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5/29/2016 Influence of Functional Head Postures on the Dynamic Functional Occlusal Parameters

Ann Med Health Sci Res. 2014 Jul­Aug; 4(4): 562–566. PMCID: PMC4160681
doi: 10.4103/2141­9248.139319

Influence of Functional Head Postures on the Dynamic Functional Occlusal
Parameters

SB Haralur, SM Al­Gadhaan,1 AS Al­Qahtani,1 A Mossa,1 WA Al­Shehri,1 and MK Addas

Department of Prosthodontics, College of Dentistry, King Khalid University, Abha, Kingdom of Saudi­Arabia
1Department of Intern Dentist, College of Dentistry, King Khalid University, Abha, Kingdom of Saudi­Arabia
Address for correspondence: Dr. Satheesh B Haralur, Department of Prosthodontics, College of Dentistry, King Khalid University, Abha, Kingdom of
Saudi­Arabia. E­mail: hb_satheesh@yahoo.com

Copyright : © Annals of Medical and Health Sciences Research

This is an open­access article distributed under the terms of the Creative Commons Attribution­Noncommercial­Share Alike 3.0 Unported, which permits
unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract Go to:

Background:

The dentist utilizes supine position during therapeutic procedures, while the patients assumes extended head posture
during mastication. It is critical for the restorative dentist to evaluate and understand the possible effect of change in
head posture on occlusal contacts. An understanding of the possible effect will help in better restorative
rehabilitation.

Aim:

The aim of the following study is to evaluate the influence of head postures on the dynamic occlusal parameters.

Subjects and Methods:

Study group consisted of 50 students from College of Dentistry, King Khalid University. The students were
selected randomly from the college student body; they were in the age group of 18­25 years. The head posture
evaluated were supine position, upright sitting position and alert feeding position. The head postures were
standardized by goniometer and dynamic occlusal contacts were analyzed with Tscan. The data obtained was
subjected to statistical analysis with repeated measures of ANOVA to identify the changes in occlusal contacts.

Results:

The occlusion time was 1.366 (0.484), 1.226 (0.562) and 0.997 (0.429) s for supine, upright and alert feeding
position respectively. Disclusion time was for right lateral movement was 0.872 (0.372), 0.629 (0.290) and 0.831
(0.369) s for corresponding head postures. Left lateral disclusion time was 0.621 (0.274), 0.274 (0.345) s for
upright and alert feeding posture. Repeated measures of ANOVA showed statistically significant difference
between occlusal contacts in different head postures.

Conclusion:

Within the limitation of the study, it was concluded that there were significant changes in initial occlusal contact,
occlusion and disclusion time at all the head postures evaluated in the study.

Keywords: Occlusal parameters, Head postures, Restorative rehabilitation

http://www.st­va.ncbi.nlm.nih.gov/pmc/articles/PMC4160681/ 1/7