Maxillary central incisor
Definition
They are two in number
Occupy either side of midline
Most prominent teeth
Great esthetic value
Larger in all dimensions than lateral incisor
Labial aspect
The side facing the lip is called labial aspect
Crown
It is trapezoidal in shape
Slight cervical convergence
Cervicaloincisal length is 2mm more than the mesiodistal
Outlines
Mesial outline is slightly convex with contact area at third incisal third close to meiso-incisal
angle
Distal outline is more convex than mesial outline, contact area is close to middle and incisal
one third
Cervical outline is semicircular with curvature towards the root
Incisal outline is represented by incisal edge which is straight and regular with sharp meiso-
incisal angle and slightly rounded disto-incisal edge
Labial surface
It is smooth with convexity at cervical third
Surface becomes relatively flat as the incisal edge is approached
Two vertical depressions are seen on the labial surface which represents three different lobes
Root
Conical shape, broader at 1/3rd
Relatively blunt apex
Distal tilt is seen
