Association of the quantitative oral health status of patients with COVID-19 with their organ status and immunity: A single-centre observational study.

Objectives: To evaluate the prevalence of oral complications in patients with severe COVID-19; investigate the association between their oral health, organ status, and immunity; and determine whether the resazurin disc test is an effective substitute for the Oral Assessment Guide.

Research Methodology/design: A single-centre observational study.

Setting: Intensive care unit with restricted access specialising in extracorporeal membrane oxygenation for COVID-19 treatment.