Types of Defects
Lip defects are classified by their depth and their size. Superficial defects involve the skin and vermilion, and leave the underlying muscles, nerves and arteries undisturbed. Deep/full thickness defects include the underlying muscles, primarily the orbicularis oris. The nerve and blood supply may also be affected if the defect is large. Regardless of the depth or size, a successful lip reconstruction considers the five principles and the effect that the reconstruction has on the surrounding tissue.
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