What Are Mandibular Incisors?

The mandibular central incisor is the smallest volume of the permanent permanent teeth, and its shape is relatively symmetrical.

Mandibular incisor

Right!

Mandibular central incisor is full mouth

The mandibular central incisor is the smallest tooth in the total permanent teeth, and its shape is relatively symmetrical. Its morphological characteristics are as follows:

The crown width of the mandibular central incisor is about 2/3 of the width of the maxillary central incisor.
(1) Lip surface: It is smooth and flat like a trapezoid, the diameter of the cut neck is obviously larger than the diameter of the mesial distance, the mesial edge is symmetrical to the mesial edge, the mesial angle is approximately equal to the mesial angle, the cut edge is straight, It is difficult to distinguish left and right.
(2) Tongue surface: The tongue surface fossa is shallow, the incision and the mesial and distal edges are not obvious, and the tongue bulge is small.
(3) Adjacent surface: It looks like a triangle, and the contact area in the near, middle, and far sides is close to the cut angle at 1/3.
(4) Incision: The incision is located on the long axis of the tooth or slightly lingually when viewed from the adjacent surface.

Narrow and flat single root, relatively straight, 1/3 cross section of the root has a gourd shape. The long depression in the far-middle plane of the root is slightly deeper than the near-middle plane, which can be used as a reference for identifying left and right.