Is Toothbrush Sanitisation Necessary? Dentists Weigh In

An article on Indian Express by the Lifestyle Desk explores the growing conversation about whether toothbrush sanitisation is necessary for maintaining oral hygiene. This discussion, fueled by insights from dental experts, sheds light on the risks of not sanitising toothbrushes and offers guidance on best practices to ensure a cleaner, healthier mouth.

The Case for Sanitising Toothbrushes

Toothbrushes, a cornerstone of oral hygiene, often go unnoticed as potential reservoirs for harmful microorganisms. According to Dr. Joyce Kahng, a content creator who frequently discusses dental health topics, “There are actually many ways to sanitise a toothbrush. A lot of people out there never sanitise their toothbrushes and leave it out in the open next to a toilet.”

The concern about toothbrush hygiene is particularly significant in households where toothbrushes are stored close to toilets, raising fears of bacterial contamination from aerosolised particles.

Dr. Ramakrishna Tanguturi, a maxillofacial and dental surgeon at Dental Profiles, further highlights the risks: “Not sanitising your toothbrush regularly can pose risks. Over time, a toothbrush can harbour bacteria, fungi, and even viruses, especially if it is stored in a moist environment.” He warns that microorganisms such as Streptococcus mutans, responsible for cavities, or Escherichia coli (E. coli) from bathroom exposure, can multiply on toothbrushes.

Using a contaminated toothbrush repeatedly can introduce pathogens into the mouth, potentially causing infections such as gingivitis, periodontitis, or reinfection after an illness.

How Bacteria Impact Oral Health

Dr. Tanguturi elaborates on the consequences of bacteria-laden toothbrushes: “Bacteria on a toothbrush can reintroduce harmful microorganisms into the mouth, contributing to plaque buildup, tooth decay, and gum disease.” He also notes that certain studies link toothbrush pathogens to conditions like bad breath and the exacerbation of pre-existing gum issues.

Given these risks, maintaining a clean toothbrush is crucial to overall oral health.

Best Practices for Toothbrush Care

To minimise bacterial contamination, Dr. Tanguturi suggests adopting these hygiene practices:

• Rinse thoroughly: Wash the toothbrush after each use to remove food particles and toothpaste residue.
• Store upright: Let the toothbrush air dry in an upright position to prevent moisture buildup, which encourages microbial growth.
• Avoid airtight covers: While they may seem protective, airtight caps trap moisture and foster bacteria.
• Replace regularly: Switch to a new toothbrush every three to four months to maintain effective bristles and minimise bacterial accumulation.

Methods for Sanitising Toothbrushes

For those seeking additional sanitisation measures, Dr. Tanguturi outlines several effective methods:

• UV light sanitisers: Devices that emit ultraviolet rays can kill up to 99% of bacteria and viruses on toothbrushes by disrupting their DNA.
• Antibacterial mouthwash: Soaking a toothbrush in mouthwash can effectively kill bacteria on its bristles. This method is simple and widely accessible.
• Boiling water: Immersing a toothbrush in boiling water for a few minutes can eliminate bacteria, but Dr. Tanguturi cautions against frequent use, as it may damage the bristles.
• Dishwasher cleaning: Some individuals opt to clean their toothbrushes in the dishwasher. While the heat and detergent kill germs, this method may shorten the toothbrush’s lifespan.

By incorporating these methods and best practices, individuals can significantly reduce the risk of reintroducing harmful bacteria into their mouths.