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PubMed1975

[Vacuolisation of odontoblasts and regressive metamorphoses from viewpoint of pulp-dentin system function].

The authors, after presenting a critical definition of the problems dealt with in their present paper in addition to giving an evaluation there of from the point of view of a constant increase of knowledge, describe the biological functions of the cell with particular reference to the cell's vacuolar apparatus. They then characterize the pulpodentinal system, outlining the functional adaptation of the endodontal vascular apparatus in the light of intrascopic results, the clinical importance of which is discussed at length.

Adult↗
PubMed1979

[Autoradiographic study of the activity of odontoblasts and secretory ameloblasts in the rat incisor: changes induced by vinblastine].

An autoradiographic study conducted on the rat incisor showed the presence 4 hours after (3H) proline injection, of 25-30% of the grains on the secreting cells and 70 to 75% on the extracellular matrics. The simultaneous injection of vinblastine sulphate reversed these percentages to 75-80% on the cellular level and 25-25% on the matrics. The vinblastine therefore inhibited the secretory processes of these cell types. On the other hand, due to the alkaloid, the number of grains present increased over the ameloblasts and principally over the intercellular spaces. The effects of these secretion and permeability variations suggested that a flow of precursor rich material reached the epithelial layer whatever the state of ameloblast activity.

Ameloblasts↗