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Definition
| of or pertaining to the upper arch of the mouth |
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Definition
| of or pertaining to the lower arch of the mouth |
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Definition
| toward the center line of the dental arch |
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Term
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Definition
| away from the center line of the dental arch |
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Term
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Definition
| the mesial or distal surface of a tooth or the portion of a cavity that is nearest to the adjacent tooth |
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Definition
| adjacent to the cheek (premolars and molars) |
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Term
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Definition
| toward the lip (incisors and canines) |
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Term
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Definition
| a general term to include buccal and labial surfaces of teeth in both the maxillary and mandibular arches |
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Term
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Definition
| pertaining to the masticating surfaces of the posterior teeth |
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Definition
| next to or toward the tongue |
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Term
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Definition
| relating to the cutting edge of the anterior teeth, the incisors and canines |
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Term
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Definition
| an internal wall perpendicular to the long axis of the tooth |
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Term
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Definition
| an internal wall parallel to the long axis of the tooth |
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Term
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Definition
| an elevation or mound on the crown portion of the tooth making up a divisional part of the occlusal surface |
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Term
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Definition
| a large rounded eminence on the lingual surface of all anterior teeth, which encompasses the cervical third of the lingual surface |
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Term
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Definition
| an elevation smaller than a cusp on some portion of the crown produced by an extra formation of enamel (These are deviations from the typical form except for the Cusp of Carabelli on the maxillary first molar.) |
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Term
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Definition
| rounded projections on incisal edges of incisors which normally wear away shortly after eruption |
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Term
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Definition
| any linear elevation on the surface of the tooth and is named according to its location |
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Term
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Definition
| those rounded borders of the enamel that form the mesial and distal margins of the occlusal surfaces of premolars and molars and the mesial and distal margins of the lingual surfaces of the incisors and canines |
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Term
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Definition
| linear ridges which descend from the tips of cusps of posterior teeth toward the central area of the occlusal surface forming a triangular shape |
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Term
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Definition
| the union of a buccal and lingual triangular ridge crossing transversely the surface of a posterior tooth |
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Term
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Definition
| a ridge crossing obliquely the occlusal surfaces of maxillary molars and formed by the union of the triangular ridge of the distobuccal cusp and the distal cusp ridge of the mesiolingual cusp |
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Term
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Definition
| the ridges extending from a cusp tip; each cusp has four cusp ridges extending in different directions (mesial, distal, facial, and lingual) |
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Term
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Definition
| an irregular depression or concavity |
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Term
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Definition
| located on the lingual surface of incisors |
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Term
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Definition
| located on the occlusal surfaces of molars, formed by the converging of ridges terminating at a central point in the bottom of the depression where there is a junction of grooves |
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Term
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Definition
| located on molars and premolars on the occlusal surfaces adjacent to marginal ridges (They are sometimes found on the lingual surfaces of maxillary incisors at the edge of the lingual fossae where the marginal ridges and the cingulum meet.) |
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Term
| developmental (primary) groove |
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Definition
| a shallow groove or line between the primary parts, or lobes, of the crown of a tooth |
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Term
| supplemental (secondary) groove |
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Definition
| an auxiliary groove which branches from a developmental groove, and is not related to the junction of primary parts of the crown |
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Term
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Definition
| small pinpoint depressions located at the junction of developmental grooves or at terminals of these grooves |
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Term
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Definition
| where two walls (surfaces) meet – i.e. mesiobuccal line angle |
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Term
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Definition
where three walls (surfaces) meet – i.e. mesio-occluso-buccal point angle
*When combining words to form the name of a line angle or point angle, the last two letters of all but the last word are dropped and the letter “o” is substituted. Two o’s are separated by a hyphen.
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Term
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Definition
| the area of the proximal surface (mesial or distal) of a tooth that touches an adjacent tooth in that arch |
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Term
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Definition
| the open spaces between the proximal surfaces of adjacent teeth |
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Term
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Definition
one of four or five, primary centers of formation of a tooth’s crown
Cusps are representative of lobes. Mamelons represent the incisal termination of a lobe.
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Term
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Definition
| a surface that curves inward |
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Term
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Definition
| a surface that curves or bulges outward |
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