The demand of orthodontic treatment for malocclusion is increasing in Indonesia. Malocclusions describe a spectrum of a deviation from the ideal to very severe anomalies. Dentist may have differing views of what should be. The IOTN is a useful tool for those interested in research into epidemiology of malocclusion. IOTN has two parts: the Aesthetic (AC) and Dental Health (DHC) components. The ICON index has been developed recently and claims among other things, to evaluate orthodontic treatment complexity. The index comprises five weighted measurements, and some of its structure to IOTN. The sum of the weighted scores is interpreted using cut-off values and score ranges to indicate the treatment need, complexity and degree of improvement. It is claimed that using ICON to make these assessments is more efficient than IOTN because it requires only a single measurement protocol. This literature study explain that the ICON provides an acceptable alternative to IOTN.
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