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Interproximal reduction usually is used for the following indications:
- Primary and tertiary crowding
- Deviations in the width of teeth
- Reconstruction of abnormal shapes of teeth
- Parallelization of proximal contact surfaces
According to Dr. Goldbecher, this technique can be used for the following indications:1
- Abnormalities of crowding less than 5 mm per jaw
- Deviations with differences in the total width of teeth
- Management of unaesthetic inter-proximal spaces
“The international literature shows that there are different opinions on the overall gains that can be achieved in the dental arch. Taking into consideration the generally accepted opinion that 50% of the enamel should be preserved, most sources state that 6.5 to 9.0mm per jaw are justifiable values. When all teeth up to the second molar are included, the space that can be gained actually is max. 11 mm."2
1 From: Dr. Heiko Goldbecher (2015): Approximale Schmelzreduktion (ASR) – Routine in der Kieferorthopädie?, KN 11 2015, S. 28-29
2 Ludwig, Björn et al. (2009): Approximale Schmelzreduktion in ZMK Praxis: Selbstligierende Brackets, S. 195; URL: https://www.thieme-connect.de/products/ebooks/pdf/10.1055/b-0034-44498.pdf, Stand: 16.10.2015