[The morphofunctional characteristics of the blood supply to the oral mucosa in the absence of teeth and their prosthesis].

Morphofunctional features of blood supply to the buccal mucosa were studied by rheography, polarography, light and electron transmission microscopy and stereo-morphometry in patients with partial adentia and after they were fitted with prostheses. Adentia changed the functional parameters, this being indicative of reduced circulation. Morphologically it manifested by microvessel stasis, red cell sludging, stromal edema and polymorphonuclear infiltration.

[Interaction of indigenous parietal microorganisms with cells of the digestive tract mucosa].

By means of light, electron microscopy and stereomorphometry the interaction of microorganisms (MO) and cells of the mouth, stomach and gut mucous membrane was studied in different pathologic conditions on clinic and experimental material. No penetration was noted of MO into cells of the keratinized squamous epithelium, they were present in intercellular spaces. In the stomach, MO as a rule interact with mucocytes altering their surface.

[The morphological characteristics of the interaction of parietal microflora with the mucosal epitheliocytes of the alveolar crest in patients with partially missing teeth].

Microbiopsy specimens of the alveolar ridge obtained at the sites of missing teeth from patients and similar autopsy specimens from those dead without apparent oral and gastrointestinal diseases were examined electron microscopically in order to elucidate the interactions between the oral mucosa parietal microflora and epitheliocytes. Cocci-like microorganisms and microorganisms resembling Candida-like yeast by their ultrastructure were as a rule seen on the surface of the horny layer. The results evidence that loss of teeth involves the appearance of quite a number of various parietal bacteria in the oral mucosa, inducing characteristic changes in the pricky and horny layer cells.