Gonial Angle as an Indicator for the Prediction of Growth Pattern

Aim: To determine the gonial angle, upper gonial angle and lower gonial angle in patients with horizontal, vertical and average growth pattern belonging to the local Chennai popu lation and determine if it can be used as a growth indicator. Materials and methods: Gonial angle, upper gonial angle and lower gonial angle measurements were made on lateral cephalograms of 90 patients—44 males and 46 females. Results: A one sample t-test was used to determine the mean values for average, horizontal and vertical growth pattern and to check their level of significance. All the values were statistically significant with a p-value = 0.000. Conclusion: The upper gonial angle was the same irrespective of growth pattern. The gonial angle and lower gonial angle can be used as an indicator for growth.