Taking a trip to fantasy island conveys the message people who use this toothpaste will never look at teeth brushing as a boring activity, but instead a whole new experience.
Children will have fun with whatever they're given. With the benefits the product provides, visits to dentist may not seem as important anymore.
Parents will always want the best for their children, even when it comes to oral health. With a product's target user as children, capturing the attention of parents is important.