Cariology

Question 1

What is a white spot lesion

Answer 1

Chalky white appearance due to increased porosity due to loss of mineral form the surface of the crystals
Clinically visible after 4 weeks
Hard to probe

Question 2

What happens under the microscope after 1 week of plaque presence

Answer 2

Increased surface porosity
Dissolution of perikymata
Enlarged intercrystalline spaces/pores

Question 3

What are liquefaction foci

Answer 3

Coalescing and broken down dentinal tubules
They fill necrotic debris
Increase in size by expanding causing adjacent tubules to distort

Question 4

What are dead tracks

Answer 4

Within the sclerotic zone
Form due to the dying back of the odontoblastic processes into their cell bodies