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Questions and Answers
Which anatomical landmark is a midline shallow depression of the upper lip, starting at the labial tubercle and ending at the nose?
What is the little swelling in the midportion of the vermillion border of the upper lip called?
Which area of thinner epithelium marks the transitional zone between the skin and the mucous membrane of the upper and lower lips?
What is the furrow of variable depth that extends from the wing of the nose to end at some distance from the corner of the mouth called?
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Which anatomical features should be noted during extra-oral examination?
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vermillionBorder
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nasolabialGroove
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philtrum
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labialTubercle
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True or false: Denture bearing areas are not important for fabricating a complete denture with maximum retention, support, and stability?
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True or false: The vermillion border is a pink or red zone of thinner epithelium marking the transitional area between the skin and the mucous membrane of the upper and lower lips?
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True or false: The nasolabial groove extends from the ala of the nose to the corner of the mouth?
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True or false: The labial tubercle is a shallow depression of the upper lip that ends at the nose?
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True or false: The philtrum is a midline shallow depression of the upper lip, which starts at the labial tubercle and ends at the nose?
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Study Notes
Anatomical Landmarks of the Lip and Face
- The philtrum is a midline shallow depression of the upper lip, starting at the labial tubercle and ending at the nose.
- The labial tubercle is a little swelling in the midportion of the vermillion border of the upper lip.
- The vermillion border is a transitional zone between the skin and the mucous membrane of the upper and lower lips, marked by a zone of thinner epithelium.
- The nasolabial groove is a furrow of variable depth that extends from the wing of the nose to some distance from the corner of the mouth.
Importance of Anatomical Features in Denture Fabrication
- Denture bearing areas are important for fabricating a complete denture with maximum retention, support, and stability.
- During extra-oral examination, the following anatomical features should be noted: vermillion border, nasolabial groove, philtrum, and labial tubercle.
True or False Statements
- The vermillion border is a pink or red zone of thinner epithelium marking the transitional area between the skin and the mucous membrane of the upper and lower lips. (TRUE)
- The nasolabial groove extends from the ala of the nose to the corner of the mouth. (FALSE - it ends at some distance from the corner of the mouth)
- The labial tubercle is a shallow depression of the upper lip that ends at the nose. (FALSE - the philtrum is a shallow depression that ends at the nose, not the labial tubercle)
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Description
Test your knowledge of the anatomical landmarks of the upper and lower jaw in prosthodontics, including denture bearing areas and boundaries. This quiz covers important features for fabricating complete dentures with maximum retention and support.
