The high point of the lingual surface of the right mandibular central incisor is

Does the subject want to ask "where is the high point of the lingual surface of the right mandibular central incisor?" Located in the middle third of the lingual surface.

The high point of the lingual surface of the right mandibular central incisor is located in the middle third of the lingual surface. The contour high point refers to the most prominent part on the axial surface of the crown. The contour high point of maxillary central incisor is located at the junction of the middle lip and neck, and the contour high point of mandibular central incisor is located at the middle third of the lip.