[A mathematical analysis of the structure of the elements in the human maxillodental apparatus].

On the example of "Golden wourf" and some other models the use of mathematical methods in stomatological morphometry is demonstrated. Parameter values oscillations below 15% are considered by the authors to be the limit for normal state individual peculiarities. Relief of dental crowns are considered from biomechanical positions, representing dentition localisation as parts of conic surfaces.

[The strength of the elements of the human spinal column and the problems of the etiology, pathogenesis and principles of the treatment of degenerative spinal lesions].

The study was made of strength characteristics of the vertebra and intervertebral disks of moving parts of human spine in postembryonic ontogenesis. The authors have obtained statistically significant data on degenerative dystrophic changes and lesions of human spine. Pathogenetic issues, conservative and surgical treatment policies in degenerative lesions are considered.