Overbite depth indicator and anteroposterior dysplasia indicator cephalometric norms for African Americans

Abstract

Objectives: To examine normal Overbite Depth Indicator (ODI) and Anteroposterior Dysplasia Indicator (APDI) values in African Americans and to compare them with mean values from white patients. Secondary aims were to compare mean ODI and APDI values among different age, gender, and combined age-gender groups in African American patients. Materials and Methods: Lateral cephalometric radiographs of 160 African American patients (97 boys and 63 girls; age, 7 to 14 years) with normal occlusion and no history of orthodontic treatment were collected from the Bolton-Brush Growth Center. Cephalometric images were hand traced, and ODI and APDI values were assessed. Two-sample t tests were used to compare mean ODI and APDI values between African American and white patients; and between male and female African American patients. One-way analysis of variance, followed by the Tukey test, was used to compare mean ODI and APDI values among different African American age and combined age-gender groups. Results: Mean ODI and APDI values were significantly lower (P < .0001) in African American than white patients with normal occlusion and no history of orthodontic treatment. Mean ODI and APDI values increased with age in African American patients, and there were no significant gender differences. Conclusions: The mean ODI and APDI values in 7- to 14-year-old African Americans with normal occlusion and no history of orthodontic treatment were 70.9° and 78.1°, respectively, and were significantly lower than the mean values for white patients in the same age range.

Methods of cephalometric analysis according to Burstone C. J., Tweed C. H. and Kim Y. H.: opportunities, prospects and problems of use in Ukraine

“…It was found that African Americans have significantly lower ODI and APDI (70.9° and 78.1°, respectively) (p<0.0001) compared to the white population. In addition, no sex differences were found in the study groups [22].…”

New Sagittal and Vertical Cephalometric Analysis Methods: A Systematic Review

“…Since Broadbend’s and Hofrath’s introduction of the cephalometric analysis in 1931, many investigators have introduced further measurements and analyses to assess the skeletal or dentoalveolar basis of malocclusion [ 27 , 28 ]. A detailed cephalometric analysis is still an effective tool for the diagnosis and planning of orthodontic treatment.…”

Heredabilidad de los componentes de las medidas cefalométricas ODI, APDI y del Triángulo de McNamara en pacientes con maloclusión esquelética clase II y clase III, que asisten a la clínica odontológica de la Universidad Cooperativa de Colombia

“…Se ha demostrado que medidas como ODI y APDI presentan un alto valor diagnóstico al establecer un vínculo entre la inclinación del plano oclusal y la discrepancia esquelética sagital y vertical. Es por esta razón que se utilizaron para clasificar a los pacientes del presente estudio (13,14,(19)(20)(21).…”