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Questions and Answers
How much do the cervical outlines curve incisally?
What is unique about the cervical outline curves?
How do the distal and mesial outlines compare?
What aspect of the tooth is being described?
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Which of the following is true about the cervical outline?
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What can be said about the outline of the tooth?
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Study Notes
Maxillary Central Incisor
- Has a square or rectangular appearance
- Mesial outline is straight, while distal outline is rounded
- Mesio-incisal angle is sharp, and disto-incisal angle is rounded
- Mesial outline is slightly convex with a crest of curvature near the mesio-incisal angle
Incisal Aspect
- Lingual portion of the incisal ridge is present
- A shallow concavity called the "lingual fossa" is present between the incisal ridge, marginal ridges, and cingulum
- Lingual fossa usually has developmental grooves
Mesial Aspect
- Crown is triangular in shape, with the base at the cervix and the apex at the incisal ridge
- A line that bisects the crown will bisect the root
- Cervical outline curves incisally more than any surface on any tooth, about 3-4 mm
Distal Aspect
- Little difference between distal and mesial outlines
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Description
Identify the characteristic features of a maxillary central incisor, including its shape, outline, and angles. Learn about the distinct features of this tooth in dental anatomy.
