Abstract
Background: The mouth plays a crucial role as an entry point for the SARS-CoV-2 virus. The new coronavirus has been identified in saliva, and its viral load has been linked to the severity of COVID-19.Types of studies reviewed: This study was designed as a narrative review. Medline, Scopus and Google Scholar were searched up to January 2021 for articles in English that addressed the role played by the oral cavity and saliva in the coronavirus disease, with particular focus on viral presence in the oral cavity. All relevant scientific articles were included.Results: Hyposalivation can increase the risk for respiratory infections and COVID-19. Oral lesions are rare in COVID-19 patients, with reports of sialadenitis, mucositis, geographic tongue, burning mouth, necrotizing gingivitis and viral enanthema. Transient loss of taste and smell are highly prevalent symptoms, likely related to neurological changes.Practical implications: Given the importance of the oral cavity and saliva in the development and transmission of the coronavirus disease, as health care professionals, dentists have a crucial role to play during the pandemic.
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