Remember the times when people where looking down on everbody who had a tatoo? Well, the same is probably true when someone discovers that the remainders of the salad you had for lunch are still sticking to your front tooth. But this is only a problem for prejudiced people. In the near future, this will be a priviledge: people will be able to choose color and shape of the food particles that are sticking to their teeth. Of course, since the food particles are artificial, they will not...