What is dentin?
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Dentin is a vital component of human teeth, serving various functions such as supporting enamel, protecting the pulp from harmful stimuli, and participating in the dentin-pulp complex's defense mechanisms . It is a hierarchical material with micro-/nano-structures, primarily composed of collagen and hydroxyapatite crystals at different levels . Dentin's toughness is attributed to the combination of collagen fibers and hydroxyapatite crystals, with odontoblasts playing a crucial role in its formation . Dentin exhibits unique mechanical properties, behaving as a brittle solid under tension on a macroscopic scale and displaying viscoelastic characteristics at the microscopic level . Different parts of dentin may have distinct qualitative properties to meet specific requirements, such as mantle dentin, inter- and peritubular dentin, and pulp stones .
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|---|---|
| Dentin is the hard, hierarchically structured basis of human teeth, acting as a natural composite with a bioorganic matrix reinforced by collagen fibers and apatite crystallites. | |
| Dentin is the largest tooth component providing support to enamel, protecting the pulp, and participating in the dentin-pulp complex's defense. It contains growth factors and odontoblast processes within dentinal tubules. | |
| Dentin is a tough tissue supporting enamel, composed of collagen fibers and hydroxyapatite crystals. It is produced by odontoblasts and encloses the dental pulp, with various specialized forms existing. | |
1 Citations | Dentin is a hierarchical material in teeth, consisting of tubules, peritubular dentin, and intertubular dentin with collagen and hydroxyapatite crystals, contributing to its viscoelastic properties. |
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