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Vermillion border



The normally sharp demarcation between the red of the lip and the adjacent normal skin. The vermillion border is important in dentistry and oral pathology because it is used as a marker to detect pathology, such as in actinic cheilitis. It represents the change in epidermis from highly keratinized external skin to less keratinized internal skin.

 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Vermillion_border". A list of authors is available in Wikipedia.
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