EPIDEMIOLOGY OF MALOCCLUSION

THE COMPONENTS OF IOTN INDEX

• SKELETAL AND DENTAL COMPONENT

• DENTAL AND ESTHETIC COMPONENT

• DENTAL AND SOFT TISSUE COMPONENT

• NONE OF THE ABOVE

IOTN INDEX WAS GIVEN BY

• SUMMERS

• GRAINGER

• MASSLER AND FRANKEL

• BROOK AND SHAW

1. Peer Assessment Rating (PAR) is primarily used to:

• 1. Rank patients in need of orthodontic care

• Measure pre- and post-treatment occlusal alignment

• 1. Assess the aesthetic needs of patients

• Compare different orthodontic techniques

IDENTIFY THE QUALITATIVE CLASSIFICATION OF MALOCCLUSION

• IOTN INDEX

• TPI INDEX

• OCCLUSAL INDEX

• ANGLES CLASSIFICATION

4TH KEY OF OCCLUSION

• MOLAR RELATIONSHIP

• ABSENCE OF ROTATION

• CROWN ANGULATION

• CROWN INCLINATION

7TH KEY OF OCCLUSION

• CROWN ANGULATION

• CROWN INCLINATION

• BOLTONS RATIO

• CURVE OF SPEE

NUMBER OF GRADES IN IOTN INDEX DENTAL COMPONENT

• 9

• 6

• 8

• 5

UNDER AESTHETIC COMPONENT OF IOTN INDEX BORDERLINE NEED OF TREATMENT COMES UNDER

• 1-4

• 3-5

• 6-8

• 5-7

IN GRADE 5 OF DENTAL COMPONENT OF IOTN INDEX OVERJET IS GREATER THAN

• 6 mm

• 7 mm

• 8 mm

• 9 mm

1. The Index of Orthodontic Treatment Need (IOTN) is used to:

• 1. Assess the complexity of orthodontic treatments

• Rank the need for orthodontic treatment based on dental health and aesthetics

• Measure the success of orthodontic treatments

• 1. Prioritize orthodontic treatment based on patient age