What IPR is

IPR stands for interproximal reduction. It involves gently polishing or reshaping the sides of selected teeth to create tiny amounts of space. This helps teeth move more efficiently during straightening treatment.

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IPR does not damage teeth. It removes only a very small amount of enamel, often less than the thickness of a fingernail.

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Why dentists use IPR

IPR is used when teeth need a little extra room to align properly. It helps:

• Reduce crowding
• Improve tooth rotation
• Prevent unwanted flaring
• Create balanced spacing
• Support predictable aligner movement

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It is especially common in clear aligner treatment.

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How IPR works

During IPR, a dentist uses a polishing strip or a fine dental tool to smooth the sides of selected teeth. The process is quick, controlled and comfortable.

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What you may feel

• Light pressure
• Gentle vibration
• No pain

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Most appointments take only a few minutes.

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How much enamel is removed

IPR removes a very small amount of enamel. Typical amounts range from:

• 0.1 mm
• 0.2 mm
• 0.3 mm

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This is less than the thickness of a credit card.

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IPR benefits vs considerations

Is IPR safe

Yes. IPR is a widely used, clinically safe procedure. The amount of enamel removed is minimal and does not weaken teeth. Dentists follow strict guidelines to ensure long‑term tooth health.

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Does IPR hurt

IPR should not be painful. You may feel:

• Light pressure
• Mild vibration
• Slight warmth

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Most people describe it as quick and comfortable.

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How IPR supports clear aligner treatment

IPR helps aligners fit better and move teeth more efficiently. It can:

• Reduce crowding
• Improve rotation
• Prevent gaps
• Enhance tracking
• Support predictable results

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It is one of the most important steps in achieving a straight smile.

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When IPR is recommended

Dentists may recommend IPR if you have:

• Mild to moderate crowding
• Teeth that overlap
• Teeth that rotate
• A narrow arch
• A risk of flaring during straightening

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Your dentist will explain exactly where and why IPR is needed.

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How ToothFairy helps

Virtual dental assessments

Upload photos and get expert advice before starting treatment.

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Clear aligner treatment

Dentist‑supervised straightening with remote monitoring.

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IPR guidance

Dentists explain when and why IPR is needed.

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Progress tracking

Monitor tooth movement and aligner fit through the app.

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When to contact a dentist

You should seek advice if you notice:

• Sensitivity after IPR
• Difficulty wearing aligners
• Teeth not tracking
• Unexpected discomfort

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Dentists can adjust your plan and ensure everything stays on track.

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Your IPR questions answered

Is IPR permanent

Yes. The enamel removed does not grow back.

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Does IPR weaken teeth

No. The amount removed is extremely small.

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Is IPR always needed

No. It depends on your tooth alignment.

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Can IPR change how my teeth look

It improves alignment but does not change tooth shape.

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