Where is the enamel the thinnest?

The enamel is thinnest at the cementoenamel junction (CEJ). This area marks the transition between the enamel covering the crown of the tooth and the cementum covering the root. Due to the developmental process of teeth, enamel is generally less thick at this junction compared to other areas.

Enamel thickness tends to vary across the tooth structure. At cusp tips, enamel is usually thicker, designed to withstand the forces of chewing. The central grooves in molars also have a significant thickness to resist wear from occlusal forces. In contrast, the contact areas, where teeth touch each other, typically have thicker enamel as well, promoting strength and durability in these regions.

Being aware of the structural differences in enamel across the tooth helps in understanding its function and durability, particularly in relation to dental treatment and preventive care.