Enamel lamellae
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Enamel Lamellae
Hypomineralized structures which extend from the dentinoenamel junction to the surface of the enamel. The enamel is the toughest human tissue. The major component of the inorganic part is hydroxyl apatite (90-92%). The organic part of enamel is formed by proteins, proteoglycans and lipoids, and represents only 1-2% of the entire weight. The organic components are organized, forming histological structures like enamel lamellae, enamel rods sheaths, enamel spindles and tufts. The lamellae confer elasticity to the enamel when exposed to lateral or tangential forces, or even torque. The lamellae are also considered pathways for the progression of dental caries.