Body of the Lesion: The body of the incipient lesion is
the largest portion during the demineralizing phase, characterized by
varying pore volumes (5% at the periphery to 25% at the center).
Striae of Retzius: The striae of Retzius are well
marked in the body of the lesion, indicating areas of preferential mineral
dissolution. These striae represent the incremental growth lines of enamel
and are critical in understanding caries progression.
Caries Penetration
Initial Penetration: The first penetration of caries
occurs via the striae of Retzius, highlighting the importance of these
structures in the carious process. Understanding this can aid in the
development of preventive strategies and treatment plans aimed at early
intervention and management of carious lesions.
