cusp


Also found in: Dictionary, Thesaurus, Acronyms, Idioms, Encyclopedia, Wikipedia.

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

(kusp) a pointed or rounded projection, such as on the crown of a tooth, or one of the triangular segments of a cardiac valve.
Enlarge picture
Cusps of the atrioventricular (tricuspid) valve.

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)
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

Etymology: L, cuspis, point
1 a sharp projection or a rounded eminence that rises from the chewing surface of a tooth, such as the two pyramidal cusps that arise from the premolars.
2 any one of the small flaps on the valves of the heart, as the ventral, dorsal, and medial cusps of the right atrioventricular 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]

cusp (kusp),

n a notably pointed or rounded eminence on or near the masticating surface of a tooth.
cusp, angle,
cusp-fossa relations
n.pl the organic relations between a stamp cusp and its fossa.
cusp height,
n the shortest distance between the deepest part of the central fossa of a posterior tooth and a line connecting the points of the cusps of the tooth.
cusp, shoeing,
cusp, talon,
n an extra well-defined cusp that may be found on the lingual surfaces of the anterior teeth.
cusp tips,
n the points on the occlusal surface of the molars, premolars, or canines that are used for tearing or chewing.

cusp

a pointed or rounded projection, such as on the crown of a tooth, or a segment of a cardiac valve.

semilunar cusp
any of the semilunar segments of the aortic valve or the pulmonary valve.
References in periodicals archive ?
The teeth of Protacrodus aequalis include two morphotypes: one with a symmetrical crown and equal cusps, and the other with an asymmetrical, inclined crown and a higher central cusp (Turner 1982; Ivanov 1996; Ivanov & Lucas 2011).
Caption: Left: During intensive observations in 1800-01, Johann Schroter found that the southern cusp of Mercury (at bottom) occasionally appeared blunted.
The association of small VSD with more severe aortic valve disease may explain Venturi effect as the predominant mechanism behind cusp prolapse.
18 This is in contrast to prosthetic dentistry where the curve begins from cusp tip of mandibular canine and follows the buccal cusp tips of posterior teeth.
Keywords: Crown dimensions, Functional cusps, Iwanson guage.
The lengths of right and left atrioventricular valvular cusps were also measured.
Table II: Showing the position of Coronary Ostia in relation to the Upper margin of cusps Position Right Left No.
Talon cusp may occur either alone or along with other anomalies like mesiodens, odontome, unerupted or impacted teeth, peg shaped maxillary incisors, dens invaginatus, cleft lip and disordered nasal alae, gemination, fusion and supernumerary teeth.
Concerning the layered fold, which describes the way in which the meso-lingual cusp is directed toward the central fossa of the temporary and permanent lower molars, a high frequency in both dentitions is reported with bilateral symmetry and no sexual dimorphism.
In order to establish biological affinity with world human populations, African populations, and afrodescendant American and Colombian populations, a distance matrix was performed obtaining a dendogram which allowed calculating macroevolutive biological relations among the sample, based on geographical, sociocultural, and biological models of distribution and behavior of population groups different to the frequency of these CMDTs: incisors in shovel, Carabelli's cusp, cusp pattern, protostylid, cusp 6, and cusp 7.
CUSP is an applied science research institute led by New York University, along with Carnegie Mellon University, The City University of New York, The Indian Institute of Technology, in Bombay, and The University of Toronto, alongside Warwick.