Background: To evaluate the uvulo-glosso-pharyngeal dimensions and to evaluate and compare sexual dimorphism in uvulo-glosso-pharyngeal dimensions in different sagittal skeletal patterns. Methods and Material: Pre-treatment lateral cephalometric radiographs of 120 subjects between 14 to 25 years of age were taken as sample for this study. All the subjects were divided into three groups according to ANB and Beta angle. Each group had 30 subjects (15 males and 15 females). various parameters for uvulo-glosso-pharyngeal dimensions were traced manually. Statistical analysis used: Mean, Standard deviation, Standard error, P-value, One Way ANOVA and Fisher's Least Significant Difference (LSD) Test. Results: Statistically highly significant difference was observed between the four groups for vertical airway length. Vertical airway length is significantly smaller in skeletal Class II group. Conclusions: Vertical airway length (VAL) is significantly reduced in skeletal Class II subjects as compared to skeletal Class I and Class III subjects. Sexual dimorphism does not exist for airway parameters.
