1. use of mouthwashes, in the last 24 hours 2. use of vitis pastes and / or perio aid gel, in the last 24 hours 3. four or more days of symptoms compatible with covid-19. 4. recent medical diagnosis (≤ 1 month) of pneumonia 5. cognitive impairment or other reason that, in the investigator's discretion, contraindicates participation in the study 6. hyposialia

1. use of mouthwashes, in the last 24 hours 2. use of vitis pastes and / or perio aid gel, in the last 24 hours 3. four or more days of symptoms compatible with covid-19. 4. recent medical diagnosis (≤ 1 month) of pneumonia 5. cognitive impairment or other reason that, in the investigator's discretion, contraindicates participation in the study 6. hyposialia

use of mouthwashes, in the last 24 hours use of vitis pastes and / or perio aid gel, in the last 24 hours four or more days of symptoms compatible with covid-19. recent medical diagnosis (≤ 1 month) of pneumonia cognitive impairment or other reason that, in the investigator's discretion, contraindicates participation in the study hyposialia

use of mouthwashes, in the last 24 hours use of vitis pastes and / or perio aid gel, in the last 24 hours four or more days of symptoms compatible with covid-19. recent medical diagnosis (≤ 1 month) of pneumonia cognitive impairment or other reason that, in the investigator's discretion, contraindicates participation in the study hyposialia

1. use of mouthwashes, in the last 24 hours 2. use of vitis pastes and / or perio aid gel, in the last 24 hours 3. four or more days of symptoms compatible with covid-19. 4. recent medical diagnosis (≤ 1 month) of pneumonia 5. cognitive impairment or other reason that, in the investigator's discretion, contraindicates participation in the study 6. hyposialia

1. use of mouthwashes, in the last 24 hours 2. use of vitis pastes and / or perio aid gel, in the last 24 hours 3. four or more days of symptoms compatible with covid-19. 4. recent medical diagnosis (≤ 1 month) of pneumonia 5. cognitive impairment or other reason that, in the investigator's discretion, contraindicates participation in the study 6. hyposialia