Evaluating Orthodontic Treatment Needs with Two Indices
Author Information
Author(s): Chrystiane F. Cardoso, Alexandre F. Drummond, Elisabeth M.B. Lages, Henrique Pretti, Efigênia F. Ferreira, Mauro Henrique N.G. Abreu
Primary Institution: Universidade Federal de Minas Gerais
Hypothesis
The study aims to assess the validity and reproducibility of the Dental Aesthetic Index (DAI) and the Dental Health Component of the Index of Orthodontic Treatment Need (DHC-IOTN) for identifying orthodontic treatment needs.
Conclusion
Both the DAI and DHC-IOTN are reproducible and have reasonable accuracy, but they exhibit a high false positive rate compared to the gold standard.
Supporting Evidence
- The DAI and DHC-IOTN showed good reproducibility with intraclass correlation coefficients of 0.89 and 0.87, respectively.
- The accuracy of the DAI was 61% and the DHC-IOTN was 67%, indicating moderate effectiveness in identifying treatment needs.
- The time taken to assess the DHC-IOTN was significantly less than that for the DAI.
Takeaway
The study looked at two ways to check if kids need braces, and found that both methods work well but sometimes say kids need braces when they really don't.
Methodology
The study involved examining 131 dental models using the DAI and DHC-IOTN indices, with assessments repeated after 30 days to evaluate reproducibility.
Potential Biases
The reliance on a small panel of orthodontists as the gold standard may introduce bias in treatment need assessments.
Limitations
The study was conducted with a small group of Brazilian orthodontists and is representative of a single orthodontics service.
Participant Demographics
Participants were aged 12 to 15 years, representing early permanent dentition.
Statistical Information
P-Value
0.001
Confidence Interval
95% CI = 0.64 to 1.0
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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