In 2151, Doctor Phlox diagnosed T'Pol with a cavity in one of her anterior tricuspids and promptly treated it. (ENT: "Dear Doctor") Tricuspids are likely a form of premolar as bicupids are in Humans. It is unclear to what extent the presence of tricuspids affects the arrangement of Vulcans' teeth, that is, whether tricuspids exist and bicuspids do not, whether they are arranged behind bicuspids in the place occupied in Humans by molars, or whether they exist in addition to both the two bicuspids and three molars in the Human arrangement. From existing images of Vulcans, it can be determined that Vulcans lack neither incisors nor canines, teeth that are arranged nearer the front of the jaw than premolars and molars.