Replacing your toothbrush every 3 to 4 months means you’re eliminating built-up gunk and getting bristles that clean like they should, not limp ones that are tired and ineffective. If you’ve been sick or have oral health issues, replace even more often – because there’s no downside to a fresh, clean toothbrush. For a free oral health consultation to see how clean your teeth are, call Capri Modern Dentistry in San Diego at 858-679-8918.