Maxillary Incisors Flashcards
What is the general shape of maxillary central incisor?
trapezoid
How long is the crown of maxillary central incisor from incisal edge to gingiva?
10-11 mm
How wide is the maxillary central incisor at the widest point?
8-9 mm
How wide is the maxillary central incisor at the CEJ?
6-7 mm
Is the maxillary central incisor longer than it is wide?
yes
What is the height of convexity of the mesial surface of the maxillary central incisor?
incisal 1/3 of tooth
Where is the mesial contact of the maxillary central incisor?
incisal 1/3
What is the heigh of convexity of the distal surface of the maxillary central incisor?
junction of middle and incisal 1/3
Where is the distal contact of the maxillary central incisor?
junction of middle and incisal 1/3
What is mesioincisal angle of maxillary central incisor?
right angle
What is distoincisal angle of maxillary central incisor?
more rounded than mesioincisal
What is a line angle?
the meeting of two tooth surface
What is a point angle?
junction of three tooth surface
How many roots are there for a maxillary central incisor?
1
How long is the root of the maxillary central incisor?
13mm
Shape of the root of the maxillary central incisor:
cone shaped with blunt apex
What is a ridge?
linear elevation on the surface of the tooth and is named according to the location
Which direction does the root of the maxillary central incisor taper?
slightly distally
Shape of the maxillary central incisor from the mesial view:
triangular
The facial outline of the maxillary central incisor from the mesial aspect is…
slightly curved, flat incisally
The lingual outline of the maxillary central incisor from the mesial aspect is…
concavo-convex
Is the incisal edge in the midline of the maxillary central incisor?
yes
(sometimes can be slightly facial)
What is the greatest amount of curvature of any tooth in the mouth?
the mesial cervical line of the maxillary central incisor
Which direction does the incisal surface of the maxillary central incisor slope from the mesial view?
toward the lingual
What does the maxillary central incisor look like form the incisal aspect?
triangualr
Is the maxillary central incisor wider facially or lingually?
facially
Are the DF/MF or the ML/DL line angles more prominent on a maxillary central incisor?
DF/MF
Crown length of maxillary central incisor:
10-11mm
Crown width of maxillary central incisor:
8.5mm
Labiolingual width of maxillary central incsior:
7 mm
Root length of maxillary central incisor:
13 mm
How many lobes form the maxillary central incisor?
4
What does the mesial lobe of the maxillary central incisor form?
mesial marginal ridge and mesial part of labial surface
What does the distal lobe of the maxillary central incisor form?
distal marginal ridge and distal part of labial surface
What does the labial lobe of the maxillary central incisor form?
slightly prominent ridge
What does the lingual lobe of the maxillary central incisor form?
forms the cingulum
How many pulp canals of the maxillary central incisor?
1
How many pulp horns in a maxillary central incisor?
3
What numbers are the maxillary lateral incisors?
7 and 11
What tooth is the most various in size?
maxillary lateral incisor
What is the most frequently congenitally absent anterior tooth?
maxillary lateral incisor
What is the shape of the facial aspect of maxillary lateral incisor?
trapezoidal
Where is the mesial height of contour of the maxillary lateral incisor
junction of the middle and incisal 1/3
Is the mesioincisal angle of maxillary lateral incisors 90 degrees?
no, it is slightly more rounded
Where is the distal height of contour of the maxillary lateral incisors?
middle 1/3
What is the shape of the root of maxillary lateral incisors?
root is pointed, longer than central incisor root, and tapers distally
What is the shape of the maxillary lateral incisor from the lingual view?
trapezoidal
What is the shape of the maxillary lateral incisor from the mesial view?
triangular
What is the shape of the maxillary lateral incisor from the distal aspect?
triangular
How does the maxillary lateral incisor add to the arch?
the distal end is curved lingually to round in in the arch
Where is the crest of the cingulum of the maxillary lateral incisor?
slightly distal to the center of the tooth
Is the DL or ML line angle more rounded in the maxillary lateral incisor?
the DL line angle
How many pulp canals in maxillary lateral incisor?
1
How many pulp horns in a maxillary lateral incisor?
2
