[Analysis of the quality of preventive examinations of children (according to the survey of dentists)].

Objective: To improve the methodology for conducting preventive examinations of children by a dentist by identifying and preventing the risks of achieving their qualitative results.

Material And Methods: A test version of the questionnaire was created, which was tested in a pilot study to assess validity and correction. A survey of 100 general dentists in Smolensk, Kaluga, Kaliningrad, Tula, who had previously participated in preventive dental examinations of children, was conducted.

Study of the Biocompatibility of Titanium-Niobium Implants by the Parameters of Their Osseointegration under Experimental Conditions.

Superelastic titanium alloys (titanium-niobium-zirconium and titanium-niobium-tantalum) are considered to be the more advantageous choice for dental implants than titanium alloys due to their physico-mechanical properties close to those of the bone tissue. Morphological studies of the biocompatibility of these alloys in comparison with titanium were carried out in vivo. Scanning electron microscopy and microprobe elemental analysis of the tissue along the interface between the bone and titanium/superelastic titanium alloys showed similar morphology and elemental composition both on days 30 (poorly mineralized connective tissue was detected in sites of contact with titanium alloy samples) and 90 after surgery (the surface of the titanium alloy samples was covered with mineralized tissue similar by its composition to the surrounding bone).

Experimental Study of the Biomechanics of Maxillary Implants under Conditions of Biomechanical Modeling.

We studied the stress-strain state of the bone tissue and maxillary full-arch fixed implantretained denture. Load was applied to the anterior (150 N) and posterior (250 N) parts of the denture supported by 6 or 4 implants, including zygomatic ones and placed by on-all-4 treatment technology. The obtained stress values in the bone tissue, implants, and denture show a large strength margin of structural materials.

[Analysis of the efficacy and safety of electric toothbrushes Oral-B with oscillating-rotating technology in «Healthy smile» program].

The aim of study was to investigate the efficacy and safety of individual oral hygiene in adult patients by regular use of electric toothbrushes with the oscillating-rotating technology basing on data obtained during the implementation of «Healthy Smile» program. Questionnaires of 7022 dentists in Russia and Ukraine were used to assess personal experience of using Oral-B PC 5000 toothbrush. The dental status dynamics after regular use of Oral-B PC 500 tooth brush was evaluatedin 21 088 patients within 12 weeks.

[Experimental base for construction alloy choice for implant-retained restorations].

The paper contains the results of experimental studies on galvanic features of "implant-construction alloy" contact pair. These results may be used as criteria for implant-retained restorations alloy choice.