[Structural organization of the microcirculatory bed of the primordia of human deciduous teeth].

By means of injection and noninjection techniques structural organization of microcirculatory bed in the deciduous (milk) teeth germs have been studied in human fetuses, newborns and children. A definite dependence of the angioarchitectonics on the developmental stage of every tooth has been stated. Morphological differentiation of separate parts of the microcirculatory ways in the dental papilla is connected with dentinogenesis, and in the dental saccule--with amelogenesis, periodontum and alveolar wall formation. Those dental germ zones which have a peculiar functional importance (peripheral parts of the dental papilla, dental saccule in the area of the epithelial dental organ) are characterized by the presence of certain structural-functional apparatuses which provide increasing contact areas between blood and the tissues. Intraorganic circulatory bed of the dental papilla consists of identically constructed vascular complexes. The conformity coefficient between the arteriolar inlet and the venular outlet of the dental papilla microcirculatory ways during dentinogenesis is between 0.16--0.3. It has been stated that devices regulating the blood stream in the deciduous tooth germs (anastomoses, sphincters, arcades, etc.) are forming during the antenatal and early postnatal periods.