Dento-facial anomalies and the morpho-functional disorders that occur in the development of the maxillaries have an increasing frequency, a study made by Proffit suggesting that the need for orthodontic treatment in children under the age of 18 in the US would be 60% [1,2]. Over time, many authors have tried to evaluate the malocclusions using different types of indices: diagnosis classification indices, epidemiological indices, success rate of the treatment indices, need for orthodontic treatment indices. By reviewing the literature on this topic, a few controversies aroused regarding the reliability, validity and utility of these indices.
Keywords:- evaluation indexes
- orthodontics