The American Dental Association recommends replacing your toothbrush every three to four months.
According to the American Dental Association (ADA), you should replace your toothbrush (or the head of an electric toothbrush) once every three to four months.
As Keith Arbeitman, a dentist in New York City, explained in an interview with Business Insider, how often you should swap your toothbrush for a new one depends on how frequently you use it. A telltale sign of wear is when the brush’s bristles start to bend, he said.
