No 4 (2009)

Using JSM-U3 electron microscope (Jeol, Japan), the quality of the surfaces of zirconium and glass-fiber implant structures was compared after grinding and polishing. The data of the study demonstrated that the quality of the surfaces of factory-made suprastractures was not high enough. Polishing is obligatory and improves the surface quality substantially. Dioxide zirconium suprastructures are the most polishable.

The search for effective plastic materials that would be able to repair bony maxillofacial defects of different origins and localizations, both congenital and those after bony plastic operations, is far from being completed. One part of this problem is the choice of a biological material able to solve problems of dental and maxillofacial surgeons that would be able to efficiently and safely repair bony tissue. This makes it necessary to conduct experimental studies, including animal ones, to objectively evaluate the potential of different bony plastic materials and ground their clinical application in different situations.

The authors studied the quality and effectiveness of previous endodontic treatment while seeing the patients as dental therapeutists. They analyzed the number and frequency of exacerbations after the primary treatment in different groups of teeth as well as correlations between the sort of the filling material in the root channels and the frequency of exacerbations. Radiological examination of previously treated teeth with chronic periodontitis or an exacerbation of chronic periodontitis was performed, which made it possible to find and characterize periapical lesions as well as the quality of root channel filling.

Two National Oral Health Surveys (1996-1998 and 2007-2008) have been provided in order to investigate oral health level of Russian population. The aim of present article is to evaluate caries level among 15-yr-olds in Central Federal Region of Russia. 2252 adolescents aged 15 years old were examined in accordance with WHO criteria. The results showed that caries prevalence was 73,5%, mean DMFT - 2,97. There was a variation in DMFT values between different cities, rural and urban population. The amount of untreated lesions was higher in rural areas.

Over the past ten years some dental materials as well as sealants with bioactive glass which releases either fluoride or calcium have been produced. For the fissure caries prevention Esterfill Ca/F sealant releasing fluoride and calcium and Esterfill FOTO without these minerals were applied to the sound first or second permanent molars of children (7-8- and 12-13-year-olds) from Moscow comprehensive schools. It was showed that both fissure sealants had rather good retention after 12 months. In the 7-8-years-old group Esterfill Ca/F and Esterfill FOTO had the same complete retention: 85,71% and 86,21% respectivly. Retention rate appeared to be better in the group of 12-13-year-olds: 92,16% permanent second molars were fully sealed with Esterfill Ca/F while 89,23% second molars - with Esterfill FOTO. At the end of the study no one sealed with Esterfill Ca/F occlusal surface including teeth with partial or total sealant loss had carious lesions, whereas 2 (3,45%) first molars sealed with Esterfill FOTO had developed caries. In comparison caries developed in occlusual surfaces of 10 (12,66%) control first molars and 9 (12,68%) control second molars which hadnt been sealed.

Представлены организационные формы работы гигиениста стоматологического на базе областной стоматологической поликлиники (Белгород), а также характер и объемы его работы. Дано нормирование труда этого специалиста.

The article contains qualitative and quantitative data of an analysis of randomly chosen medical records of patients who had been treated endodontically for chronic pulpitis or an exacerbation of chronic pulpitis. Correlations between age, gender, tooth group, filling material in root channels, and the frequency of exacerbations after endodontic treatment were studied.