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57 Cards in this Set

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Incisiors function
The incisors are shearing or cutting teeth.
most prominent teeth in the mouth
maxillary central incisors
vary in form more than any other tooth in the mouth except the third molar
Maxillary lateral incisors
o The lateral maxillary incisor is smaller than the central maxillary incisor in all dimensions, except
root length
widest mesiodistally of any of the anterior teeth
• The maxillary central incisor
labial curvature of crown face of max central incisor compaired to others
• The labial face of the central incisor is less convex than the maxillary lateral incisor or canine, which gives the central incisor a rectangular appearance
sides of max central incisor
mesial straight with root and distal is more curved
Mesial and distal incisal angles of max central incisor
o The mesial incisal angle is relatively sharp, the distal incisal angle rounded.
Bisecting line of maxillary central and lateral incisors
 The incisal ridge of the crown is therefore on a line with the center of the root
lingual lobe of anterior teeth
• Cingulum
bulk of the cervical third of the lingual surface of anterior teeth
Cingulum
mound or elevation on the crown of a tooth forming a divisional portion of the occlusal surface
 Cusp
Max Central incisor-• Between the marginal ridges, below the cingulum, a shallow concavity is present called the ?
lingual fossa
Lingual Aspect of Maxillary Central Incisors: extend from the cingulum inso the lingual fossa
developmental groves
Lingual Aspect of Maxillary Central Incisors: • The crown and root taper
lingually
Mesial Aspect of Maxillary Central Incisors
Mesial Aspect of Maxillary Central Incisors • The cervical line outlining the cementoenamel junction curves which way
) mesially on the maxillary central incisor curves incisally to a noticeable degree more so than on the distal
the incisal curve of the CEJ is greater on which side on most teeth, mesial or distal
mesial
max central incisor shape of root apex
blunt
peg-shaped laterals
maxillary lateral incisors with a nondescript, pointed form
Labial Aspect of Maxillary Lateral Incisors: • Labial aspect of maxillary lateral incisor resembles the central incisor except that it
has more curvature, incisal ridge is rounded and rounded inicisal angles mesially and distally
Labial Aspect of Maxillary Lateral Incisors: size compaired to central
2mm smaller
Labial Aspect of Maxillary Lateral Incisors: root to crown ratio
longer root to crown ratio. About 1.5
Lingual Aspect of Maxillary Lateral Incisors: cingulum
not prominent
Lingual Aspect of Maxillary Lateral Incisors: develepmental grooves
a deep developmental groove at the side of the cingulum, usually on the distal side, which may extend up on the roof for part or all of its length
Lingual Aspect of Maxillary Lateral Incisors: bisecting line
go through incisal edge and root apex
Lingual Aspect of Maxillary Lateral Incisors: lingual fossa
more concave and circumscribed that that found on the central incisor
Mesial Aspect of Maxillary Lateral Incisors: cervical line height compaired to distal
very steep, 1mm taller
Mesial Aspect of Maxillary Lateral Incisors:
Mesial Aspect of Maxillary Lateral Incisors:
Mesial Aspect of Maxillary Lateral Incisors:
mandibular incisors - mesiodistal dimensions
smaller than any other teeth
central or lateral mandib incisor larger?
• The (mandibular) central incisor is somewhat smaller than the (mandibular) lateral incisor, which is the reverse of the situation of the situation on the maxilla.
smallest tooth in the dental arches
• Mandibular central incisor
mandib central incisor vs. max in root length
same if not longer
Labial Aspect of Mandibular Central Incisor apical third of root
tilt to the distal
• The labial face of the mandibular central incisor crown
normally smooth, with a flattened surface at the incisal third; the middle third is more convex, narrowing down to the convexity of the root at the cervical portion
central incisors and developmental lines
rarely seen
MANDIBULAR CENTRAL INCISOR: Facial - The incisal outline
straight and perpendicular to the long axis
MANDIBULAR CENTRAL INCISOR: Facial - mesial and distal incisal angles
almost 90o
MANDIBULAR CENTRAL INCISOR: Facial - mesial and distal heights of contour
"near the incisal angle in the incisal 1/3 (highest
MANDIBULAR CENTRAL INCISOR: Facial - Crown tapers
gently to the cervical
MANDIBULAR CENTRAL INCISOR: Facial - convexity
1/3 of the crown is convex, while the remaining 2/3 is relatively flat
MANDIBULAR CENTRAL INCISOR: Facial - Root tapers
evenly to a sharp apex
MANDIBULAR CENTRAL INCISOR: Facial - root length vs max
"Root length is almost as long as the maxillary incisors, but it is still the shortest root in the
MANDIBULAR CENTRAL INCISOR: LINGUAL - come together forming a shallow lingual fossa
The cingulum, MMR, DMR, and incisal ridge
MANDIBULAR CENTRAL INCISOR: LINGUAL - The cingulum location
centered and is the center of calcification for the 4th lobe
MANDIBULAR CENTRAL INCISOR: LINGUAL - The tooth tapers to the
lingual
MANDIBULAR CENTRAL INCISOR: MESIAL - Wider __ than __
Wider F/L than M/D
MANDIBULAR CENTRAL INCISOR: MESIAL - The facial surface shape
"is flat and forms a straight line from the height of contour to the incisal
MANDIBULAR CENTRAL INCISOR: MESIAL - Facial and lingual height of contour is in the
cervical 1/3 and, as usual, is .5 mm
MANDIBULAR CENTRAL INCISOR: MESIAL - The incisal edge location F/L
"lingual to a bisector, allowing the tooth to sit behind the maxillary
MANDIBULAR CENTRAL INCISOR: MESIAL - CEJ is curved
more than any other mandibular tooth (as much as 1/3 of the crown)
MANDIBULAR CENTRAL INCISOR: MESIAL - Root maintains its width for
for 2/3 of the length and then tapers to a blunt apex.
MANDIBULAR CENTRAL INCISOR: MESIAL - Root morphology
Developmental depression in upper 2/3 of the root
MANDIBULAR CENTRAL INCISOR: INCISAL - incisal ridge F/L
lingual to the center, therefore more facial surface is visible
MANDIBULAR CENTRAL INCISOR: LINGUAL - The tooth tapers to the
lingual