When should patients replace their toothbrushes?

Experts detailed best practices for replacing or sanitizing a toothbrush after sickness.

Some viruses or bacteria can linger on the toothbrush for several days, according to a report from Verywell Health. The experts cited in the article explained that although pathogens can reside on the toothbrush after it’s been used during a sickness, continuing to use the toothbrush doesn’t typically result in reinfection because the antibodies produced during the sickness are capable of preventing recurring infections.

However, if individuals who are sick share toothbrush holders, all of the toothbrushes involved should be replaced to avoid spreading the disease to others. Additionally, individuals who are severely immunocompromised or who have experienced a cold sore should switch out their toothbrush for a new one to minimize the risk of reinfection.

Even though the ADA indicated that the efficacy of toothbrush sanitization is understudied, some data has found that hydrogen peroxide and ultraviolet light could reduce bacteria on toothbrushes. Further, rinsing a toothbrush under cold running water can also help remove debris and excess toothpaste from the toothbrush after use; also, leaving the toothbrush uncovered and in an upright position can help mitigate the growth of bacteria. The experts concluded that toothbrushes should be replaced every three to four months or as soon as the bristles are frayed.

Read more: Verywell Health

The article presented here is intended to inform you about the broader media perspective on dentistry, regardless of its alignment with the ADA's stance. It is important to note that publication of an article does not imply the ADA's endorsement, agreement, or promotion of its content.