Analysis by Light, Scanning, and Transmission Microscopy of the Intima Synovial of the Temporomandibular Joint of Human Fetuses during the Development

Author:

Alvez Carlos Sabu12,Carvalho de Moraes Luis Otavio1,Marques Sergio R.1,Tedesco Roberto C.1,Harb Leandro J. C.2,Rodríguez-Vázquez Jose F.3,Mérida-Velasco Jose R.3,Alonso Luis Garcia1

Affiliation:

1. Departamento de Morfologia e Genética, Universidade Federal de São Paulo, 04023-900 São Paulo, SP, Brazil

2. Departamento de Morfologia, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil

3. Departamento de Anatomía y Embriología II, Universidad Complutense of Madrid, 28040 Madrid, Spain

Abstract

Objective. To characterize morphologically and ultrastructurally using light microscopy, the scanning electron microscopy and transmission electron microscopy the intima synovial of the temporomandibular joint (TMJ) of human fetuses between the 10th and the 38th week of development. Materials and Methods. The TMJ was dissected bilaterally in 37 human fetuses belonging to the Institute of Embryology of the University Complutense of Madrid and of the Federal University of São Paulo. Results. The outcome by light microscopy showed the morphology of the TMJ and that the formation of inferior joint cavity precedes the superior joint cavity and the presence of blood vessels in the synovial. Conclusion. By scanning and transmission electron microscopy we observed the presence of two well-defined cell types in the intima layer of synovial of the TMJ of human fetuses, macrophage-like type A cell and fibroblast-like type B cell, and the presence of the a third cell type, defined by the name of intermediate lining cell in the intima layer of the synovial.

Publisher

Hindawi Limited

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