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Demineralized Cross Section of Dentinal Tubules
Dentin in this image has been demineralized prior to sectioning. Intertubular dentin (A) is the dark red staining material seen between tubules in this image. The pre-dentin (B) is light pink in this image. Note that intertubular dentin may also be circumpulpal or mantle dentin depending on its distance from the DEJ. Peritubular dentin is lost during demineral-ization because of its high mineral and very low collagen content. Consequently in demineralized sections, all of the dentinal tubules are approximately the same diameter. Contrast this with the last image which was a ground section where tubule size varied greatly as a result of the deposition of peritubular dentin around each odontoblast process.
Legend
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A - intertubular dentin |
B - predentin |
