A Cephalometric Evaluation of Airway Space in Skeletal Class II Subjects
Journal Title: Journal of Advances in Medicine and Medical Research - Year 2017, Vol 20, Issue 12
Abstract
Aims and Objectives: To study the correlation of 1. pharyngeal airway space and skeletal class I and II malocclusions and 2. pharyngeal airway space and growth pattern using lateral cephalograms Materials and Methods: 60 pre-treatment lateral cephalograms of untreated skeletal class I and class II patients were traced using 0.003 inch matte acetate sheets. The subjects were divided into skeletal class I (ANB 0º-4º) and class II (ANB >4º) based on ANB angles. Each group was further divided into three sub groups based on mandibular plane angle. (SN-GoGn <26º-low angle, SN-GoGn 26º-38º-normal angle and SN-GoGn >38º-high angle). Results: Nasopharyngeal airway space decreased from low angle to normal to high angle. The upper airway was wider in Class II subjects with low, normal or vertical growth than in Class I subjects with low, normal or vertical growth. The lower pharyngeal airway did not have any correlation with the type of malocclusion or the growth pattern. Conclusion: Thus, it can be concluded that malocclusion type (skeletal Class I or Class II) as well as growth pattern (normal, horizontal and vertical) influence upper pharyngeal airway width, and both do not influence the lower pharyngeal airway width.
Authors and Affiliations
Shreya S. Iyengar, B. S. Chandrashekar, P. C. Ramesh Kumar, Vinay P. Reddy, C. M. Mahesh, Balamohan Shetty, Abhishek Sundara
Keywords
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- EP ID EP311508
- DOI 10.9734/BJMMR/2017/31287
- Views 43
- Downloads 0
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