cusp

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cusp

 [kusp]
a pointed or rounded projection, such as on the crown of a tooth, or a segment of a cardiac valve. See also valvula.
Carabelli cusp an accessory fifth cusp on the lingual surface of many maxillary first molars; it may be unilateral or bilateral and varies in size from person to person.
semilunar cusp any of the semilunar segments of the aortic valve (having posterior, right, and left cusps) or the pulmonary valve (having anterior, right, and left cusps).

cusp

(kŭsp), [TA]
1. In dentistry, a conic elevation arising on the surface of a tooth from an independent calcification center.
See also: dental tubercle.
2. A leaflet of one of the heart's valves.
Synonym(s): cuspis [TA]
[L. cuspis, point]

cusp

(kŭsp)
n.
Anatomy
a. A pointed or rounded projection on the chewing surface of a tooth.
b. A triangular fold or flap of a heart valve.

cusp

A rigid, sharp point, especially on a leaf Cardiology One of the triangular segments of the pulmonic or aortic valve which opens and closes with the flow of blood

cusp

(kŭsp) [TA]
1. dentistry A conic elevation arising on the surface of a tooth from an independent calcification center.
2. A leaflet of a cardiac valve.
Synonym(s): cuspis [TA] .
[L. cuspis, point]

cusp

A projecting point.

cusp

one of a series of projections on the biting surface of a molar tooth in mammals.

cusp

(kŭsp) [TA]
In dentistry, a conic elevation arising on the surface of a tooth from an independent calcification center.
See also: dental tubercle
Synonym(s): cuspis [TA] .
[L. cuspis, point]
References in periodicals archive ?
Inter 1/4urst molar width: Measurements were made between the mesio-buccal cusp tips of right and left 1/4urst molars.
The spatial positions of the distobucal cusp tips of the first molars and measurement results were used for approximation of dental arch form.
So, the function calculated using distobuccal cusp tips of the first molars and the central incisors was the function that better described dental arch configuration.
The second premolar cusp tip was the deepest point of COS in all groups with the maximum depth of 2.80 +- 0.417mm in Class II div2 and minimum depth of 1.40 +- 0.693mm in Class I malocclusion.
The depth of curve of Spee was measured on dental casts as advocated by Marshall et al7 i.e the perpendicular distance between the deepest cusp tip and a flat plane touching the incisal edges of the incisors and distobuccal cusp tip of most posterior teeth of the mandibular arch as shown in Fig 1.
Baldridge18 used the perpendicular distance on both sides, and Bishara et al17 used the average of the sum of the perpendicular distance to each cusp tip. Braun et al19 and Braun and Schmidt20 used the sum of the maximum depth on both sides on plaster models.
Maxillary Intermolar width (UM-M): Distance between the mesiobuccal cusp tips of right and left maxillary permanent first molars.
He drew a straight line between two points on the cusp tips of the teeth adjacent to the extraction site.
Vernier caliper was used to measure the distance between the cusp tips of maxillary canines.
Currier defined three curves, an outer curve based on cusp tips and incisor edges, a middle curve based on fossae and fissures and cingulae and an inner curve based on inner aspects of teeth.
Study cast were analyzed to determine mesial and distal rotations of the maxillary first molars.2,7,17 The models were photocopied to 1:1 ratio.35 The angle formed between midline and a line passing through the mesiobuccal and mesiopalatal cusp tips of maxillary first molars determined their rotation (Fig 4).
The angle formed between the midline and a line passing through the mesiobuccal and mesiopalatal cusp tips of the maxil-lary first molars determined the rotation of the molars (Fig 4).