Efficiency of ODI and APDI of Kim's cephalometric analysis in a Latin American population with skeletal open bite.

Paola Janett Caballero-Purizaga,Luis Ernesto Arriola-Guillén,Gustavo Adolfo Watanabe-Kanno

doi:10.1590/2177-6709.24.3.046-054.oar

Paola Janett Caballero-Purizaga, Luis Ernesto Arriola-Guillén + Show 1 more

Open Access

https://doi.org/10.1590/2177-6709.24.3.046-054.oar

Copy DOI

Abstract

ABSTRACTObjective: The objective of this research was to demonstrate the efficiency of the overbite depth indicator (ODI) and the anteroposterior dysplasia indicator (APDI) from Kim’s cephalometric analysis, regarding the determination of the vertical and sagittal patterns of Latin American individuals. Methods: Two hundred lateral cephalometric radiographs were selected and divided into four study groups, with 50 radiographs each, for carrying out a cross-sectional study. The control group included radiographs of balanced individuals, and the other three groups had lateral cephalometric radiographs of subjects with Class I, II and III malocclusions and with skeletal open bite. After the pilot test was performed to calibrate the investigator, the ODI and APDI were measured. Descriptive statistics were performed and the one-way ANOVA with post-hoc Tukey HSD, or Kruskal-Wallis and Mann-Whitney U-test were used. Also a multiple linear regression was employed.Results: Statistically significant differences were found for the ODI of all groups (p< 0.001), except between Class I group (65.87 ± 4.26) and Class II open bite group (67.19 ± 3.58), both with similar values to each other. For APDI, statistically significant differences were also found for all groups (p< 0.001). However, no statistically significant differences were found between the balanced group (83.18 ± 1.71) and Class I group with skeletal open bite (81.78 ± 2.69). Conclusions: ODI and APDI are reliable indicators to evaluate the sagittal and vertical patterns of an individual, demonstrating their efficiency when a Latin American population was evaluated.

Highlights

An open bite has been considered as the upper, lower, anterior or posterior lack of teeth contact at the moment of occlusal closure
The mean value and standard deviation obtained for the overbite depth indicator (ODI) of the balanced group (72.10 ± 4.84) were higher than those obtained for the Class I (65.87 ± 4.26), Class II (67.19 ± 3.58) and Class III (60.29 ± 5.23) skeletal open bite groups
Similar valueswere obtained for the anteroposterior dysplasia indicator (APDI) of the balanced group (83.18 ± 1.71) and the Class I group with skeletal open bite (81.78 ± 2.69)

Summary

Introduction

An open bite has been considered as the upper, lower, anterior or posterior lack of teeth contact at the moment of occlusal closure. From an etiological point of view, an open bite can be classified as dental or skeletal The latter is characterized by an excessive vertical dentoalveolar development on the posterior regions of the dental arches, generating an anteroinferior facial height increase and hyperdivergent maxillaries. This vertical growth can have influence on the treatment complexity and on the high frequency of relapses.[1]. Kim, who emphasizes the determination of vertical and sagittal growth patterns using the overbite depth indicator (ODI) and the anteroposterior dysplasia indicator (APDI) These indicators offer very important values in relation to the orthodontic treatment planning, mainly when deciding to perform a surgical orthodontic treatment.[4,5,6,7]

Methods

Results

Conclusion