Help prevent cavities and maintain excellent oral hygiene with the Oral-B Cavity Defense Toothbrush. Designed with unique bristles that deeply clean even the most hard-to-reach spaces between your teeth, this toothbrush is both comfortable to hold and efficient. It even lets you know when it’s time to replace it!Oral-B Cavity Defense provides the basic anti-cavity benefits you need in a toothbrush. Dual cup bristles designed to clean deep in between teeth and along the gum line. Freshens breath molded tongue cleaner designed to help freshen breath. Blue Indicator bristles fade halfway so you know when to replace your brush.