Morphohistochemical aspects of epitlzelium-mesem:hima -induction in dental crganogenesis

Authors

  • M. E. Gómez de Ferraris
  • M. M. Fonseca
  • H. Gendelman

Keywords:

Embryonic Induction, Organogenesis

Abstract

Chronologic sequences of dental organogenesis rnorphohistochernical characteristica

are described prior to appos:tional stage. They were the following:

1) Basal rnernbrane Fuchsin Aldehyde positive ( future arnelo-dentinal junc-tion).

2) Increase of cellu1ar layers-in intermediate stratum with metachromasia and alciar:ophilia in stellate reticulum.

3) Metachromasia and alcianophilia in papilla with differentiation of basophile odontoblasts on its periphery.

4) Alcianophile dentine deposit and PAS + with basophile ameloblasts polarity change and posterior secretion of adamantine matrix sligtly PAS +. Technical oxidai:ion variation with periodic acid during 10', Shiff reactive mbstance 15' and the posterior and inmmediate application of methenamine silver 1 hoUTat 609C allows to identify clearly ~reactive subst::mces to per;odic acid likeglucogene and basal memhrane reactive components

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Published

2019-05-02

Issue

Section

ARTÍCULOS