Adult braces guide

IPR in Orthodontics: Why Enamel Is Sometimes Reduced Between Teeth

IPR creates small amounts of space by carefully reducing enamel between selected teeth. It can be useful, but it should be planned after a full orthodontic assessment — not treated as a DIY procedure.

Updated 11 September 2026Source-based editorial content
Medical note: General education only. Decisions about gum health, enamel reduction, extractions, appliances or emergencies need an examination by your own dental team.
Adult orthodontic consultation before treatment
IPR is a clinical space-management technique, not something to request or perform without a full treatment plan.

What is IPR?

Interproximal reduction means removing a small, controlled amount of enamel from the sides of selected teeth. The British Orthodontic Society notes that it can create space for alignment and can also be used to improve tooth shape.

Why would an orthodontist use it?

Possible goals include relieving mild crowding, improving contact points, reducing small tooth-size discrepancies or avoiding a larger space-creation method in suitable cases.

How is it done?

Clinicians may use fine strips, discs or burs designed for controlled enamel reduction. The amount is measured and planned. It should not feel like “filing down” the visible front surface of a tooth.

Is IPR safe?

BOS guidance states that IPR is a routine technique but requires care, skill and experience, and warns that excessive enamel removal can harm teeth. This is why the plan and amount should be individualized.

Are there alternatives?

Depending on the case, alternatives may include arch expansion, changing tooth inclinations, extractions or accepting a different alignment goal. No single option is automatically best.

Questions to ask

  • Why is IPR recommended in my case?
  • Which teeth will be reduced?
  • How much enamel is planned?
  • What are the alternatives?
  • How will tooth shape and contacts look afterwards?

Sources & further reading

  1. British Orthodontic Society — Interproximal Reduction — Explains IPR, why it is used and why it should follow a full clinical assessment.

These references support general information. Your own dentist or orthodontist should make recommendations for your specific teeth, gums, appliance and treatment plan.