Correlation of various cephalometric parameters for the assessment of sagittal relationship between maxilla and mandible in North Indian population: A cephalometric study

Aims: The study was aimed to check the correlation of Yen angle with other sagittal discrepancy parameters and to obtain a more reliable and least variable parameter for antero-posterior cephalometric analysis. Methods and Material: The lateral cephalograms of 450 North Indian subjects were obtained and traced for five different sagittal discrepancy parameters. The age of subjects ranged from 18-30 years. Statistical analysis: ANOVA analysis, t-test and correlation coefficient analysis were done. Results: Mean values of YEN angle, W angle, BETA angle, ANB angle and WITS appraisal were found to be 120.63±5.55, 53.13±4.21, 27.83±4.97 and 3.07±2.79 respectively. The ANOVA analysis revealed highly significant differences among the means of all the three groups (Group I, II & III). Pearson’s correlation coefficient test revealed that YEN angle was correlated with W and BETA angles. Conclusions: Study revealed that, YEN angle was highly reliable (CV= 4.6) and most homogenously distributed parameter to assess antero-posterior sagittal discrepancy among North Indian population. In addition it could significantly differentiate among the three groups and was highly correlated to W and BETA angle.