Predictability of MKG & Tau angle and their correlation with ANB angle, W angle, Yen angle, Beta angle, and WIT’S appraisal in Central Indian Population

For orthodontic diagnosis and treatment planning there are various ways to assess the jaw discrepencies. Using various parameters such as ANB, Wit’s appraisal, Beta, Yen, and W angles, with some limitations. To overcome these, MKG angle and Tau angle were proposed. Aim and objective: The present study assesses the predictability of MKG and Tau angle and its correlation with previous parameter. Materials and methods: A total of 105 lateral cephalograms were selected. Samples were divided into, Class I, Class II and Class III based on ANB angle. WITS appraisal, Beta angle, Yen angle, W angle, MKG angle and Tau angle were also measured. Kruskal-wallis test, followed by post hoc tuckey analysis and correlation coefficient analysis were done to assess the significance of association between these parameters. Results: Tau angle and Beta angle were noted to be most predictable for differentiating Class I, Class II and Class III, MKG angle was found to be less predictable for differentiating samples. Conclusion: Tau angle can be used along with ANB and Beta angle for assessing sagittal jaw relationship.