Tooth enamel/dentin mineralization process

The **enamel/dentin mineralization process** is a tightly controlled developmental process where enamel and dentin—unique mineralized tissues of teeth—are formed in the crown and root, respectively. Enamel is created by ameloblasts secreting an extracellular matrix rich in proteins (like amelogenin, ameloblastin, enamelin, and tuftelin), which organize into mineral ribbons at the mineralization front above dentin[1][2][4][6]. These ribbons are elongated and mineralized mainly through deposition of hydroxyapatite, regulated by a host of specific biomolecules; in enamel, this is a non-collagenous process, while in dentin, odontoblasts secrete type I collagen and a complex of proteoglycans and phosphorylated proteins that serve as a scaffold for mineral deposition[1][3][4][5]. The process encompasses several tightly regulated steps, including: - **Matrix secretion** (by ameloblasts for enamel; odontoblasts for dentin) - **Matrix maturation** (regulated proteolytic degradation of organic proteins in enamel; ongoing matrix modification in dentin) - **Mineral crystal nucleation and growth** (involving hydroxyapatite and proteins/glycoproteins) - **Termination of mineralization** as the tooth erupts and cellular activity ceases[2][3][4][5] Defects or dysregulation in this process result in developmental dental diseases, most notably enamel or dentin hypoplasia and increased caries risk; once mature, loss of enamel is irreversible as the responsible cells are lost before tooth eruption[2][4][6]. **This entry is not a canonical molecular target but a biological process; molecular-level targets within this process include specific enamel and dentin proteins, proteases, and ion channels[1][3][5][6].**

Other names

Enamel mineralizationDentin mineralizationAmelogenesisDentinogenesisTooth mineralization