Terminology Flashcards
Cusp
A pointed or rounded elevation of enamel found on canines and on the chewing surfaces of premolars and molars.
Mand PM1
Buccal Cusp (Largest)
Lingual Cusp
Mand PM2
Buccal Cusp (largest)
Mesiolingual Cusp (largest linguo)
Distolingual Cusp
Max PM1 and PM2
Buccal Cusp
Lingual Cusp
Max M1
Distobuccal
Distolingual
Mesiobuccal
Mesiolingual (Largest)
Cusp of Carbelli
Mand M1
Mesiobuccal
Mesiolingual
Distobuccal
Distolingual
Distal
Max M2
Distobuccal
Distolingual
Mesiobuccal
Mesiolingual (largest)
Mand M2
Distobuccal
Distolingual
Mesiobuccal (can see down the most)
Mesiolingual
Ridge
A linear elevation. It starts at a point elevation and extends down the surface.
Cusp Ridge: Named for direction they go away from cusp tip
qMesial ridge
qDistal ridge
qBuccal ridge
q Lingual ridge
A ridge that angles towards the central groove is also called a triangular ridge
Marginal Ridge
Marginal ridge—A linear, rounded border of enamel that forms the mesial and distal margins of anterior teeth and the mesial and distal borders of occlusal surfaces on posterior teeth.
A linear elevation or elevated structure
Transverse Ridge
Union of buccal and lingual triangular ridges that cross the surface of a posterior tooth transversely (roughly 90 degrees to both the buccal and lingual tooth surfaces).
Oblique Ridge
The only tooth on which an oblique ridge is found is the maxillary molar.
Union between the triangular ridge of the distobuccal cusp and the distal cusp ridge of the mesiolingual cusp.
Mesial Proximal Ridge
On proximal surface
: An elevated structure in the occlusal one-half to one-third of the proximal surface of the crown
Mesial Proximal Concavity
: one depressed area
hash lines
Ridge is more occlusal than concavity
Plane
ÙA cusp normally has four planes.
ÙThese planes are named by the direction that they face:
q Mesiolingual plane
qDistolingual plane
qMesiobuccal plane
qDistobuccal plane
An area bounded by two linear depressions and two linear elevations
Pit
Small depression in enamel, usually located in a developmental groove where two or more enamel lobes are joined.
Usually found in the deepest area of a fossa
A pin or point-shaped depression
Central Pit
Mesial (Marginal) Pit
Distal (Marginal) Pit
Groove
Buccal developmental groove
Mandibular 1st molar has two developmental grooves in the buccal.:
Mesiobuccal Developmental Groove
Distobuccal Developmental Groove
Linear depression where the primary parts of a tooth crown come together.
Triangular Groove:
A triangular grooves is named by the direction that it angles away from the marginal pit.
Triangular Groove:
A triangular grooves is named by the direction that it angles away from the marginal pit. Starts in pit and angles twd the point angle
Crest of Contour of a Posterior Tooth
Crest of Contour of an Anterior Tooth
Cingulum
nCingulum - a large rounded elevation on the lingual surface of all permanent and deciduous anterior teeth.
nThe cingulum encompasses the entire cervical third of the lingual surface.
Fossa
nFossa - an irregular, usually rounded or triangular depression or concavity on the crown of a tooth. (Plural - fossae)
nThere is normally a rather large, shallow fossa on the lingual surface of anterior teeth.
Posterior teeth exhibit two or more fossae of varying size and shape on the occlusal surface
Triangular Fossa
Located adjacent to marginal ridges on the occlusal surfaces of posterior teeth.
A depressed area. It is bounded by two linear depressions and a linear elevation
Lingual Fossa
An irregular, rounded concavity bound by the mesial marginal ridge, distal marginal ridge, cingulum, and incisal edge of the lingual surface of an incisor tooth.
Embrasure
Triangular space diverging from the contacting proximal surfaces of two adjacent teeth.
Labial/Buccal
Lingual
The gingival embrasure is also known as the cervical embrasure or interproximal space.
Occlusal
