Digital Histology
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Demineralized (decalcified) sections show odontoblasts in the pulp adjacent to the dentin. Odontoblast processes extend into dentinal tubules composed of dentin matrix. Dentin matrix is formed as odontoblasts secrete predentin, the organic matrix of dentin, that is later mineralized. Dentin forms continuously throughout life, beginning at the dentino-enamel junction and proceeding toward the pulp. 200x

Pulp > <p>Pulp, forming the central core of the tooth, is composed primarily of loose connective tissue that contains an extensive vascular supply and nerve plexus.  Odontoblasts line the pulp cavity and produce dentin.  Processes extend from the odontoblasts through dentinal tubules toward the enamel or cementum.</p>

Pulp >

Pulp, forming the central core of the tooth, is composed primarily of loose connective tissue that contains an extensive vascular supply and nerve plexus.  Odontoblasts line the pulp cavity and produce dentin.  Processes extend from the odontoblasts through dentinal tubules toward the enamel or cementum.
- Odontoblasts <p>Pulp, forming the central core of the tooth, is composed primarily of loose connective tissue that contains an extensive vascular supply and nerve plexus.  Odontoblasts line the pulp cavity and produce dentin.  Processes extend from the odontoblasts through dentinal tubules toward the enamel or cementum.</p>

- Odontoblasts

Pulp, forming the central core of the tooth, is composed primarily of loose connective tissue that contains an extensive vascular supply and nerve plexus.  Odontoblasts line the pulp cavity and produce dentin.  Processes extend from the odontoblasts through dentinal tubules toward the enamel or cementum.
Predentin > <p>Dentin is deposited similarly to bone: organic matrix (predentin), deposited first, provides a framework on which hydroxyapatite is laid down to form dentin.  Dentin deposition surrounds long processes of odontoblasts, forming dentinal tubules.  Dentin formation begins at the dentino-enamel junction and proceeds into the pulp, decreasing the volume of pulp as it does so.</p>

Predentin >

Dentin is deposited similarly to bone: organic matrix (predentin), deposited first, provides a framework on which hydroxyapatite is laid down to form dentin.  Dentin deposition surrounds long processes of odontoblasts, forming dentinal tubules.  Dentin formation begins at the dentino-enamel junction and proceeds into the pulp, decreasing the volume of pulp as it does so.
Dentin <p>Dentin is deposited similarly to bone: organic matrix (predentin), deposited first, provides a framework on which hydroxyapatite is laid down to form dentin.  Dentin deposition surrounds long processes of odontoblasts, forming dentinal tubules.  Dentin formation begins at the dentino-enamel junction and proceeds into the pulp, decreasing the volume of pulp as it does so.</p>

Dentin

Dentin is deposited similarly to bone: organic matrix (predentin), deposited first, provides a framework on which hydroxyapatite is laid down to form dentin.  Dentin deposition surrounds long processes of odontoblasts, forming dentinal tubules.  Dentin formation begins at the dentino-enamel junction and proceeds into the pulp, decreasing the volume of pulp as it does so.
- Dentinal tubules <p>Dentin is deposited similarly to bone: organic matrix (predentin), deposited first, provides a framework on which hydroxyapatite is laid down to form dentin.  Dentin deposition surrounds long processes of odontoblasts, forming dentinal tubules.  Dentin formation begins at the dentino-enamel junction and proceeds into the pulp, decreasing the volume of pulp as it does so.</p>

- Dentinal tubules

Dentin is deposited similarly to bone: organic matrix (predentin), deposited first, provides a framework on which hydroxyapatite is laid down to form dentin.  Dentin deposition surrounds long processes of odontoblasts, forming dentinal tubules.  Dentin formation begins at the dentino-enamel junction and proceeds into the pulp, decreasing the volume of pulp as it does so.
Main SlidePulp > - OdontoblastsPredentin >Dentin - Dentinal tubules