Relationship Between Periodontitis and the Severity of Lung Infection Caused by COVID-19: A Case-Control Observational Study.

Background And Aims: The ongoing COVID-19 pandemic necessitates a deeper understanding of risk factors associated with severe outcomes. Chronic Periodontitis, a persistent inflammatory condition affecting the gums, may be linked to increased COVID-19 severity. This study aimed to determine the relationship between periodontitis and the severity of lung infection caused by COVID-19.