According to the expert, you should change your toothbrush every three months – unless you have a mouth or gum infection. However, if you have a mouth or gum infection, you need to change the toothbrush more often to avoid reinfecting yourself.' Where people tend to go wrong is not how often they change their toothbrush, but how they clean and store it between uses, according to Dr Freestone. Dr Freestone agrees with the NHS's advice to change out your toothbrush every three months. While this is probably more than you're doing at the moment, Dr Freestone says she even goes a step further with her own toothbrush.

Source: Daily Mail February 25, 2026 12:12 UTC