[PD- TEST] Do Teeth Keep Time? Why Circadian Alignment Shapes Tooth Architecture

Why Circadian Alignment Shapes Tooth Architecture

Extraordinary hardness is never just an accident of chemistry. It’s a triumph of timing, biological craftsmanship unfolding in rhythm.

Nature builds its strongest structures in cycles: tree rings, tidal bands, nacre layered inside an oyster. Enamel follows the same rule. Each day, it forms microscopic rings and layers, a pattern that led scientists to search for the timing system behind tooth development. They found a clock.[1][2]

Enamel is, in many ways, human nacre: ultra-thin mineral lamellae laid in order, cleared in sequence, and set according to time.