Airway in Class I and Class II skeletal pattern: A computed tomography study
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Updated: Apr 4, 2026
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Published on: September 28, 2022
Deepthi Paul1, Sapna Varma1, V V Ajith1
1Department of Orthodontics and Dentofacial Orthopedics, Amrita School of Dentistry, Amrita Institute of Medical Sciences, Cochin, Kerala, India.
Background And Objectives:
A normal airway is required for the normal growth of the craniofacial structures. The present study was designed to evaluate and compare the airway in Class I and Class II skeletal pattern and to see if there is any association between the airway and maxillomandibular relationship.
Materials And Methods:
Peripheral nervous system computed tomography scans of 30 patients were divided into two groups as Class I (ANB ≤ 4.5°), Class II (ANB ≥ 4.5°). The Dolphin three-dimensional version 11 was used to assess the airway.
Statistical Analysis:
Correlations between the variables were tested with the Pearson correlation coefficient. Independent sample t-test was performed to compare the averages between the two groups. P < 0.05 was considered as statistically significant.
Results:
The ANB angle was negatively correlated with all the airway parameters. The airway area and volume was significantly reduced in Class II subjects compared to Class I.
Conclusion:
The results suggest a strong association between the airway and skeletal pattern showing a reduced airway in Class II patients with a high ANB angle.
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