Hyposalivation and/or dry mouth have been regarded   as an oral symptom of COVID-19 in addition to taste changes, difficulty in swallowing, and burning mouth sensation. As the oral cavity considered the main route of infection, several published reports had given special attention to it.

The aim of this observational study was to evaluate the salivary flow rate of patients with previous COVID-19 infection.

A group of 35 patients met the inclusion criteria. A questionnaire of 16 questions regarding the oral and systemic health conditions was administered to these patients

observational study of 28 female & 7 males. Hyposalivation was appeared in 63% of cases (22 respondents) from total 35 respondents [19 females & 3 males]. Other oral symptoms that included in the questionnaire (that appear during active COVID-19 infection): Taste changes appear in 68%, burning mouth 8.5%, difficulty in swallowing 20%. While smell changes appear in 65.7% with different duration & severity of the disease. The study group was divided into two groups according to response of salivary flow rate (normal salivary flow rate ≥ 1.5, abnormal salivary flow rate < 1.5). A statistical difference in salivary flow rate P=0.001, duration of disease p=0.05, severity of the disease p=0.05, duration of the disease p=0.001 between normal & abnormal groups.

hyposalivation appeared in COVID-19 patients; this may persist even though after resolution of the disease, so these patients need supportive treatment to overcome oral complication.

Key words: Hyposalivation, COVID-19, Persistent symptoms. Patients, Clinical study