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Questions and Answers
The root is 2-3 mm shorter than the crown.
False
The root has a pointed apex.
False
The root is cone shaped.
True
A line drawn through the center of the root and crown is perpendicular to the mesial outline of the crown and root.
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The mesial outline of the crown and root is parallel to the line drawn through the center of the root and crown.
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Study Notes
Incisor Crown Characteristics
- The incisal ridge makes up the complete incisal portion of the crown.
- The incisal edge forms when an angle is created by occlusal wear, resulting in a flattened surface linguo-incisally.
- Mamelons are present on the crown.
Outline of the Crown
- The mesial outline is slightly convex with a crest of curvature near the mesio-incisal angle.
- The distal outline is more convex than the mesial outline, with the crest of curvature at the junction between the incisal and middle thirds.
Root Characteristics
- The root is cone-shaped with a blunt apex.
- The root is 2-3 mm longer than the crown.
- A line drawn through the center of the root and crown tends to parallel the mesial outline of the crown and root.
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Description
Learn about the characteristics of the incisor crown, including the incisal ridge, incisal edge, and mamelons, as well as the outline of the crown. This quiz is ideal for dental students and professionals.
