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Dl 111/112
Dental anatomy, physiology and occlusion
38
Other
Undergraduate 1
10/03/2011

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Term
ANTERIOR
Definition
Central incisor, lateral incisors and canines of either upper or lower arch.
Term
BUCCAL
Definition
pertaining to the cheek, the surface of the tooth.
Term

CROWN THIRDS

 

Definition

cervical- 1/3

middle- 1/3

incisal-1/3

Term
CONTACT POINT
Definition
that point where the convex surface of two adjoining teeth touch, often used for contact area.
Term
CERVIX
Definition
NECK OF THE TOOTH
Term
cervical line
Definition
otherwise known as the cemento-enamel junction (cej) it is the line where the cementum and the enamel join.
Term
cingulum
Definition
that part of an anterior tooth which makes up the bulge of the cervical portion on the lingual surface.
Term
cusps
Definition
a cone shaped elevation on the occlusal surface of a molar or bicuspid and on the incisal edge of the cuspid
Term
developemental grooves
Definition
a groove formed by the union of a molar or bicuspid and on the incisal edge of the cuspid.
Term
distal
Definition
the side of a tooth farthest away from the median line in the ental arch
Term
embrasure
Definition
the space between two teeth created by the sloping away of the mesial and distal surface. (lingual, facial or buccal)
Term
facial
Definition
the surface of the tooth or appliance nearest the lips or cheeks.
Term
fissure
Definition
a fault in the surface of a tooth caused by the imperfect joining of the enamel of the different lobes.
Term
fossa
Definition
a rounded depression in the enamel of a tooth. it differs from a "pit", it is more shallow and rounded.
Term
gingiva
Definition
part of the gum tissue which immediately surrounds a tooth.
Term
interproximal
Definition
between adjoing tooth surfaces
Term
interproximal-space
Definition
space situated between two adjacent teeth.
Term
incisal
Definition
pertains to the cutting edge of the anterior teeth
Term
labial
Definition
pertaing to the lips, the surface of an anterior tooth opposite the lips
Term
lingual
Definition
pertaing to the tongue, the surface of a tooth or prosthesis next to the tongue is the ____ surface
Term
lobes
Definition
a segment from which a natural tooth develops
Term
mandible
Definition
lower jaw
Term
maxilla
Definition
upper jaw
Term
mesial
Definition
the surface of a tooth which in a normal occlusion is nearest the midline.
Term
marginal ridge
Definition
the elevations of enamel which form the mesial and distal margins of the occlusal surfaces of the bicuspids and molars and the mesial and distal margins of the incisors and cuspids on the lingual.
Term
occlusal surface
Definition
the biting, grinding or chewing surface of molars and bicuspids. contacting surfaces of opposing occlusal units.
Term
occlusion
Definition
the contact relation and interdigitation of the upper and lower teeth.
Term
oblique ridge
Definition
the transverse ridge of enamel which crosses the occlusal surface of the upper molars from mesio-lingual to distofacial.
Term
occlusal embrasure
Definition
the space which extends from the contact in an occlusal direction
Term
posterior teeth
Definition
premolars and molars or either jaw
Term
pit
Definition
a pointed depression in the surface of a tooth.
Term
proximal surface
Definition
the surface of a tooth which lies next to another tooth, nearly always the mesial or distal surface unless the tooth is rotated
Term
quadrant
Definition
one-fourth of the mouth, one-half of either arch.
Term
ridge
Definition
a liner elevation of enamel on the surface of a tooth. ex: marginal ridge.
Term
sulcus
Definition
a liner depression in the surface of a tooth, the surface of which meets at an angle, a ___ is always found along the surface of a developmental line.
Term
supplemental groove
Definition
(secondary groove) the small grooves on a tooth which do not mark the boundaries of the lobes are called ________ or accessory grooves.
Term
transverse ridge
Definition
the ridge of enamel formed at the junction of a buccal and lingual and the occlusal surface of a molar or bicuspid.
Term
triangular ridge
Definition
the ridge of enamel which extends from the tip of the cusp down onto the occlusal surface of bicuspids and molars.
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