Abstract
Introduction: Sagittal discrepancies are more commonly encountered in day to day practice. Angular and linear measurements have been incorporated into various cephalometric analyses to help the clinician for diagnosing this anteroposterior discrepancy. The purpose of the study was to assess sagittal skeletal discrepancy with Beta angle and to compare and correlate the Beta angle with angular measurements—ANB angle, AFB angle and with linear measurements –AO-BO, AF-BF and App-Bpp. Materials and methods: Pretreatment lateral cephalograms of 100 young adults (50 men and 50 women) were divided into skeletal Class I, II and III. The data was subjected to statistical analysis using the statistical software namely SPSS 11.0 and Systat 8.0. Results: The results of the present study showed that the mean Beta angle is 32.54 ± 0.86. Significant negative correlation exists between Beta angle with other angular measurements (ANB angle, AFB angle) and with linear measurements (AO-BO, AF-BF and App-Bpp). Sex difference was statistically insignificant. Conclusion: Increase and decrease of Beta angle from normal demonstrate skeletal Class III and Class II discrepancy respectively. There was negative correlation between Beta angle and other linear and angular measurements for assessing sagittal skeletal discrepancy.
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