Catholic icon, Saint Apollonia, by the ‘Pope of Pop’, Andy Warhol. Based on a 15th century Renaissance painting by Piero Della Francesca, Saint Apollonia holds a tooth within pincers in reference to her grisly martyrdom in the 3rd century AD. The Patron Saint of dentists and toothaches was an apt choice for Warhol, who was constantly plagued by physical ailments.