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chapter 11

key terms

TermDefinition
Angle’s classification system developed by Dr. Edward H. Angle to describe and classify occlusion and malocclusion
anterior toward the front
apical third division of the root nearest the tip of the root
buccal surface tooth surface closest to the inner cheek
buccolingual division lengthwise division of the crown in a labial or buccolingual direction, consisting of the facial or buccal/labial third, middle third, and lingual third
centric occlusion maximum contact between the occluding surfaces of the maxillary and mandibular teeth
cervical third division of the root nearest the neck of the tooth
concave curved inward
contact area area of the mesial or distal surface of a tooth that touches the adjacent tooth in the same arch
convex convex curved outward
curve of Spee curvature formed by the maxillary and mandibular arches in occlusion
curve of Wilson cross-arch curvature of the occlusal plane
deciduous pertaining to the first dentition of 20 teeth; often called “baby teeth” or primary teeth
dentition natural teeth in the dental arch
distal surface the surface of the tooth distant or away from the midline
distoclusion class II malocclusion in which the mesiobuccal cusp of the maxillary first molar occludes mesial to the mesiobuccal groove of the mandibular first molar
embrasure triangular space in a gingival direction between the proximal surfaces of two adjoining teeth in contact
facial surface tooth surface closest to the face. Facial surfaces closest to the lips are called labial surfaces, and facial surfaces closest to the inner cheek are the buccal surfaces; therefore, the term facial can be substituted for labial and buccal, and vice versa
functional occlusion contact of the teeth during biting and chewing movements
incisal surface the chewing surface of anterior teeth
interproximal the space between adjacent tooth surfaces
labioversion the inclination of the teeth to extend facially beyond the normal overlap of the incisal edge of the maxillary incisors over the mandibular incisors
line angle junction of two tooth surface walls
lingual surface the surface of mandibular and maxillary teeth closest to the tongue; also called palatal surface
linguoversion position in which the maxillary incisors are behind the mandibular incisors
malocclusion occlusion that is deviated from a class I normal occlusion
mandibular arch lower jaw
maxillary arch upper jaw
mesial surface the surface of the tooth toward the midline
mesioclusion term used for class III malocclusion
mesiodistal division lengthwise division of the crown in a mesiodistal (front-to-back) direction, consisting of the mesial third, middle third, and distal third
middle third division of the root in the middle
mixed dentition a mixture of permanent teeth and primary teeth that occurs until all primary teeth become lost, usually between ages 6 and 12
Nasmyth’s membrane residue from epithelial tissue on the crowns of newly erupted teeth that may become extrinsically stained
neutroclusion ideal mesiodistal relationship between the jaws and the dental arches
occlusal surface the chewing surface of posterior teeth
occlusion natural contact of the maxillary and mandibular teeth in all positions
occlusocervical division crosswise division of the crown that is parallel to the occlusal or incisal surface, consisting of the occlusal third, middle third, and cervical third
permanent dentition set of 32 secondary teeth
point angle the angle formed by the junction of three surfaces
posterior toward the back
primary dentition first set of 20 primary teeth
proximal surfaces surfaces next to each other when teeth are adjacent in the arch
quadrant one quarter of the dentition
sextant one sixth of the dentition
succedaneums (suk-se-DAY-nee-us) teeth permanent teeth that replace primary teeth
Created by: Anacor0624
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