Makes brushing fun. Now kids will want to brush because they love Scooby Doo. And Reach with its unique angled neck is specially designed for kids to help them clean the hard-to-reach places in their mouths. 1. Soft Bristles - effectively clean teeth and are gentle on gums. 2. Power Tip - packed with bristles, to help clean between teeth, behind front teeth and hard-to-reach back teeth. 3. Bi-level bristles - clean tooth surfaces and massage gums. Dental professionals recommend replacing your toothbrush every 3 months.