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Dentinal Tubules
The concentration of dentinal tubules (A) in the mid region of the dentin layer is illustrated in this demineralized section. The tubules appear as clear (non-staining) areas, the odontoblast processes missing from most. Intertubular (circumpulpal) dentin (B) fills the space between tubules. When present, the processes appear as irregular dark purple staining lines (C). Compare the tubule density of dentin at this level with that in the next image - closer to the pulp-dentin interface.
Legend
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A - dentinal tubules |
C - odontoblast processes |
