can also be selected manually.
Silent educational film with German on-screen text and simplified teaching images. Not a patient case or a promised treatment outcome. The full English explanation is available below.
Read the film text in English
Teeth do not become immovable
After correction, the surrounding tissues need to adapt. Later changes can also influence tooth position.
Retention provides stability
A fixed or removable retainer is intended to maintain the achieved position. Wear, cleaning and reviews are agreed individually.
Report changes early
Contact the treating practice if a retainer loosens, a tray no longer fits or teeth visibly shift. Do not force old trays into place or reshape them yourself.
Often confused
Relapse or refinement?
Relapse describes a renewed change after correction. Refinement is an additional planned correction phase within aligner treatment.
Quick answers
Can teeth change despite a retainer?
Yes. A retainer may be damaged or no longer working adequately; other causes are also possible. The actual situation needs examination.
Does this automatically mean new aligners?
No. Tooth position, bite, retainer and oral health are assessed first. Whether further correction is appropriate follows from that assessment.
Is a retainer an active brace?
Its main role is to preserve the achieved position. It should not be used independently as a device to correct teeth back into place.
At the practice
For a personal conversation
An editorially suggested question for a conversation with Dr. med. dent. Niusha Barahmand Pour:
Is this relapse, and what role does my existing retainer play?
Previously straight teeth shifting again? An examination provides the basis for the next steps.
Discuss teeth shifting againAppointment selection at DoctolibLearning layer for training & practiceUnderstand terminology and deepen knowledge
- Retention
- Maintaining an achieved tooth position.
- Relapse
- Renewed change following an earlier correction.
- Retainer
- A fixed or removable device intended to maintain tooth position.
Make the distinction
Relapse describes a renewed change after correction. Refinement is an additional planned correction phase within aligner treatment.
Sources and context
Editorial research: . General information, not an individual diagnosis or treatment recommendation. Teaching illustrations are simplified and do not depict a patient case.