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Length of junctional epithelium is:

 # Length of junctional epithelium is:
A. 0.25-1.35 mm
B. 0.5-0.75 mm
C. 1.0-2.0 mm
D. 1.0-1.5 mm


The correct answer is A. 0.25-1.35 mm.

Junctional Epithelium: The epithelium that attaches the gingiva to the tooth's surface, it consists of stratified squamous non-keratinizing epithelium. It is 3-4 layers thick in early life but the number of
layers increases with age to 10-20. It is thicker in the coronal portion but becomes thinner toward the cemento-enamel junction only a few cell layers. The length of the JE ranges from 0.25 to 1.35mm. 

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