What is IPR for?
It can create space for planned tooth movement and change contact shapes.
← All explanationsInterproximal reduction (IPR)
Why is enamel sometimes reduced between teeth?
Interproximal reduction removes a controlled amount of enamel between neighbouring teeth. This can create space during planned orthodontic treatment. The removal is permanent and must be carefully justified and limited.
For dental trainees & teams
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Space at the contact surfaces
IPR means reducing enamel on selected sides of teeth in a controlled way to create space for planned tooth movement.
Planning comes first
Tooth shape, enamel and space requirements need assessment. Whether IPR is suitable depends on the overall orthodontic plan.
Smoothing and ongoing care
After reduction, the surfaces are smoothed and polished. Enamel does not grow back; filing teeth yourself is not a safe alternative.
At a glance
When is it considered?
When examination and orthodontic planning justify limited enamel removal.
What are the basic steps?
Planning, controlled reduction, smoothing and polishing. It requires appropriately trained professionals.
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Often confused
IPR or crown preparation?
IPR treats selected contact surfaces to create space. Crown preparation shapes a tooth for a covering restoration.
Quick answers
Is IPR needed with every aligner treatment?
No. It is one possible planning step, not a routine part of every course of orthodontic treatment.
Does the removed enamel grow back?
No. Benefits, extent and risks are therefore discussed beforehand.
Can sensitivity occur afterwards?
Temporary sensitivity is possible. Persistent symptoms should be discussed with the treatment team.
At the practice
For your consultation
A question to discuss with Dr. med. dent. Niusha Barahmand Pour:
Why would IPR be useful in my plan, and how will my enamel be protected?
At the practice, the findings, personal wishes and possible next steps are discussed through a consultation and examination.
Space requirements can be discussed in person before orthodontic treatment.
Discuss orthodontic treatmentChoose an appointment on DoctolibLearning for dental trainees & teamsUnderstand clinical terms and build your knowledge
Build on the simple explanation with clinical terms, key distinctions and a knowledge question.
- Interproximal
- Between neighbouring teeth.
- IPR
- Interproximal reduction: reducing enamel between teeth.
- Polishing
- Smoothing the treated surface.
Know the difference
IPR creates limited space by removing enamel; an attachment is a bonded shape that helps guide tooth movement.
Sources for further learning
Sources and context
Editorial research: 23 October 2026. This explanation covers general principles and does not replace a personal examination. Suitable treatment is discussed following individual assessment.