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salivary buffers & dilution protective

active plaque acid production

where in the fissure does the caries lesion begin?

sugars do not diffuse this far through fissure plug

the fissure brings surface of tooth closer to DEJ it does not take long for the lesion to reach dentin

because of enamel rod direction, lesion develops cone shape pointing toward surface of tooth

incipient fissure caries is not clinically detectable

THE “STICK” OR “CATCH”

?

ground

intact

section

surface

incipient

  • ssure

caries lesion

body of lesion

dark zone

translucent zone

X36

Cone shape demonstrates inuence of enamel rod direction

10

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