English · Svenska · Deutsch · Español · Latina

Mandibular right lateral incisor

Slightly larger than the mandibular central incisor, with a crown that is slightly twisted distally on the arch curve.

Open in 3D →

FDI

42

Universal

26

Palmer

LR2

Roots

One

Root canals

Usually one, sometimes two

Eruption

About 7–8 years

Form and anatomy

The crown is a little wider and longer than that of the central incisor and no longer symmetrical: the distoincisal angle is more rounded than the mesioincisal angle. Seen from the incisal side, the incisal edge is slightly twisted distolingually, following the curve of the dental arch, and the cingulum lies a little distal to the centre of the root. These features help separate lateral from central incisors and right from left. The lingual fossa and marginal ridges are slightly more developed than on the central incisor. The root resembles the central incisor's, flattened mesiodistally and broad labiolingually with proximal depressions, but is usually somewhat longer. Two canals, labial and lingual, occur in a notable share of teeth and are easy to miss in root canal treatment.

Function

Cutting food.

Clinical relevance

Like the central incisor, may contain two canals.

Neighbouring teeth

Mesial neighbour

Mandibular right central incisor

Distal neighbour

Mandibular right canine

Same tooth, other side

Mandibular left lateral incisor

Opposing tooth

Maxillary right lateral incisor

This text is a draft and has not yet been reviewed by a dental professional. Educational reference only, not for diagnosis or treatment.