Incisors (from Latin incidere to cut) are the front teeth present in most heterodont mammals. They are located in the premaxilla above and on the mandible below. Humans have a total of eight (two on each side top and bottom). Opossums have 18 whereas armadillos have none.
This page contains content from the copyrighted Wikipedia article "Incisor"; that content is used under the GNU Free Documentation License (GFDL). You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.