A comparison of the reliability and validity of 3 occlusal indexes of orthodontic treatment need

Orthodontic Treatment: Need and Demand in North Karnataka School Children

“…The AC had lower reliability as compared to DHC, but it belonged to the same high category, according to interpretation of Landis and Koch [17]. In a study done by Beglin et al, the kappa coefficients were found to be 0.93 AC and 0.93 DHC, with good inter examiner reliability [18].…”

Objectification of Orthodontic Treatment Needs: Does the Classification of Malocclusions or a History of Orthodontic Treatment Matter?

“…As mentioned above, objective indicators such as the IOTN are frequently used in epidemiological studies. Their use guarantees repeatability of results, and allows researchers to compare their results to those obtained by others [13][14][15]. The crucial point, however, is, what is the relationship between subjective (i.e.…”

An Overview of Selected Orthodontic Treatment Need Indices

“…The validation panel judged grades 1-4 to represent 'no or little need', grades 5, 6, and 7 as 'borderline need', and grades 8, 9, and 10 to represent a clear need for treatment on aesthetic grounds. However, different cut-off points and major changes in the Aesthetic and Dental Health Components of the IOTN has been suggested (Lunn et al, 1993;Beglin et al, 2001). An improved reliability has been reported for the IOTN if both Dental Health and Aesthetic Components were reduced to three grades (Lunn et al, 1993).…”

“…An improved reliability has been reported for the IOTN if both Dental Health and Aesthetic Components were reduced to three grades (Lunn et al, 1993). In an interesting study, Beglin and co-workers (Beglin et al, 2001) assessed the validity of DHC and the AC of the IOTN by a group of American orthodontists and suggested the optimized cut-off points of 3 and 5, respectively. Sometimes, there is a discrepancy between the DHC and AC grades and they can be contradictory.…”