The quality of hermetic sealing of the opening of an obturated root channel with various sealing materials (Bezline and Russian material Foscin and Belokor) was studied. Root channels were obturated using Endomethason, Forfenan, and gutta-percha pins with hermetic AN-PLUS. A total of 187 teeth of different groups were filled in patients aged 17-85 years. The quality of hermetic sealing of an obturated root channel was evaluated by x-ray examination and electrometrically directly after filling (in 10 min) and in remote periods (after 6, 12, and 24 months). The best results were attained with Bezline and gutta-percha. A combination of Bezline and Endomethason yielded satisfactory results.
The authors propose methods for the determination of the body length of adult persons based on the planimetric analysis of X-ray images of the wrist bones. The body length was calculated with the help of regression equations derived with reference to the age-specific changes of the wrist bones visible on X-ray images. The results of the calculation were compared with the known body length of selected subjects.
It is proposed to extend the program of social and hygienic monitoring of public health by virtue of inclusion of risk factors for diseases according both to lifestyle and corresponding periodic health examination groups. Information can be obtained on the basis of materials of "Health centers".
Interdisciplinary study of telomere length, polymorphism of genes of renin-angiotensin (ACE) and serotonin (5HTR2A and 5HTTPR) systems in population of aged and old inhabitants of the North-West of Russia was conducted, in their relations to data from clinical and geriatric anamnesis, and psychological functioning. Regular link between telomere length and respondent's age was demonstrated in subgroups of old respondents and long-livers, by method of factor analysis.