Descriptive anatomy of the human teeth / by G.V. Black.

  • Greene Vardiman Black
Date:
1892
Catalogue details

Licence: Public Domain Mark

Credit: Descriptive anatomy of the human teeth / by G.V. Black. Source: Wellcome Collection.

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    Incisor. A tooth with a cutting edge. There are four incisors in the upper jaw, and four in the lower jaw. They are called the upper and lower right and left central, and the upper and lower right and left lateral, incisors. Inclination. Of a tooth ; the deviation of the long axis of a tooth from the perpendicular line ; as the mesial incli- nation of the incisors. (See Par. 191.) Of a surface: the deviation of a portion of the surface of a tooth from the general plane of that surface. Incline. See Inclination. Interproximate space. The V-shaped space bounded by the proximate surfaces of adjoining teeth, and the border of the septum of the alveolar process between their necks. Normally this space is filled with gum tissue. (See Par. 193.) Labial. Pertaining to the lips. Toward the lips. Labial surface. The surface of a tooth next to the lips. The incisors and cuspids have labial surfaces. Labially. Toward the lips. Labio-lingual. From the lips toward the tongue; as the labio-lingual diameter of the central incisor. Lingual. Next to, or toward the tongue; as lingual surface. Lingually. Toward the tongue. Lingual surface. A surface of a tooth next to the tongue. All of the teeth have lingual surfaces. ifinguo-gingival fissure. A fissure occurring occasion- ally in the lingual surface of the upper incisors. It usually separates the lingual lobe from one of the marginal ridges and extends into the cementum. (See Fig. 10.) Linguo-gingival ridge. A ridge near the gum on the lingual surface of the incisors and cuspids. It is on the lin- gual lobe. (See Par. 21.) Marginal ridge. The ridges, or elevations of enamel on the margins of the occluding surface of the bicuspids and
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