This makes the cervical line appear as a semicircle in shape.

Also, the cervical line curves less in comparison to the mesial view.

Furthermore, a cross-section of the tooth at the cervical line would show a general triangle appearance.

More than any other tooth in the mouth, the cervical line from this view curves tremendously toward the incisal.

Depicted by the cementoenamel junction, the cervical line is the border between the root and crown of a tooth.

The cementum joins the enamel to form the cementoenamel junction, which is referred to as the cervical line.

The crest of curvature for the palatal and labial surfaces is located directly incisally to the cervical line.

On the mesial and distal surfaces, the cervical line curves incisally, which is also seen in the permanent maxillary central incisor.

At the level of the cervical line, the shape of the canal is triangular but becomes circular at the middle level of the root.

The palatal side of the maxillary central incisor has a small convexity, called a cingulum near the cervical line and has a large concavity, called the lingual fossa.

The cervical line, which is seen as the border between the crown and the root of the tooth, is closer to the apex of the root in the center of the tooth.

TR has also been called "feline odontoclastic resorption lesion" (FORL), neck lesion, cervical neck lesion, cervical line erosion, feline caries, or feline cavity.