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Tooth²is a set of toothbrush and toothpaste designed for the disabled people who have only one hand. Brushing teeth is very usual and simple for normal people in daily life. However, it doesn’t seem so easy for those people who have only one hand. Squeezing toothpaste, brushing teeth and gargling with water must be done by one hand, which is very inconvenient. What’s worse, they will become frustrated even lose the courage to live. Tooth²can help them enjoy brushing teeth easily and comfortably. In addition, although the Tooth² is for the disabled, normal people will feel very convenient and get a unique experience using it.