3.6 POJA-L105. Cross-section of tooth in alveolar bone

3.6  POJA-L105

Title: Cross-section of tooth in alveolar bone

Description:
Stain picric acid-hematoxylin, cat.  From left to right:

• Periodontal ligament with blood vessels (yellow).
• Acellular cementum (dark purple rim).
• Dentin with radiair arrangement of dentinal tubules; fine incremental (imbrication) lines of von Ebner run at right angles to these tubules. These lines represent diurnal alterations in calcification and orientation of collagen and indicate growth pattern of dentin.
• the dark concentric zone near the pulp consists of secondary dentin.
• pulp chamber with irregular layer of odontoblasts (dark nuclei) and some pulp connective tissue.

3.6  POJA-L108

Title: Dentin in longitudinal section of tooth

Description:
Stain hematoxylin-eosin, human adult. Cross-sectioned dentinal tubules demonstrate:

• A light stained centre with the odontoblastic process (Tomes’ fiber).
• Darker stained peritubular dentin (highly mineralized), also called Neuman’s sheath.

Intertubular dentin (less mineralized) is present between the tubules. ​
​3.6  POJA-L141

Title: Dentinal tubules in cross-section of tooth

Description:
Thin ground section, polarizing microscopy (optical axes of the polarizing plates are crossed at 60°), human adult.   
Close to the dentinoenamel junction, slightly oblique section shows dentinal tubules depicted by brown-stained hollow fiber-like  structures containing odontoblastic processes (Tomes’ fibers) in a semi-three dimensional way. Numerous fine secondary branches of these processes are anastomosing with those of neighbouring tubules.

3.6  POJA-L158                       

Title: Dentinal tubules  in longitudinal section of tooth

Description:
Thin ground section, polarizing microscopy (optical axes of the polarizing plates are crossed at 60°), human adult.     
Slightly oblique section shows near the dentionenamel junction dentinal tubules depicted by brown-stained hollow fiber-like containing odontoblastic processes (Tomes’ fibers) in a semi-three dimensional way (“stubble-field” aspect). Darker stained clusters represent anastomosing secondary branches (comparable  with POJA-L141).

3.6 POJA-L106. Dentinal tubules in cross-section of tooth

​3.6  POJA-L106

Title: Dentin in cross-section of tooth

Description:
Stain hematoxylin-eosin, human adult.  Longitudinally sectioned dentinal tubules are parallely arranged, and numerous side branches are visible.

​KeywordsMesh: oral cavity, mouth, tooth, periodontal ligament, cementum, dentin, dentinal tubule, Tomes' fiber,  incremental line, odontoblast, von Ebner, histology, POJA  collection

3.6 POJA-L108. Dentin in longitudinal section of tooth

3.6 POJA-L141. Dentinal tubules in cross-section of tooth (polarizing microscope)

3.6 POJA-L158. Dentinal tubules in longitudinal section of tooth

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