As it turns out, the three- to four-month guideline goes for more than just manual brushes—it's the same for all types of ...

Dental experts warn your toothbrush harbors harmful bacteria after three months of use, potentially causing gum damage, ...

However, the individual situation, such as brushing pattern and type of toothbrush, may change this timeline. Manual toothbrushes and electric toothbrush heads both tend to wear out eventually ...