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British Journal of Medicine and Medical Research, ISSN: 2231-0614,Vol.: 20, Issue.: 12

Original-research-article

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.

Article Information
Editor(s):
(1) Panagiotis Korovessis, Chief Orthopaedic Surgeon, Orthopaedic Department, General Hospital “Agios Andreas” Patras, Greece.
Reviewers:
(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

Abstracts

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.

Keywords :

Upper airway; lower airway; Class I; Class II; vertical growers; horizontal growers.

Full Article - PDF    Page 1-10

DOI : 10.9734/BJMMR/2017/31287

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