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Temporomandibular disorders and associated comorbidities among brazilian dental students during COVID-19


Temporomandibular joint disorders

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Silva FT da, Knorst JK, Maracci LM, Ferrazzo VA, Liedke GS, Silva TB, Marquezan M. Temporomandibular disorders and associated comorbidities among brazilian dental students during COVID-19. Braz. J. Oral Sci. [Internet]. 2022 Dec. 19 [cited 2023 Sep. 26];22(00):e237397. Available from:


Aim: This study aimed to assess the prevalence of temporomandibular disorders (TMD) and psychosocial comorbidities in undergraduate dental students in a southern Brazilian university, during the COVID-19 pandemic. Also, it aimed to verify the association between psychosocial factors and TMD. Methods: Fonseca Anamnestic Index, Depression Anxiety Stress Scale (DASS-21), a socioeconomic questionnaire, and questions about academic performance and social distancing were applied. Poisson regression analysis was used to assess the association of predictive variables with TMD. Results: The prevalence of TMD was found to be 82.4%, and more than half of the students had some degree of stress, anxiety, and depression. Students who had symptoms of stress (RR 1.11; 95% CI 1.04-1.19), anxiety (RR 1.19; 95% CI 1.12-1.27) and reported academic performance worsening (RR 1.12; 95% CI 1.07-1.19) had higher TMD scores. Conclusion: The findings suggest that TMD was highly prevalent among dental students at a federal university in southern Brazil during the pandemic, being associated with high levels of stress, anxiety, poor academic performance, and greater social distancing.


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Copyright (c) 2022 Francyéllen Teixeira da Silva, Jessica Klöckner Knorst, Lucas Machado Maracci, Vilmar Antônio Ferrazzo, Gabriela Salatino Liedke, Tatiana Bernardon Silva, Mariana Marquezan


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