Baby, Kids' and Children's Products Design TTONE interaction toothbrush by Nien-Fu Chen TTone is an interactive toothbrush for children, which plays music without traditional batteries. TTone captures the kinetic energy produced by the brushing action. The concept is to make brushing to be a more interesting for the child, whilst also developing healthy dental hygiene habits. The music comes from the replaceable brush, When the brush is replaced they get a new musical tune along with the new brush. The music entertains the child, encouraging them to brush for the correct time, whilst also allowing the parents to know whether their child has completed their brushing time or not.