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International Journal of Dentistry
Volume 2016, Article ID 4327081, 9 pages
Research Article

Association between Self-Reported Bruxism and Sleeping Patterns among Dental Students in Saudi Arabia: A Cross-Sectional Study

1Oral Radiology Department, Cairo University, Cairo, Egypt
2Riyadh Colleges of Dentistry and Pharmacy, Riyadh, Saudi Arabia
3Anatomy and Embryology Department, Benha University, Egypt
4Biostatistics Department, King Saud University, Riyadh, Saudi Arabia

Received 10 October 2015; Revised 13 December 2015; Accepted 31 January 2016

Academic Editor: Claudio Rodrigues Leles

Copyright © 2016 Shereen M. Shokry et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objectives. The aim of this cross-sectional study was to identify sleeping patterns among dental students and their association with self-reported bruxism in Riyadh Colleges of Dentistry and Pharmacy (RCsDP). Methods. A cross-sectional study was performed including 549 students (67 men and 482 women). A structured questionnaire was adopted from The PSQI (The Pittsburgh Sleep Questionnaire Index) used for data collection. It included questions which are categorized into sleeping habits, sleep-related symptoms, and additional questions concerning bruxism. This questionnaire was randomly distributed among all college preclinical and postclinical students. Sleep bruxism diagnosis was based on self-reported data. The data were analyzed using Chi-square tests through SPSS software for Windows. Results. Statistical analyses revealed significant correlations between self-reported bruxism and sleeping habits including sleep initiation (, ), continuous sleep until morning (, ), nighttime sleep duration (, ), and length of daytime naps (, ). There was an association between self-reported bruxism and sleeping-related symptoms including awakening early in the morning before the usual time without a cause (, ) and increased nightmares (, ). Conclusions. Poor sleeping pattern was an important factor among dental students, who reported sleep bruxism.