Anatomy - Chapter 11 Flashcards
Line angle
junction of two tooth surfaces walls
lingual surface or palatal surface
the surface of mandibular and maxillary teeth closest to the tongue
linguoversion
position in which the maxillary incisors are behind the mandibular incisors
malocclusion
deviating from normal occlusion
mandibular
lower jaw
maxillary
upper jaw
mesial surface
surface of the tooth toward the midline
mesioclusion
term used for class 3 malocclusion
mesiodistal divison
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 (horizontally) of the root or crown in the middle
mixed dentition
a mixture of permanent teeth and primary teeth that occurs until all primary teeth become lost (usually between ages 6-12)
Nasmyth’s membrane
residue from epithelial tissue on the crowns of newly erupted teeth that may become extrinsically strained
neutroclusion
The molar relationship is normal but individual teeth or groups of teeth are out of position ideal mesiodistal relationship between the jaws and the dental arches
occlusal surface
the chewing surface of posterior teeth
occlusion
natural contact of the maxi and mandi 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
succedaneous
permanent teeth that replace primary teeth
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 occulsion
maximum contact between the occluding surfaces of the maxi and mandi teeth
cervical third
division of the root nearest the neck of the tooth
concave
curved inwards
curve of Spee
curvature formed by the maxi and mandi arches in occlusion
curve of Wilson
cross-arch curvature of the occlusal plane
deciduous
pertaining to the 1st dentition of 20 teeth (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 2 malocclusion in which the mesiobuccal cusp of of the maxi first moral occludes mesial to the mesiobuccal grove of the mandi first molar
facial surface
tooth surface closed to the face (labial and buccal surfaces)
functional occlusion
contact of 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 maxi incisors over the mandi incisors
