Surface
zone
Plaque
pH drops due to acid formation.
Sugar
diffusion into plaque.
H+
are produced and results in diffusion through the plaque into the enamel.
Sugar
Sugar
Body
of lesion
The
H+ results in Ca++ and HP04= dissolution from the crystals. The reulting
higher levels of free Ca++ and HP04= pushes these ions into the pellicle/plaque
compartments.
pH
drop
Cross-section of white spot enamel lesion.
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