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AmJCaseRep

Psychosocial stress influence on parafunction and oromandibular dysfunction (OMD) prevalence among adolescents

Łukasz Pawlak, Bartosz Suliborski, Monika Sajewicz- Rosiak, Katarzyna Romańczuk, Wojciech Split

Med Sci Tech 2008; 49(3): RA179-183

ID: 881615

Available online:

Published: 2008-03-21


Introduction: Parafunctions of masticatory system belong to subconscious supplementary motorial activities. Psychosocial stress seems to play the most probable cause of parafunction prevalence. The aim of the study is to estimate the role of psychosocial stress on parafunction and OMD prevalence among adolescents. A total of 39 students with OMD (421 girls and 218 boys) aged 13-19 participated in the study. The control group consisted of 1240 age-matched OMD-free students. Methods: Methods of investigations were based on the clinical examination and survey. Stress influence was established according to the PSS-10 Cohen psychological Scale of Perceived Stress. Results were statistically analyzed with chi2 and Mann-Whitney independence tests and ANOVA analysis. Results: Teeth grinding students revealed average stress index value of 39.6 (SD 16.5), teeth clenching students 35.9 (SD 16.3), lip biting students 32.0 (SD 16.8), object biting students 31.2 (SD 16.0) and nail biting students 30.0 (SD 15.6). Average stress index value increased with students’ age, i.e grinding teeth students aged 13 revealed value of 25.1 comparing to 56.2 among students aged 19. Average stress index among students with single parafunction was 21.8, 32.1 for students with 3 parafunctions and 44.1 for students with 6 active parafunctional habits. Average stress index among students with OMD was 31.4 (SD 16.0), 33.1 (SD-16,7) for girls and 28.2 (SD-15,0) for boys. Average stress index among OMD-free students was 14.3 (SD-10.5). Conclusions: Students with parafunctional habits reveal increased susceptibility to stress dependant on gender, age, type and number of parafunctions. All parafunctions influence OMD prevalence. (Clin Exp Med Lett 2008; 49(3): 179-183)

Keywords: bruxism, parafunctional habits, psychosocial stress, oromandibular dysfunction, adolescents



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