Predictability Of ANB, Beta And YEN Angles As Antero-Posterior Dysplasia Indicators In North Indian Population
Objective: The purpose of this study was to assess the predictability of ANB, Beta and YEN angle as antero-posterior dysplasia indicators in cases of skeletal Class II malocclusions in North Indian population.
Methods: 72 samples of lateral cephalograms were obtained from preexisting records form the Department of Orthodontics, Faculty of Dental Sciences, Rama University, Uttar Pradesh. The lateral cephalograms were of pretreatment skeletal Class II patients which were selected on the basis of Down’s facial angle (<82°). The parameters were evaluated and the correlations as well as the variations between them were assessed.
Results: The correlations between ANB, Beta and YEN angles were found to be statistically significant, but only the correlation between ANB and YEN angle was found to be strong. Variations among these parameters exhibited YEN angle as the parameter with the least variation as compared to the ANB and Beta angle.
Conclusion: The YEN angle was found to be the most promising and reliable cephalometric parameter in the prediction of sagittal dysplasia, followed by the Beta angle and then the ANB angle.