Knowra Incisor Incisor An incisor is a front tooth adapted for cutting or gnawing. Incisors occur in mammals and several other vertebrates, with forms suited to different diets and uses.
Tooth : A hard structure in the mouth used to bite, cut, grind, or otherwise process food. Incisors are one type of tooth, distinguished by their position and cutting edge.
Tooth wear : The loss or reshaping of tooth tissue through contact, abrasion, or chemical action. Cutting and gnawing wear incisor edges, shaping their usefulness over time.
Gnawing : Repeated biting with the front teeth to cut, scrape, or break material. Gnawing is the characteristic use of many mammalian incisors.
Canine tooth : A tooth positioned beside the incisors, often pointed and adapted for grasping or tearing. Canines flank incisors but usually have a pointed rather than chisel-like form.
Dental formula : A notation that records the number of each tooth type in one side of an animal's upper and lower jaws. It specifies how many incisors an animal has and where they sit among other teeth.
Hypselodont : Describing teeth that grow continuously throughout an animal's life. Rodent incisors keep extending, replacing tissue removed by gnawing and wear.
Herbivore : An animal that obtains most of its food from plants or other photosynthetic organisms. Plant-eating animals use incisors to crop vegetation before chewing.
Premolar : A tooth between the canine and molars, commonly used to crush or shear food. Premolars sit behind incisors and perform different stages of food processing.
Tooth enamel : The highly mineralized outer covering of a tooth crown. Enamel forms the hard cutting surface of an incisor's crown.
Rodent : A mammal in the order Rodentia, typically characterized by a pair of continuously growing incisors in each jaw. Rodents use chisel-shaped incisors to gnaw and maintain their length through wear.
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