3.6 POJA-L101A nr. 8. Scheme survey tooth (longitudinal section)

 3.6  POJA-L101A nr. 8            

Title: Scheme survey tooth (longitudinal section)

Description:
Scheme canine tooth in osseous alveolus, human. Green parallelogram indicates dentin with Owen's line, dentinoenamel junction and enamel with incremental lines.

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​Keywords/Mesh: oral cavity, mouth, tooth, enamel, dentinoenamel junction, dentin, dentinal tubules, interglobular dentin, Retzius, pulp canal, histology, POJA collection

3.6 POJA-L104. Dentinoenamel junction in the tooth

3.6  POJA-L104

Title: Dentinoenamel junction in the tooth

Description:
Thin ground section of crown, human adult.  From left to right:

• Enamel with fine striation (composition of enamel rods or prisms); darker  zones almost perpendicular to the striation are the incremental lines (Retzius) due to successive apposition of layers of enamel as the crown is formed.
• Dentinoenamel junction is shown as a narrow fissure from top to bottom.
• Superficial dentin in the crown with S-shaped course of the dentinal tubules that passes uninterrupted through the irregular black structures (due to filling with air) representing  hypocalcified areas (interglobular areas of interglobular dentin). Mineralization of dentin starts in small globular areas  normally fusing in uniformly calcified dentin. If fusion does not take place hypomineralized regions remain between these  globular areas localized in line (Owen’s line).

 
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