Changes in the Oral Cavity Mucosal Surface under the Influence of Wearing Protective Face Masks-Nitric Oxide Concentration Analysis-Preliminary Report

Orders to cover the mouth and nose were introduced as a prophylaxis for COVID-19. The use of face masks, apart from their benefits, has some side effects. It can affect, among other things, the oral cavity mucosa, manifested by its dryness, and can increase the amount of inflammatory markers, for example, nitric oxide (NO). The aim of this research was to determine changes in the oral cavity mucosal surface under the influence of the use of protective face masks based on an innovative measurement of NO levels in the exhaled air of healthcare workers. The people taking part in this study were dental assistants and recorders who used masks during work. The first measurement of NO was carried out before starting work and putting on a mask, and the second measurement was carried out after work. Based on the research, a statistically significant difference was shown in the NO values before putting on a mask and immediately after removing it. Despite the advantages of wearing protective masks, studies have shown that their long-term use has an impact on the oral cavity mucosa, which is reflected in the higher level of NO in exhaled air.