Lesion or "microcavity" is the appearance of a
chalky
white
spot on the surface of the tooth,
indicating an area of demineralization of enamel.
Before the cavity forms the process is reversible,
but once a cavity forms the lost tooth structure
cannot be regenerated.
Toothache
worsen
with exposure to heat, cold, or
sweet foods and drinks.
Bad breath
and foul tastes.