Pathology · single question

A bilateral white line along the occlusal plane of the buccal mucosa is:

  1. Linea alba
  2. Leukoedema
  3. Frictional keratosis
  4. Lichen planus
Show answer and explanation

Correct answer: A. Linea alba

  • A. Correct. Linea alba is a bilateral white line at the occlusal plane from cheek/tooth contact.
  • B. Leukoedema is a diffuse grayish-white film that disappears on stretching.
  • C. Frictional keratosis is a localized white patch from a specific irritant.
  • D. Lichen planus shows lacy Wickham striae, not a single occlusal-line.

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