ABSTRACT
OBJECTIVES: The aim of this article is to detect whether oral lesions affect the tongue mainly due to higher cells expressing angiotensin-converting enzyme 2 (ACE2) than in other oral sites in COVID-19 patients. Moreover, the etiology of oral lesions was evaluated either resulting from SARS-CoV-2 sequelae or from adverse effects of drugs used for COVID-19 treatment. MATERIALS AND METHODS: One hundred and twenty-four patients were admitted to the study. All patients' data were obtained including age and gender, laboratory testing, drug administration, respiratory and systemic conditions, signs and symptoms, and oral manifestations. RESULTS: Oral manifestations were seen in 112 (90.3%) of all patients. Oral ulcers represented the most prevalent lesions in the oral cavity in 104 patients (92.8%). Lip, tongue, and labial mucosa showed the most common sites for oral ulcers. Most of oral lesions were displayed in the tongue in 96 patients (85.7%). Various medications were used in the treatment of patients. CONCLUSION: The tongue represented the most common site of oral lesions in COVID-19 patients followed by the labial mucosa. No correlation was found between the oral lesions and the drugs used for the treatment of SARS-CoV-2 infection. The systemic health and the severity of the disease were not related to the spread of the oral lesions.