The Princess of Asturias had a bad tooth, in fact a part of her gum, that she had mad repar very well and her smile which was yet estupendous is now more fanatastic.
For everybody, Royal or no,to have good teeth is a question of health, yes; but also esthetic. Today it's easy to repar the desordre of a mouth even when you didn't do when you were little.
A lot of us know adults with dental jackets ! Why not the Royals who need it