It is crucial to regularly replace your toothbrush to ensure proper hygiene. Not to mention, the bristles of a toothbrush wear out over time; for example, they may break after an extended period, and worn-out bristles are more likely to harm the gums. It is absolutely essential to replace your toothbrush every 8-12 weeks, as recommended by the dentist. If someone experiences frequent gum bleeding or gum issues, they may need to replace their toothbrush more often, as bacteria can accumulate on the toothbrush and exacerbate symptoms. The set includes a toothbrush and toothpaste.