[Principles of ontogenetic (phenotype and genotype) variability of the maxillo-dental system]. / Zakonomernosti ontogeneticheskoi (feno- i genotipicheskoi) izmenchivosti zubocheliustnogo apparata.

By means of the computer a multiple regrouping of 1090 caucasians and 1035 Mongoloids at the age of 17-21 years and 98 (corpses) caucasian ++ men at the age of 17-38 years has been performed with a subsequent inter- and ++intra-grouping analysis of 27 variants of the structure of the maxillodental system separately for the lower and upper jaws. A certain regularity between enlargement of the teeth size, increasing angle of the lower jaw and decreasing size of the longitudinal and expressive dimensions of the jaws (in accordance with decreasing size of the spongy substance and its cells) has been revealed. It is accompanied with increasing caries and vice versa within all the groups studied. There are certain borders for individual variants in every group (race, sex, wide-, middle- and ++steno-osseous). The morphotypes of the maxillo-dental system revealed are constitutional. They are marker for ontogenic rates and help to explain peculiarities++ of its individual specific reactions to caries liability.

[Validation of the concept of morphofunctional unity of the structural components of the human mandible]. / Obosnovanie kontseptsii morfofunktsional'nogo edinstva strukturnykh komponentov nizhnei cheliusti cheloveka.

Interconnections of the mandibular macro- and microsigns have been studied in 98 corpses of men. By means of the multidimensional analysis discreteness and autonomy of the mandibular structural components are revealed; this demonstrates that there is a possibility of an active arrangement of parts and structural components of the mandible depending on the external environmental conditions in order to reach optimal terminal functional effect--chewing. The most discriminative signs of contrasting variants in the structure of the mandible are revealed.

[Anatomo-anthropological typology of the jaws in man]. / Anatomo-antroplolgicheskaia tipologiia cheliustei cheloveka.

Basing on the morphological signs selected in the morphologically contrast samples of the facial skeleton, 27 variants of the upper and lower jaws have been obtained for each, characterizing interconnection and interdependence of several morphological signs. Into each of these variants people of various races and sex, with massive or gracile masticatory apparatus can get. However, the reduction degree, directness, temps and successiveness of reorganizations together with exogenic influence within the limits of the normal reaction in various parts of the masticatory apparatus of the individuals, that belong to the same variant, is identical. Thus, an anatomo-anthropological typology of the dento-maxillary apparatus is obtained, owing to which it is possible to study and compare: 1--individual morphological peculiarities, 2--regional and ethnic norms in morphology of the jaws, 3--within the 27 variants of the structure selected it is possible to study functional, biochemical and other factors. The results demonstrate, that 27 morphological variants of the jaw structure can serve as anatomical marker for distinguishing 27 risk groups for caries.