Human Canine Teeth: Anatomy, Function, and the "Fangs" Myth

Humans have four canine teeth (two upper, two lower)—also called cuspids or eyeteeth. They are the third tooth from the midline, with a single pointed cusp and the longest root of any tooth.

Anatomy and Function

• Shape: Conical, pointed crown; single long root.
• Position: Cornerstones of the dental arch; guide jaw movement (canine guidance).
• Function: Tearing food, stabilizing the bite, supporting lip contour.
• Eruption: Primary canines at 16–22 months; permanent at 11–13 years (upper), 9–11 years (lower).

Why They're Not "Fangs"

• Human canines are relatively small, not elongated or razor-sharp.
• No diastema (gap) for interlocking with opposing canines.
• Reduced size reflects dietary evolution (cooking, tools) and reduced sexual dimorphism.
• Some individuals have slightly larger/more pointed canines ("vampire teeth" cosmetically), but they are functionally normal.

Common Issues

• Impaction (especially upper canines) – requires orthodontic/surgical exposure.
• Wear from bruxism.
• Gingival recession (prominent root).

Canines are essential for a functional, aesthetic smile—not for piercing prey.