Kids are not exactly the best or most effective when it comes to brushing their teeth—if you can get them to do it at all. But if they can brush those teeth while looking like Charmander and helping to save other Pokémon who have been captured by (gasp!) cavity-causing bacteria, well, that might be just the motivation…
Source: LifeHacker – Get Kids to Brush Their Teeth With the Pokémon Smile App