%0 Journal Article
	%A Sanath Kumar Shetty and  Sanya Sinha and  K. Kamalakanth Shenoy
	%D 2015
	%J International Journal of Medical and Health Sciences
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 103, 2015
	%T Relevance of the Variation in the Angulation of Palatal Throat Form to the Orientation of the Occlusal Plane: A Cephalometric Study
	%U https://publications.waset.org/pdf/10001515
	%V 103
	%X The posterior reference for the ala tragal line is a
cause of confusion, with different authors suggesting different
locations as to the superior, middle or inferior part of the tragus. This
study was conducted on 200 subjects to evaluate if any correlation
exists between the variation of angulation of palatal throat form and
the relative parallelism of occlusal plane to ala-tragal line at different
tragal levels. A custom made Occlusal Plane Analyzer was used to
check the parallelism between the ala-tragal line and occlusal plane.
A lateral cephalogram was shot for each subject to measure the
angulation of the palatal throat form. Fisher’s exact test was used to
evaluate the correlation between the angulation of the palatal throat
form and the relative parallelism of occlusal plane to the ala tragal
line. Also, a classification was formulated for the palatal throat form,
based on confidence interval. From the results of the study, the
inferior part, middle part and superior part of the tragus were seen as
the reference points in 49.5%, 32% and 18.5% of the subjects
respectively. Class I palatal throat form (41degree-50 degree), Class
II palatal throat form (below 41 degree) and Class III palatal throat
form (above 50 degree) were seen in 42%, 43% and 15% of the
subjects respectively. It was also concluded that there is no
significant correlation between the variation in the angulations of the
palatal throat form and the relative parallelism of occlusal plane to
the ala-tragal line.
	%P 536 - 540