The Index Of Orthodontic Treatment Need- A Review

Malocclusion is one of the commonest dental problems. Correction of malocclusion requires evaluation before planning Orthodontic treatment. Evaluating various types of malocclusion is an important aspect for planning Orthodontic treatment. An epidemiologist uses orthodontic indices as a tool to analyse the prevalence and severity of various types of malocclusion. There are several methods of grading and assessing malocclusion. The index of orthodontic treatment need (IOTN) is one among them. The aim of this review article is to brief about IOTN orthodontic index, its method of application and the various advantages and limitations of using this index.