Skip to main content

Unfortunately we don't fully support your browser. If you have the option to, please upgrade to a newer version or use Mozilla Firefox, Microsoft Edge, Google Chrome, or Safari 14 or newer. If you are unable to, and need support, please send us your feedback.

Elsevier
Publish with us
Mandibular Lateral Incisor Tooth
Skeletal System

Mandibular Lateral Incisor Tooth

Dens incisivus lateralis mandibularis

Read more

Quick Facts

Location: Distal to mandibular central incisor tooth; mesial to mandibular canine tooth.

Eruption: 13 months (deciduous); 7 to 8 years (permanent).

Key Features: Crown, root, incisal margin, cingulum, and lingual fossa.

Nerve Supply: Inferior dental plexus.

Arterial Supply: Incisive branch of inferior alveolar artery.

Complete Anatomy
The world's most advanced 3D anatomy platform
Try it for Free

Key Features & Anatomical Relations

The mandibular lateral incisor tooth is one of the two incisor teeth that are found in a quadrant of the mandibular dental arcade. It includes the following bony features:

- parts: crown, root, and cervical line;

- surfaces: incisal margin, and labial, lingual, mesial, and distal surfaces;

- landmarks: cingulum, marginal ridges, and lingual fossa.

The mandibular lateral incisor tooth is located:

- distal to the mandibular central incisor tooth;

- mesial to the mandibular canine tooth.

The root of the mandibular lateral incisor tooth is lodged in a dental alveolus of the mandible.

Development

The deciduous mandibular lateral incisor tooth undergoes calcification during the sixteenth week in utero, with the development of the crown being completed during the third month after birth. Eruption of this tooth occurs during the thirteenth month after birth and the development of the root is completed during the second year.

The permanent mandibular lateral incisor tooth undergoes calcification during the third to fourth months after birth, with the development of the crown being completed during the fourth to fifth years. Eruption of this tooth occurs during the seventh to eighth years and the development of the root is completed during the tenth year (Nelson, 2014).

Function

As with all incisors, the mandibular lateral incisor tooth is blade-like and specializes in the cutting (incision) of food during mastication.

References

Nelson, S. J. (2014) Wheeler's Dental Anatomy, Physiology and Occlusion. 10th edn.: Elsevier Health Sciences.

Learn more about this topic from other Elsevier products

Mandibular Lateral Incisor

ScienceDirect image

If a mandibular lateral incisor is used in the age estimation, then sex is specific to the regression formula.

Explore on ScienceDirect(opens in new tab/window)

Complete Anatomy

The world's most advanced 3D anatomy platform

Complete Anatomy