It is very important to know your indices and all classification systems, and we recommend you practice applying them to come cases. Practicing will help improve your performance under pressure and in exam situations.

The most important indices you should know for the MOrth are the following indices:

Peer Assessment Rating (PAR)

Index of Orthodontic Treatment Need (IOTN)

Index of Orthognathic Functional Treatment Need (IOFTN)

In addition to the known indices such as:

Incisor Classification (British standards Institute)

Canine Classification

Molar Classification (speaking of occlusion, it is recommended to memorise Anderson’s six keys of occlusion)

Cleft lip & left treatment outcome