Maintaining good oral health requires brushing twice daily, but equally important is regular toothbrush replacement. The lifespan of a toothbrush impacts its effectiveness in removing plaque and preventing dental problems. While frequency varies based on usage and bristle condition, experts recommend replacing toothbrushes every three months. Worn bristles harbor bacteria and lose their ability to clean effectively. Proper storage, allowing the brush to air dry, also prevents bacterial growth. Regularly replacing and correctly storing your toothbrush contributes significantly to overall dental hygiene and a healthy smile.