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Questions and Answers
What is the shape of the mesial surface?
What is the shape of the mesial surface?
- Roughly triangular
- Roughly trapezoidal (correct)
- Roughly rectangular
- Roughly circular
Which of the following surfaces has a wider cervical than occlusal portion?
Which of the following surfaces has a wider cervical than occlusal portion?
- Buccal surface
- Lingual surface
- Distal surface
- Mesial surface (correct)
What is the characteristic of the buccal and lingual surfaces in comparison to the mesial surface?
What is the characteristic of the buccal and lingual surfaces in comparison to the mesial surface?
- Narrower at the cervical than at the occlusal
- Narrower at the occlusal than at the cervical
- Wider at the occlusal than at the cervical (correct)
- Wider at the cervical than at the occlusal
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Study Notes
Occlusal Surface
- The occlusal half of the surface is convex, but with a buccolingual flattening or slight concavity located cervical to the contact area.
Distal Aspect
- The mesial cusp tips project beyond the outline of the distal cusps on the occlusal outline.
Mesial Aspect
- The mesial surface is roughly trapezoidal in shape, wider at the cervical end than at the occlusal end.
- This shape is opposite to the buccal and lingual surfaces.
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