No dentin is not vascular tissue. I think your question should possibly be is dentin vascular, as in does it have a blood supply. The answer is yes to a certain extent, althou
…gh the tissue type itself is a specialised, mineralised connective tissue. Although it is related to the pulp as they are both derived from the dental papilla. It is supplied nutrients through the odontoblast cell body layer which lines the interior of the pulp chamber through the odontoblastic processes (tomes fibers) that project from the cell bodies well into the dentinal layer. These processes are contained within the dentinal tubules. So although they are linked dentin itself is not described as a vascular tissue... but it is vascular compared to a tissue such as cementum which is avascular. (MORE) 
