In late December 2019, the new pandemic caused by the SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) infection began to spread around the world. The new situation gave rise to severe health threats, economic uncertainty, and social isolation, causing potential deleterious effects on people's physical and mental health. These effects can influence oral and maxillofacial conditions, such as temporomandibular disorders (TMD) and bruxism, which could further aggravate the orofacial pain.
The International Association for the Study of Pain (IASP) reported that TMD-related facial pain occurs in 9–13% of the general population, while only 4–7% seek treatment. The TMD-related pain may also affect the daily activities, physical and psychosocial functioning, and quality of life of the affected individuals. While, on the other hand, bruxism can act as a potential risk factor for several negative consequences of health such as masticatory muscle pain, oral mucosa damage, mechanical tooth wear, and failures of prosthodontic constructions.
Both the conditions were found to elevate the orofacial pain, hence, cross-sectional online surveys using similar anonymous questionnaires were circulated during the lockdown in both countries. The authors obtained 700 complete responses from Israel and 1092 from Poland. In the first step, data concerning TMDs and bruxism were compared between the two countries. In the second step, univariate analyses (Chi2) were performed to investigate the effects of anxiety, depression, and personal concerns of the Coronavirus pandemic, on the symptoms of TMD, and bruxism symptoms and their possible aggravation. Finally, multivariate analyses (logistic regression models) were carried out to identify the study variables that had a predictive value on TMD, bruxism, and symptom aggravation in the two countries.
The authors observed that the Coronavirus pandemic has caused significant adverse effects on the psychoemotional status of both Israeli and Polish populations, resulting in the intensification of their bruxism and TMD symptoms.
Therefore, they concluded that "the coronavirus pandemic has caused significant adverse effects on the psychoemotional status of both Israeli and Polish populations, resulting in the intensification of their bruxism and TMD symptoms and thus leading to increased orofacial pain."
However, further longitudinal studies are needed to evaluate the pandemic's possible long-term mental and physical consequences. Multifactorial and multicultural research should be performed to identify the risk groups and counteract the aggravation of emotional and physical effects in the case of future global crises, they added.
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