Abstract: The present study assesses the validity and reproducibility of two occlusal indices for epidemiological studies—the Dental Aesthetic Index (DAI) and the Dental Health Component of the Index of Orthodontic Treatment Need (DHC-IOTN) for the identification of orthodontic treatment needs. The total of 131 study models was examined by an examiner (orthodontic specialist) for the determination of the DAI and DHC-IOTN. Thirty days later, further assessment was performed to determine the reproducibility. The duration of each exam was measured in seconds with a stopwatch. The indices were compared by a panel of three experts in orthodontics to evaluate validity. The intra-examiner reliability evaluation resulted in an intraclass correlation coefficient of 0.89 for the DAI (95% CI = 0.64 to 1.0) and 0.87 for the DHC-IOTN (95% CI = 0.56 to 0.96). The time spent on the evaluation of the DHC-IOTN was less than the time spent on that of the DAI (P < 0.001). The accuracy of the indices, as reflected by the area under the receiver-operating characteristic curve, was 61% for the DAI (95% CI = 51 to 70; p = 0.037) and 67% for the DHC-IOTN (95% CI = 58 to 77; p = 0.001). Both indices presented good reproducibility and validity.
Keywords: indexes; orthodontics; epidemiology
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Cardoso, C.F.; Drummond, A.F.; Lages, E.M.; Pretti, H.; Ferreira, E.F.; Abreu, M.H.N. The Dental Aesthetic Index and Dental Health Component of the Index of Orthodontic Treatment Need as Tools in Epidemiological Studies. Int. J. Environ. Res. Public Health 2011, 8, 3277-3286.
Cardoso CF, Drummond AF, Lages EM, Pretti H, Ferreira EF, Abreu MHN. The Dental Aesthetic Index and Dental Health Component of the Index of Orthodontic Treatment Need as Tools in Epidemiological Studies. International Journal of Environmental Research and Public Health. 2011; 8(8):3277-3286.
Cardoso, Chrystiane F.; Drummond, Alexandre F.; Lages, Elisabeth M.B.; Pretti, Henrique; Ferreira, Efigênia F.; Abreu, Mauro Henrique N.G. 2011. "The Dental Aesthetic Index and Dental Health Component of the Index of Orthodontic Treatment Need as Tools in Epidemiological Studies." Int. J. Environ. Res. Public Health 8, no. 8: 3277-3286.