Prevent Bacterial Growth in Your Water Flosser

Dental irrigators are highly effective tools for maintaining optimal oral hygiene, particularly in cleaning difficult areas such as interdental spaces and the gums. However, if they are not cleaned properly, these devices can become a breeding ground for bacteria and pathogens that can harm oral health.

Why Is It Important to Clean a Dental Irrigator?

Dental irrigators use pressurised water to remove food debris, plaque, and bacteria. However, the humid environment and accumulation of residues can create a favourable setting for the growth of microorganisms. Studies have shown that stagnant water in the reservoir and accumulated residues in the nozzles and tubing can harbour bacteria such as Legionella or Pseudomonas. If not eliminated, these bacteria can enter the mouth with the use of the irrigator, putting periodontal and overall health at risk. Specifically, the following study involved daily analysis to assess whether the daily use of a dental irrigator, specifically the Philips Sonicare, could lead to bacterial accumulation in the nozzle or the device itself.

Methodology of the Study

To conduct this analysis, researchers divided participants into two main groups:

– Intraoral Group: Participants used the irrigator once a day after brushing, using bottled water and rinsing the nozzle.

– Extraoral Group: Participants filled the reservoir and used it without any contact with the mouth or rinsing.

In both cases, bottled water was used for three weeks, and samples of saliva, the water stream from the irrigator, and bottled water were collected to analyse bacterial levels and the proliferation of specific pathogens.

Results of the Study

The study revealed notable differences between the two groups:

– Intraoral Group: After three weeks of use, several devices showed the presence of aerobic and anaerobic bacteria typical of stagnant water environments. In some cases, pathogens were detected in the water stream and saliva samples, indicating a transfer of bacteria through the device.

– Extraoral Group: Although bacteria were also detected, contamination was lower compared to the intraoral group. No oral pathogens were found in the water stream, nor was there significant bacterial growth in the reservoir or bottled water.

Additionally, a thin biofilm was found at the tip of some nozzles, similar to bacterial accumulation in water pipes.

Additional Maintenance: Use of Antibacterial Solutions

Some models allow the use of mouth rinses instead of water, which can provide an additional layer of antibacterial cleaning. Nevertheless, it is still essential to use clean water between each mouth rinse application to avoid chemical build-up and ensure the device’s longevity.

Recommendations for Those Using Dental Irrigators

A well-maintained dental irrigator is an essential tool for oral health; however, if not cleaned properly, it can become a source of harmful bacteria. Regular cleaning and proper maintenance not only ensure its effectiveness but also prevent health issues.
If you want to know how to clean your water flosser, check out this article.