Subject of investigation: morpho-functional specificity of interaction between soft and solid frames of a cog of the person and pathogenetic aspects of a caries. Objectives: on boundary light and submicroscopy to present frame of interhistic relationships of cogs and to establish character of their changes at a carious lesion. Methods of investigation: histological, histochemical, microscopic and scanning submicroscopy. Alongside with it, utilised in essence new, designed by us the method of preparation is intravital of safe cogs for multi-purpose morphological researches of solid and soft tissues of a cog. Theoretical and practical value of the obtained findings: For the first time designed by us the exhaust-and-forced method of preparation is intravital of safe cogs for multi-purpose morphological researches opens new perspectives for analysis of a spatial pattern of solid tissues of a cog in the norm and at their lesion as a result of miscellaneous pathological processes. It is useful to take into account the facts, established by us, of a penetration of walls dentinal canals, absence of their lateral bifurcation, and also postulation of availability in a dentine of pyramid-shaped zones in practice of a clinical odontology at realization of appropriate manipulations during treatment of a caries. Scientific novelty of the obtained results: the methodological approach, utilised in activity, and the appropriate methods have ensured a number of the priority data. The installation of a porous constitution of walls dentinal canals due to availability in them calcified of zones, isolated concerns to most relevant of them with us under a title of penetratic locuses, with the help which one the diffusion of nutrient materials from lumens dentinal canals in intertubular a dentine implements. The analysis production half-thin of shears has allowed to deny existing performance about availability of side branches dentinal canals. Actually them imitate calcificated bundles of collagenic fibres, which one link amongthemselves walls adjacent dentinal canals. At the same time, dentinal canals are subject to dichotomizing division, which one provides their indispensable density in a dentine in process of increase of the spherical area with approximation to dentinal-enamel boundary. Due to this in a dentine the availability of separate zones is determined, which one have the cone-shaped or pyramid-shaped form, directional top to a predentin, and basis - to enamel-dentinal boundary. This rule will well be agreeed that fact, that the form of distribution of destructive changes in a dentine at a caries coincides similar zones. Degree of an intrusion: the materials of a thesis are inserted in educational process of stands of normal anthropotomy of Lugansk state medical university, anthropotomy, histology, cytology and fetology Ukrainian medical stomatologycal academy, normal anatomy of medical faculty of the Sumy state university, anthropotomy Bukovina state medical academy, anthropotomy of the Kharkov state medical university.Sphere of usage: medicine, anatomy, therapeutic odontology.
