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orthodontic indication groups

Based on the so called KIG - classification the orthodontist can categorise the gravity of the malpositioned teeth or jaw. Furthermore it is used to determine the medical necessity of an orthodontic treatment.

It is divided in 5 classifications.

KIG 1 and 2 : from the point of view of the statutory health insurance there is no medical necessity for an orthodontic treatment. This means the costs must be paid for by the patient. There is an option for a private supplementary insurance which may cover the orthodontic treatment costs.

KIG 3 – 5: you will receive a fixed partial payment from your health insurance provider. it can however be the case that there will arise additional costs due to modern techniques and various treatment options. If the orthodontic treatment exceeds that fixed price, the patient must bear the additional costs. There is also an option to make a dental supplementary insurance with orthodontic services.


definition of the KIG classification

  • KIG 1 - the diagnosis is a light tooth misalignment. There is no medical necessity for a treatment. The health insurance does not participate in this case.
  • KIG 2 - the diagnosis is a malocclusion with the necessity of a medial treatment but the tooth correction is not subsidized by the medical insurance.
  • KIG 3 - the diagnosis is a pronounced malposition which needs to be treated.
  • KIG 4 - the diagnosis is a very pronounced malposition. From the medical point of view the treatment is an urgent request.
  • KIG 5 - in this classification the patient suffers from a massive tooth misalignment. From the medical perspective an orthodontic therapy is indispensable.


There are 11 groups of medical causes:

  • tooth eruption disturbances
  • developmental disturbances in the head area
  • undershot bites (hypodontie)
  • distal bite position of the teeth (due to recession of the lower jaw)
  • mesial bite position (due to protrusion of the lower jaw - progenia)
  • open bite
  • deep bite
  • buccal occlusion or lingual occlusion (bilateral cross-bite)
  • deviation of the jaw widths (end to end bite)
  • deviation of the contact points (close proximity of the teeth)
  • lack of space

tabellarische Übersicht der Gruppen »

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