An incisor was a type of tooth located in the front of the mouth.
In Humans, incisor teeth were believed to have been fangs at one point. In 2266, Doctor Robert Crater compared Humans' retention of incisors and a chameleon's ability to change color for camouflage to the M-113 creature's ability to change forms, saying it was a survival mechanism. (TOS: "The Man Trap")
In 2372, shortly after the birth of Naomi Wildman, The Doctor advised her mother, Samantha, that Naomi's incisors would erupt within three to four weeks, due to her Ktarian/Human heritage. This meant that Samantha would need to find alternatives to breast feeding. (VOY: "Deadlock")
| Teeth |
|---|
| Teeth and related anatomy: Anterior tricuspid • Eye tooth • Fang • Gums • Incisor • Jaw • Molar • Palate • Tongue • Tusk |
| Medical conditions: Bite mark (Bite radius) • Cavity • Eruption • Teeth grinding • |
| Medical procedures: Tooth extraction |
| Occupations: Dentist • Hygienist • Orthodontist |
| People: Tooth Fairy |
| Products: False teeth • Skagaran whiskey • Teething ring • Toothbrush • Mars Toothpaste • Tooth sharpener • Trifluorinate compound |
| Organizations: Starfleet Dental |
| Other: Dragon's teeth • Sweet tooth |