Seven Strategies for Sanitizing and Disinfecting Your Toothbrush
In the realm of oral hygiene, maintaining a clean toothbrush is crucial. Here's a roundup of scientific findings and dental association recommendations to help you keep your toothbrush in tip-top shape.
A study conducted in 2008 investigated the effectiveness of hydrogen peroxide in disinfecting toothbrushes, but it's the more recent findings that have garnered attention. For instance, a 2014 study concluded that using a UV toothbrush sanitizer for 7 minutes is more effective than 12 hours in a 0.2 percent chlorhexidine solution.
But what about storing your toothbrush? Storing a moist toothbrush in a closed container increases microbial growth by 70 percent compared to leaving it exposed to the open air. Therefore, it's best to store your toothbrush upright in a ventilated space, away from other toothbrushes.
When it comes to sanitizing an electric toothbrush head, rinsing thoroughly, storing upright, and letting it air-dry is the way to go. To disinfect the bristles, remove the head and use the same methods as for a manual toothbrush.
While there isn't enough evidence that bacteria on toothbrushes can actually hurt you, some people may still want to sanitize their toothbrush for a more serious clean. If you fall into this category, there are several methods to consider.
Soaking a toothbrush bristles in a mouthwash can kill bacteria. Listerine, for example, reduces bacteria count by 31 percent, while a germicidal mouthwash containing chlorhexidine gluconate reduces bacteria by 58 percent. Dissolving half a denture cleaner tablet in a cup of water and soaking a toothbrush for about a minute can also help kill bacteria on the toothbrush.
However, it's important to note that the Centers for Disease Control and Prevention (CDC) states that you don't need a UV sanitizer to clean your toothbrush. In fact, a 2022 study found that a UV sanitizer reduced bacteria on toothbrushes by 77 percent.
Hot water can soften toothbrush bristles and make it easier to loosen gunk in the brush head, while warm water can also clean surfaces and help kill bacteria. Rinsing and shaking a toothbrush to remove extra moisture goes a long way toward inhibiting germ growth.
However, heat from the dishwasher, microwave, or hair dryer will damage the bristles and make your toothbrush less effective. Dentists do not recommend using high heat methods to clean a toothbrush.
White vinegar can kill microorganisms on toothbrushes, including Streptococcus mutans and Staphylococcus aureus, but is not a registered disinfectant. Baking soda, when mixed with water and used to soak a toothbrush for 15 minutes, can help keep toothbrushes clean but does not disinfect like hydrogen peroxide.
The American Dental Association (ADA) recommends replacing toothbrushes every 3 to 4 months, or more often if the bristles are visibly matted or frayed. When purchasing a new toothbrush, look for the ADA Seal of Acceptance for assurance of safety and efficacy.
Lastly, it's worth mentioning that a 2019 study found that decontaminating your toothbrush may cause it to break down more quickly. So, while keeping your toothbrush clean is important, be mindful of the methods you use to ensure its longevity.
In conclusion, maintaining a clean toothbrush is essential for good oral hygiene. By following these tips and recommendations, you can keep your toothbrush clean and effective, promoting a healthier smile.
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