3.6 POJA-L103. Pulpo-dentinal complex 1 in longitudinal section of the tooth

3.6 POJA-L109. Pulpo-dentinal complex 2 in longitudinal section of the tooth (secondary dentin)

3.6  POJA-L103 

Title: Pulpo-dentinal complex 1 in longitudinal section of the tooth

Description:
Stain hematoxylin-eosin, human adult. At the pulpo-dentinal border the peripheral pulp appears to be a specialized odontogenic region composed of odontoblasts, a cell-free zone and a cell-rich zone; from left to right:

• Dentin (note striation due to dentinal tubules).
• (uncalcified) Light-stained predentin. At the transition to dentin numerous small globular calcification areas (irregular and darker stained structures).
• Columnar odontoblasts (dark-stained nuclei) with their cytoplasmic extensions (so-called odontoblastic processes or Tomes’ fibers) running through the predentin.
• Remnants of the light stained cell-free zone of Weil between odontoblasts and pulp connective tissue.

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3.6  POJA-L109

Title: Pulpo-dentinal complex in longitudinal section of tooth (secondary dentin)

Description:
Stain hematoxylin-eosin, human adult.  From left to right:

• Dentinal tubules as fine striation in dentin.
• Vertical course of incremental lines (von Ebner).
• A darker stained broad zone of secondary dentin, it is formed after root completion. This dentin contains fewer tubules, is not formed uniformly and protects the pulp iin older teeth from exposure.
• Pulp chamber with crowding of odontoblasts close to secondary, newly formed dentin.
• Connective tissue in pulp chamber.

​​Keywords/Mesh: oral cavity, mouth, tooth, predentin, dentin, dentinal tubule, odontoblast, Tomes’ fiber, secondary dentin, pulp, histology, POJA collection
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