(redirected from anterior tooth)
Also found in: Dictionary, Thesaurus, Medical, Financial.
Related to anterior tooth: bicuspid tooth, Endodontic therapy


see teethteeth,
hard, calcified structures embedded in the bone of the jaws of vertebrates that perform the primary function of mastication. Humans and most other mammals have a temporary set of teeth, the deciduous, or milk, teeth; in humans, they usually erupt between the 6th and 24th
..... Click the link for more information.


One of the structures found in the mouth of most vertebrates which, in their most primitive form, were conical and were usually used for seizing, cutting up, or chewing food, or for all three of these purposes. The basic tissues that make up the vertebrate tooth are enamel, dentin, cementum, and pulp (see illustration).

Structure of a toothenlarge picture
Structure of a tooth

Enamel is the hardest tissue in the body because of the very high concentration, about 96%, of mineral salts. The remaining 4% is water and organic matter. The enamel has no nerve supply, although it is nourished to a very slight degree from the dentin it surrounds. The fine, microscopic hexagonal rods (prisms) of apatite which make up the enamel are held together by a cementing substance.

Dentin, a very bonelike tissue, makes up the bulk of a tooth, consisting of 70% of such inorganic material as calcium and phosphorus, and 30% of water and organic matter, principally collagen. The rich nerve supply makes dentin a highly sensitive tissue; this sensitivity serves no obvious physiological function.

Cement is a calcified tissue, a type of modified bone less hard than dentin, which fastens the roots of teeth to the alveolus, the bony socket into which the tooth is implanted. A miscellaneous tissue, consisting of nerves, fibrous tissue, lymph, and blood vessels, known as the pulp, occupies the cavity of the tooth surrounded by dentin.

The dentition of therian mammals, at least primitively, consists of four different kinds of teeth. The incisors (I) are usually used for nipping and grasping; the canines (C) serve for stabbing or piercing; the premolars (Pm) grasp, slice, or function as additional molars; and the molars (M) do the chewing, cutting, and grinding of the food. Primitively the placentals have 40 teeth and the marsupials 50.

In therian mammals, probably because of the intricacies and vital importance of tooth occlusion, only part of the first (or “milk”) dentition is replaced. This second, or permanent, dentition is made up of incisors, canines, and premolars; as a rule only one premolar is replaced in marsupials. Although the molars erupt late in development and are permanent, that is, not replaced, they are part of the first, or deciduous, dentition.


One of a series of carved ornaments, typically a pyramidal shape or a four-petal flower, usually set in a concave molding band; used in the Romanesque and Gothic Revival styles. See also: Ornament


One of the hard bony structures supported by the jaws in mammals and by other bones of the mouth and pharynx in lower vertebrates serving principally for prehension and mastication.
(design engineering)
One of the regular projections on the edge or face of a gear wheel.
An angular projection on a tool or other implement, such as a rake, saw, or comb.
(graphic arts)
The coarse or abrasive quality of a paper or a painting ground that assists in the application of charcoal, pastels, or paint.
A paper texture that holds ink more readily.
(invertebrate zoology)
Any of various sharp, horny, chitinous, or calcareous processes on or about any part of an invertebrate that functions like or resembles vertebrate jaws.


1. In a paint film, a fine texture imparted either by pigments or by the abrasives used in sanding; this texture provides a good base for the adhesion of a subsequent coat of paint.
2. A dogtooth, 2.


1. any of various bonelike structures set in the jaws of most vertebrates and modified, according to the species, for biting, tearing, or chewing
2. any of various similar structures in invertebrates, occurring in the mouth or alimentary canal
3. any of the various small indentations occurring on the margin of a leaf, petal, etc.
4. any one of a number of uniform projections on a gear, sprocket, rack, etc., by which drive is transmitted
References in periodicals archive ?
Size of the anterior Bolton's index and frequency of the Bolton's discrepancy in the anterior tooth segment in untreated orthodontic patients.
The use of FRC restoration as a novel concept for immediate replacement of missing anterior tooth can provide minimally invasive and esthetically promising clinical result.
Chelicera: fixed finger with a slight hook; the ventral apical concavity of the fixed finger shallow and extended, anterior tooth of movable finger triangular; posterior intermediate tooth separate from primary tooth; fondal notch obscure or absent (Fig.
Type 1 (Talon): where the additional cusp projects from the palatal surface of an anterior tooth and extends at least half the distance from the CEJ to the incisal edge.
The patient had tooth size arch length discrepancy (TSALD) and according to Bolton analysis there was mandibular anterior tooth material excess.
According to Gellin, when a supernumerary primary anterior tooth is identified, any one of the following consequences to the permanent dentition is possible: (Gellin ME, 1984)
Denture tooth selection: size matching of natural anterior tooth width with artificial denture teeth.
Dentist's preferences of anterior tooth proportion- a web based study.
clenching the teeth during the day, or holding the jaw rigid) was the strongest predictor of TMD and consequently tooth surface loss31, however, some authors claim that there is no associ- ation between anterior tooth wear and self-reported TMD pain in 35 to 44-year-old subjects32 which is not in agreement with other studies that reported a strong association between TMD33 and/or occlusal disharmo- ny34 with TSL.
Based on these results, the primary anterior tooth surface color was found to be very light.
Because of the curvature of the arch, the faciolingual movement of an anterior tooth occurs at a considerable angle to the faciolingual movement of a molar.
The dental images obtained were processed in (Adobe Photoshop version 07; adobe Photoshop systems California) the mesiodistal width of each maxillary anterior tooth from labial surface was measured using measuring tool of this software and recorded in computer spread sheet.

Full browser ?