Interproximal reduction

What is interproximal reduction and what does it do?

With the help of the interproximal reduction, short IPR, the enamel at the contact points of two teeth is minimally reduced. In the case of crowding, more space may be necessary for the correction of misalignments. IPR achieves this without any extraction. The IPR is carried out with the help of fine polishing strips.

Advantages of interproximal reduction

The extraction of two molars usually creates a space gain of 10-15 mm. However, this rarely corresponds to the really required space, while the interproximal reduction can be used in a very targeted manner and can thus be adapted exactly to the individually required space.

Thus, the required tooth movement is minimized and negative consequences of large tooth movements, such as a root resorption, which is a pathological degradation of tooth hard tissue, is prevented. In addition, the duration of the treatment is shortened.

Aesthetic effects

While the interproximal reduction offers various advantages for the course and the result of the treatment with transparent dental splints, there are no aesthetic effects here. Also the risk of a flattening of the profile is not given.

Amount of reduction

Only very little hard tooth substance is sacrificed. This has no clinical relevance and may even prevent the drawing of teeth. Emerging edges are treated to match the texture of untreated enamel.

Tooth decay and temperature sensitivity

Long-term studies show that enamel reduction has no effect on the temperature sensitivity of teeth and caries risk is not increased.


The treatment is not painful, but similar to the feeling of removing tartar. Therefore IPR is usually performed without local anesthetic.

Daily dental care

If your treating physician deems it necessary for your teeth to be treated with this method, you will be asked to use toothpaste with extra fluoride as your daily dental care at first. Please consult your doctor.