Comparison of different angular measurements to assess sagittal Jaw discrepancy in Jaipur population- A cephelometric study

Abstract

Introduction: In orthodontic diagnosis and treatment planning an accurate evaluation of sagittal jaw relationship is important. To assess the antero-posterior jaw discrepancy between maxilla and mandible, numerous angular and linear measurements have been in corporate so as to reach correct diagnosis. So the purpose of this study is to compare ANB angle, Wits appraisal, Beta angle and W angle used to measure anteroposterior dysplasia and to find out which is the most reliable amongst them. Material and method: Sample comprised of 30 pre-treatment lateral Cephalogram which were divided into three groups: Group I-Class I skeletal pattern (n=10), Group II- Class II skeletal pattern (n=10) and Group III - Class III skeletal pattern (n=10) Results: - ANOVA analysis was performed and highly significant differences were found in ANB, Wits Appraisal Beta angle and W-angle in all the three Groups (Group I, Group II, and Group III). Conclusion: - it has been concluded that similar to the ANB and Wits Appraisal the Beta angle, and W-angle are also significant angles to assess the sagittal jaw relationship between maxilla and mandible. Key Words-Sagittal Discrepancy, Beta Angle, ANB Angle, Wits Appraisal and W-Angle