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Dental Anatomy
Sem 1 and Sem 2
42
Other
08/29/2011

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Term
Amalgam
Definition
mixture of one or more metals with mercury. In dentistry it refers to a mixture of silver ally and mercury which is used as a restrative material
Term
anneal
Definition
1. to soften a casting by controlled heating and cooling
2. the process f degassing pure gold to allow it to be cold-welded
Term
Anatomic Matrix
Definition
artificial wall fabricated usually from a thin strip of metal and shaped to duplicate the contour of a tooth having a portion missing because of cavity preparation. Serves as a wall to retain restorative material during the time it is condensed into the cavity until it hardens and the matrix is removed
Term
anterior teeth
Definition
canine to canine. used to identify the six front teeth of the upper and lower jaws, it includes the cuspids, lateral incisors and central incisors.
Term
button
Definition
excess metal remaining after a dental casting has been made. The entire casting consists of the inlay, only or a crown itself, a sprue, which is between the inlay and the buttn, and the button.
Term
cap
Definition
restoration that covers all exposed surfaces of a tooth. This is generally a lay term
Term
crown
Definition
restoration that covers all exposed surfaces of a tooth. 2) the anatomic crown of a tooth is the portion of the tooth above the cervical line. 3. the clinical crown is the portion of the tooth above the gingival tissue
Term
filling
Definition
any material used to fill a void in any surface of a tooth whether temporary or permanent.
Term
interproximal
Definition
between the proximal surfaces of adjoining teeth
Term
mandibular arch
Definition
arch like arrangement of the teeth and their supporting structures of the lower jaw
Term
operative
Definition
refers to operative dentistry which is that field of dentistry concerned with operations upon natural teeth for the repair of damage inflicted by caries, injuries, or malocclusion so that the teeth are restored to proper form, function and health.
Term
posterior teeth
Definition
general term used to identify all teeth located distal to the cuspids and includes the bicuspids and molars.
Term
buccal
Definition
surface of a posterior tooth nearest to the cheek.
Term
distal
Definition
away from the midline of the dental arch
Term
facial
Definition
outer surfaces of the teeth. includes labial and buccal surfaces
Term
incisal edge
Definition
cutting edge of an anterior tooth
Term
labial
Definition
surface of any anterior tooth nearest the lip
Term
lingual
Definition
surface of any tooth nearest the tongue
Term
mesial
Definition
toward the midline of the dental arch. That surface of any tooth closest to the midline.
Term
occlusal
Definition
toward the point of closure of teeth in opposite arches. The surface of posterior teeth that meet in closure with the same surfaces of teeth in the opposite arch
Term
pit
Definition
a sharp pointed depression in the enamel usually the junction of two fissures
Term
proximal
Definition
one of the surfaces of a tooth either mesial or distal which lies next to an adjacent tooth
Term
apical
Definition
in a direction toward the apex or tip of the roots of a tooth
Term
class I
Definition
cavities beginning in a structure defects of the teeth such as pits or fissured grooves. can be buccal, lingual, occlusal.
Term
class II
Definition
cavities in the proximal surfaces of posterior teeth
Term
class II
Definition
cavities in proximal surfaces of anterior teeth
Term
class IV
Definition
cavities in the proximal surfaces of anterior teeth that do not involve the incisal angle
Term
class V
Definition
cavities in the gingival third of a facial or lingual surfaces of any tooth. no pit cavities
Term
class VI
Definition
cavities on the incisal edges or the cusp tips of the teeth
Term
dovetail
Definition
widened or fanned-out portion of a cavity preparation established to increase retention and resistance form.
Term
isthmus
Definition
central portion f the cavity preparation on the occlusal surface of a bicuspid or molar. In a class I preparation, the isthmus is located between the mesial and distal dovetails. In a class II preparation the isthmus is between two proximal flares or one proximal flare and dovetail.
Term
undercut
Definition
any portion of a cavity preparation in which the walls converge towards the surface. for cavity preparations made to contain silver amalgam and various plastic restorative materials.
Term
margin
Definition
junction of the walls of a cavity with the surface of the tooth
Term
enamel
Definition
white, hard mineralized tissue covering the dentin of the anatomical crown of the tooth.
Term
fissure
Definition
occur along the lines of developmental grooves. faults caused by imperfect joining of enamel of the different lobes.
Term
dentin
Definition
a hard tissue which forms the main body of a tooth. it surrounds the pulp and is coverd by enamel or cementum
Term
cementum
Definition
bone-like tissue covering the anatomical roots of the teeth
Term
pulp
Definition
soft tissue covered by dentin occupying the pulp chamber and pulp canals of teeth
Term
pulp chamber
Definition
enlarged portion of the pulp cavity lying in the central part of the crown
Term
pulp canal
Definition
part of pulp cavity extending into the tooth root
Term
cemento enamel junction
Definition
circumferential area around a tooth where the cementum and the enamel meet. also called the cervical line.
Term
dentino enamal junction
Definition
line of meeting between the dentin and enamel