The incisors are the eight chisel-shaped front teeth, a central and a lateral incisor in each quarter of the mouth. They have a thin straight cutting edge and usually a single conical root. Upper central incisors are the widest teeth at the front of the mouth.
| Location | Front of both dental arches, between the canines |
|---|---|
| Parts |
|
| Nerve Supply | Anterior superior alveolar nerve (upper); Incisive branch of the inferior alveolar nerve (lower) |
| Blood Supply | Anterior superior alveolar artery (upper); Incisive branch of the inferior alveolar artery (lower) |
| Venous drainage |
|
| Lymphatic drainage |
|
Cut and bite off pieces of food and support the upper and lower lips, with an important role in the sounds of speech such as 'f', 'v' and 'th'.
Incisors are the teeth most often injured in falls, sports and assaults, and crown fractures are graded by whether they reach dentin or pulp. An avulsed permanent incisor should be replanted as soon as possible or stored in milk or saliva on the way to a dentist. Congenitally missing or small peg-shaped upper lateral incisors are among the most common dental anomalies.
Traumatic fracture of the incisal edge or crown; enamel-only fractures are minor, while exposure of dentin or pulp needs prompt dental treatment.
Complete knocking out of a front tooth, best managed by immediate replantation holding the crown, not the root.
Developmental absence or peg shape of upper lateral incisors, causing gaps that may need orthodontic or prosthetic treatment.
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