Correlation between use of different type protective facemasks and the oral ecosystem

BMC Public Health(2023)

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摘要
Abstract Background Spread worldwide through droplets, the Virus Sars-Cov-19 has caused a global health emergency alarm. In order to limit its spread, the use of masks has become part of the daily life of the entire population, however, little is known about its constant use and the changes generated in the oral cavity. This work aims to investigate correlations between the continuous use of masks covering the nose and mouth for 3 h and changes in the ecological factors of the oral cavity. Methods 34 volunteers were divided into 2 groups: wear only the filtering facepiece code 2 (FFP2) mask (Group A) and wear the FFP2 mask covered by a surgical mask (Group B). Measurement of Volatile Organic Compounds (VOCs), saliva rehydration and consistency test, collection of basal saliva and saliva stimulated with paraffin gum and mucosal swab were collected and analyzed at two times: before using the mask(s) (T 0 ) and 3 h after continuous use of the mask(s) (T 1 ). Results The results indicated a significant difference between the groups, in which the basal saliva volume and pH and the peaks of VOCs increased for group B between T 0 and T 1 . The rehydration time decreased and the volume and pH of the stimulated saliva increased, but with no significant difference between the groups. Furthermore, group B showed a significant decrease in Candida albicans Colony Forming Units (CFUs) and Total Bacterial Count (TBC) between T 0 and T 1 . Conclusion It is concluded that the prolonged use of the FFP2 mask covered by a surgical mask can generate oral alterations in the user.
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关键词
COVID-19,Face mask,FFP2 mask,Oral cavity,Oral ecosystem,PPE
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