Year : 2018

Volume : Volume 9

Issue : Issue 1

Address for correspondence :
Dr. Nikhil Devasia.
NikhilDevasia@gmail.com

Abstract

ackground:  A cephalometric radiograph in diagnosis and treatment planning is an essential tool in orthodontics to assist research workers and orthodontic clinicians. This specific innovative cephalometric analysis (COGS Analysis) was introduced because ‘a need had arisen for a method of cephalometric analysis that is sensitive not only to the position of teeth within a given bone, but also to the relationship of jaw elements and makes it most suitable for diagnosis, treatment planning and treatment evaluation, not only of conventional orthodontic patients, but also for patients with skeletal discrepancies who are candidates for dento-facial orthopaedics and orthognathic surgery. This study was carried out to establish cephalometric norms of COGS analysis for Kerala population. Materials & Methods: 100 Kerala adults (50 males and 50 females) were taken with an age group between 1825 years having class I molar relationship on both sides with minimal or no crowding, spacing, normal growth pattern and no history of orthodontic treatment /orthognathic surgery. Lateral cephalograms in occlusion were taken with natural head position and no lip strain. The head films were traced and analysed, landmarks and cephalometric parameters used in COGS analysis were followed. It has shown significant difference in effective maxillary length and ramal length in males of Kerala population.  Our study findings were similar to COGS norms. Conclusion: Despite increased effective maxillary length and ramal length in Kerala population, rest all the parameters are similar to Caucasian standards. COGS analysis can be applied for Kerala population.

Keywords: Lateral cephalogram, cephalometric norms, COGS analysis, Kerala population.