1.a tooth situated at the front of the mouth"his malocclusion was caused by malposed anteriors"
2.a tooth for cutting or gnawing; located in the front of the mouth in both jaws
1.(MeSH)Any of the eight frontal teeth (four maxillary and four mandibular) having a sharp incisal edge for cutting food and a single root, which occurs in man both as a deciduous and a permanent tooth. (Jablonski, Dictionary of Dentistry, 1992, p820)
IncisorIn*ci"sor (?; 277), n. [NL.] (Anat.) One of the teeth in front of the canines in either jaw; an incisive tooth. See Tooth.
IncisorIn*ci"sor, a. Adapted for cutting; of or pertaining to the incisors; incisive; as, the incisor nerve; an incisor foramen; an incisor tooth.
definition of Wikipedia
élément du squelette humain (fr)[Classe]
situé, placé (fr)[Classe...]
(anatomy; general anatomy)[termes liés]
(facade; front; façade; heads)[termes liés]
|This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2009)|
|Permanent teeth of right half of lower dental arch, seen from above.|
|The permanent teeth, viewed from the right.|
|Gray's||subject #242 1115|
In many omnivorous mammals, such as the human, they are adapted for shearing sharply. In cats, the incisors are small; biting off meat is done with the canines and the carnassials. In elephants, the upper incisors are modified into curved tusks, just as is the case with Narwhals, where normally one of them develops into a straight and twisted tusk. The incisors of rodents grow throughout life and are worn by gnawing.
Adult humans normally have eight incisors, two of each type. The types of incisor are:
Children with a full set of deciduous teeth (primary teeth) also have eight incisors, named the same way as in permanent teeth. Young children may have from zero to eight incisors depending on the stage of their tooth eruption and tooth development.
Among other animals, some other primates, cats and horses have twelve. Rodents have four, while Foxes have nine. Rabbits and hares (lagomorphs) were once considered rodents, but are distinguished by having eight—one small pair, called "peg teeth", is located directly behind the most anterior pair. Incisors are used to bite off tough foods, such as red meat.
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