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Questions and Answers
How much do the cervical outlines curve incisally?
How much do the cervical outlines curve incisally?
- About 5-6 mm
- About 1-2 mm
- About 3-4 mm (correct)
- About 7-8 mm
What is unique about the cervical outline curves?
What is unique about the cervical outline curves?
- They curve more mesially than any surface on any tooth
- They curve more distally than any surface on any tooth
- They curve more incisally than any surface on any tooth (correct)
- They curve more labially than any surface on any tooth
How do the distal and mesial outlines compare?
How do the distal and mesial outlines compare?
- There is little difference between the distal and mesial outlines (correct)
- The mesial outline is more curved than the distal outline
- The distal outline is more curved than the mesial outline
- The distal outline is straighter than the mesial outline
What aspect of the tooth is being described?
What aspect of the tooth is being described?
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Which of the following is true about the cervical outline?
Which of the following is true about the cervical outline?
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What can be said about the outline of the tooth?
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.
