When the white, hard outer layer of enamel on your teeth is eroded away, it exposes the dentin beneath. Dentin is the yellow-ish tissue that makes up the core of each tooth.
Apr 9, 2018
From Kadar Orthodontics...
In 1894, when the Spanish king's son lost his first tooth, a priest crafted the story of Ratoncito Perez (aka Perez the Mouse). Since then, he has served as the tooth fairy for several Hispanic cultures.