Comparison of Different Angular Measurements to Assess Sagittal Skeletal Discrepancy - A Cephalometric Study

Introduction: - An accurate evaluation of sagittal jaw relationship is important in orthodontic diagnosis and treatment planning. Numerous angular and linear measurements have been incorporated to assess the antero-posterior jaw discrepancy between maxilla and mandible so as to reach the correct diagnosis. So the purpose of this study is to compare ANB angle, Wits appraisal, Beta angle, YEN angle and W-angle used to measure antero-posterior dysplasia and to find out which is the most reliable amongst them. Material and Method: - Sample comprised of 45 pre-treatment lateral cephalograms which were divided into 3 groups: Group I-Class I skeletal pattern (n=15), Group II- Class II skeletal pattern (n=15) and Group III - Class III skeletal pattern (n=15) Results: - ANOVA analysis was performed and highly significant differences were found in Beta angle, Yen angle and W-angle in all the three Groups (Group I, Group II, and Group III). Conclusion: - Thus it has been concluded from the study that Beta angle, Yen angle and W-angle are significant angles to assess the sagittal jaw relationship between maxilla and mandible.