Toothbrush Disinfection Could Defend Towards COVID-19


SARS-CoV-2 will be transmitted, even from asymptomatic people, in numerous methods, together with droplets, aerosols and, to a lesser diploma, fomites.

Now, Brazilian researchers have evaluated using these merchandise in a toothbrush disinfection protocol, they report in an article published online in The Journal of Infectious Illnesses.

As highlighted by the authors within the textual content, revealed as a Letter to the Editor, people contaminated with SARS-CoV-2 have “excessive viral hundreds in saliva, nasopharynx and oropharynx,” which may happen even in asymptomatic individuals.

Contemplating that toothbrushes can act as reservoirs for microorganisms and favor the transmission of illnesses similar to COVID-19, the authors estimate that disinfecting the brushes could be necessary to regulate the transmission of the virus in shared areas.

A recent study demonstrated that commercially out there mouthwashes can inactivate SARS-CoV-2 in vitro. The outcomes confirmed that antiseptic options containing ethanol and important oils — exemplified by the model Listerine Cool Mint, to call one — had passable results in decreasing viral load.

Nevertheless, there are nonetheless no particular research evaluating the effectiveness of various mouthwash options within the disinfection of toothbrushes, nor randomized trials exhibiting that using such options would, in medical observe, have a protecting function towards the transmission of COVID-19.

Disinfection Protocol

As proposed by the authors after a overview of the out there knowledge on the topic, the disinfection of toothbrushes ought to observe the next steps:

  • Wash your palms with cleaning soap and water or sanitize them with 70% alcohol

  • Disinfect the toothbrush deal with floor with 70% alcohol for 1 minute

  • Brush your enamel

  • Wash the comb and carry out a brand new disinfection of its deal with floor with 70% alcohol for 1 minute

  • Depart the brushhead immersed in an answer with ethanol and important oils for 20 minutes

  • Retailer the comb individually after letting it dry

In line with the authors, the steps for disinfecting the toothbrush with 70% alcohol are necessary when brushing in collective environments, similar to in faculties or within the office, and do not should be carried out within the family atmosphere, if not desired.

One other necessary commentary made by the authors: brushes utilized by people identified to be constructive for SARS-CoV-2 needs to be discarded instantly after use. The in vitro research reviewed for the elaboration of the protocol confirmed it was potential to watch a passable discount in viral load with solely 30 seconds of publicity to the examined answer. Nevertheless, you will need to think about that the toothbrush has retentive niches of microorganisms due to its design — therefore the advice for immersion for an extended time.

Extra Research Wanted

“Toothbrushes play an important function in oral hygiene, however they will additionally act as reservoirs for microorganisms, favoring the transmission of illnesses in wholesome and sick people,” the authors write.

Though the in vitro efficacy of the ethanol and important oils answer — in addition to that of other options similar to povidone-iodine — has been demonstrated in multiple research, extra analysis continues to be wanted.

“[R]andomized  medical  trials  are  wanted  to  confirm  oral  rinse  effectiveness  in stopping  the  unfold  of  the  virus,  together with  analysis  of  toothbrush  disinfection,”  conclude the authors.

The authors have disclosed no related monetary relationships.

J Infect Dis. Revealed on-line December 28, 2020. Full text

This text initially appeared on the Portuguese edition of Medscape.

For extra information, observe Medscape on Facebook, Twitter, Instagram, and YouTube.