British Journal of Medicine and Medical Research, ISSN: 2231-0614,Vol.: 20, Issue.: 12
A Cephalometric Evaluation of Airway Space in Skeletal Class II Subjects
Shreya S. Iyengar1*, B. S. Chandrashekar1, P. C. Ramesh Kumar1, Vinay P. Reddy1, C. M. Mahesh1, Balamohan Shetty1 and Abhishek Sundara1 1Department of Orthodontics and Dentofacial Orthopaedics, Krishnadevaraya College of Dental Sciences, Bangalore, Karnataka, India.
Shreya S. Iyengar1*, B. S. Chandrashekar1, P. C. Ramesh Kumar1, Vinay P. Reddy1, C. M. Mahesh1, Balamohan Shetty1 and Abhishek Sundara1
1Department of Orthodontics and Dentofacial Orthopaedics, Krishnadevaraya College of Dental Sciences, Bangalore, Karnataka, India.
(1) Panagiotis Korovessis, Chief Orthopaedic Surgeon, Orthopaedic Department, General Hospital “Agios Andreas” Patras, Greece.
(1) Takahiro Kanno, Shimane University, Japan.
(2) Tarulatha R. Shyagali, MP University of Medical Sciences, India.
(3) Murat Tozlu, Yeditepe University, Turkey.
Complete Peer review History: http://www.sciencedomain.org/review-history/18737
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.
Upper airway; lower airway; Class I; Class II; vertical growers; horizontal growers.
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DOI : 10.9734/BJMMR/2017/31287Review History Comments