Adult teeth are not as robust as you believe. The enamel of new adult teeth is weaker and more susceptible to decay, and the combination of small and large teeth makes cleaning more difficult.Aquafresh Big Teeth toothbrush was created specifically for youngsters aged six and up. It includes a creative handle design and a mixed bristle head that is meant to assist clean mixed teeth, gaps, and gums while encouraging youngsters to brush on their own. The padded brush head protects sensitive gums. The flexible neck flexes to accommodate extra brushing pressure