Resembles the maxillary central incisor, but on a _____ scale
On a smaller scale
The lateral is generally ______ tooth than the central
the lateral is generally more rounded than central
The maxillary lateral is longer ______ and narrower _______
longer incisocervically and narrower mesiodistally
maxillary laterals display ________ of any tooth, except _____
display greatest variation of any permanent tooth, except 3rd molars
Initiation of calcification
1 year
Completion of enamel
4-5 years
Erupts
8-9 years
Completion of root
11 years
Maxillary lateral incisor is the _____ permanent incisor to erupt
last permanent incisor to erupt
Labial View:
Mesial outline resembles ____ central incisor, but mesio-incisal angle is more _____
mesial outline resembles maxillary central incisor, but the mesio-incisal line angle is more rounded
Labial Views
Height of contour is where
incisal third
Labial View
Distal outline. More ______ than maxillary central incisor. The disto-incisal angle is noticeably more ______
more rounded than the maxillary centrals
the disto-incisal line angle is noticeably more rounded
Labial View:
Distal height of contour
height of contour is junction of incisal and middle thirds
Labial View
Incisal margin: Not as ____ as the maxillary central incisor, due to the greater _____of the 2 incisal angles. If mamelons present, most common is _____
not as straight as the maxillary central incisors, due to the greater rounding of the 2 incisal angles, if mamelons present, most common is 2
Labial View:
The labial surface is more ____
is more convex
Labial View
Labial developmental depressions and imbrication lines are _____
normally present
Labial View
The largest incisal embrasure exists between ____
maxillary lateral incisor and canine
Lingual View
the marginal ridges are the ______of any incisors
the marginal ridges are the most distinct of any of the incisors
Lingual View
the lingual fossa is the ______of the incisors
lingual fossa is most distinct of incisors
Lingual View
the crown's lingual surface has been described as markedly ____
concave
Lingual View
they are the anterior teeth most likely to have a lingual ____
a lingual pit
Lingual View
Linguogingival grooves and lingual pits more _______
common than any other incisors
Proximal View
the labial and lingual heights of contour are _____
in the cervical third
Proximal View
Crown outline- ______in shape
triangular in shape
Proximal View
the distal surface is _____ and more _____ than the mesial surface
the distal surface is smaller and more convex than the mesial surface
Incisal View
the crown resembels the maxillary central, but the ______ is more prominent
the cingulum is more prominent
Incisal View
the crown exhibits relatively more ______labially and lingually
more convexity
Incisal View
The crown outline may appear somewhat _____ in shape
rhomboidal
Root Structure
the root is wider ____ than _______
root is wider labiolingually than mesiodistally
Root Structure
the actual root length is the _____ or ____ than that of the central
the actual root length is actually same length or slightly shorter than that of the central
Root Structure
The cervical and mid-root cross sections are _____
ovoid
Variations and Anomalies
the lateral has more variation in ____ than any other tooth except ____
more variation in form than any other tooth except 3rd molars
Variations and Anomalies
What is congentially missing?
It is called agenesis, tooth bud does not form (missing a tooth)
Variations and Anomalies
Peg lateral is due to lack of development of the ______
lack of development of the mesial and distal portions of the crown
Variations and Anomalies
Linguogingival Fissure is a _____ which extends from the lingual pit down onto the ____ and sometimes the ____
a groove which extends from the lingual pit down onto the cingulum and sometimes the root.
(also called palatogingival groove)
Variations and Anomalies
Caries is often associated with the ____ and ____
associated with lingual pit and dens in dente
Variations and Anomalies
What is dens in dente?
an invagination of enamel and dentin into the tooths pulp cavity
the entrance site of the invagination is the lingual pit
literally means tooth within a tooth
Variations and Anomalies
these teeth frequently have an abnormal relationship and contact with ____
adjacent teeth in the same arch
Variations and Anomalies
Distorted crowns and unusual root ____
distorted crowns and unusual root curvature
Variations and Anomalies
Tubercle
elevated structure found on the incisal portion of the cingulum