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).

The cost of orthodontic treatment in children during the mixed bite period / Sebestoimost' ortodonticheskogo lecheniya u detei v period smennogo prikusa

In order to analyze the complexity and cost of methods of modern orthodontic treatment for children in the mixed bite period as well as to determine the necessary costs for eliminating dentoalveolar anomalies in primary school children taking into account the prevalence of anomalies we studied the duration and frequency of orthodontist visits during treatment using the 2x4 technique, a removable plate with artificial teeth, a ring with a spacer, a plate with a front bite pad, a plate with a shutter for the tongue, and Twin-block appliance, Dilar mask in combination with an expansion apparatus, plates with a screw, appliance with a hyrax expansion screw. Based on the complexity the salary of the orthodontist and other personnel, the costs of maintaining the doctor's workplace and the dental technician are calculated. The cost of consumables at the clinical and dental stages was determined considering the purchase prices and the cost of a specific manipulation by weighing or measuring. When calculating the necessary funding for early orthodontic treatment modern data on the prevalence and structure of orthodontic pathology in children during the mixed bite period were used. It was found that the complexity of modern orthodontic treatment during the mixed bite period varies from 5.55 hours (spacer with a ring for premature loss of a temporary tooth) to 10.73 hours in the treatment of a distal bite with a twin-block device. The cost of orthodontic treatment in mixed bite varies from 12.6 thousand rubles (a spacer with a ring for premature loss of a temporary tooth) to 33.4 thousand rubles for the treatment of a mesial bite using a Dilar mask in combination with an expanding device. Given the prevalence of dentoalveolar anomalies in children during mixed bite period, the necessary financial costs for orthodontic treatment per child examined should be at least 30 thousand rubles, and at least 40 thousand rubles for a child with a dentoalveolar anomaly.

[The Analysis of Advantages of Network Structures in Stomatology].

The article analyzes and highlights particular advantages of network structures in health care as exemplified by the network of stomatological clinics «PresiDent¼. Various approaches to establishment of principles of organization of network structures are proposed.

Experimental Validation of the Efficiency of Gamalant-paste-FORTE Plus, a Russian Osteoinductive Material, in Oral Surgery.

For evaluation of the efficiency of bone substitute, nanostructurized Gamalant-paste-FORTEPlus was placed into a mandibular defect in rats. Bone tissue reparation was evaluated after 30 days by histological methods under a microscope. Use of bone substitute in experimental mandibular defect ensured more complete and rapid restructuring of the bone tissue in comparison with the control (natural healing).

[Experimental base for internal connection dental implants for two-step implantation].

The article contains selected results of comprehensive studies on osseointegration of small diameter internal connection dental implants made of nanostructured titanium. Fatigue tests were carried out by means of new osseointegrated metal etching method.

[Results of treatment of chronic generalized periodontitis with a dispersed biomaterial Alloplant]. / Rezul'taty lecheniia khronicheskogo generalizovannogo parodontita s ispol'zovaniem dispergirovannogo biomateriala Alloplant.

There is a method of treatment of generalized chronic periodontitis with using dispersing biomaterial Alloplant and immunological, histomorphological criteria of this estimation.

[Possibilities of using laser doppler flowmetry in evaluating periodontal tissue status]. / Vozmozhnosti ispol'zovanie metoda lazernoi dopplerovskoi floumetrii (LDF) v otsenke sostoianiia tkanei parodonta.

Laser Doppler flowmetry (LDF) was used for evaluation of microcirculatory disorders in periodontal tissue of children in health and disease. Gingival capillary bloodflow was examined in children and adults with intact periodontium and orthognathic occlusion, chronic generalized catarrhal gingivitis and local periodontitis (with evaluation of the efficiency of laser therapy), in children with various maxillodental abnormalities, and in adults with partial and complete adentia. LDF findings were processed using mathematical analysis, and criteria for evaluation of capillary bloodflow in children of different age groups were defined. LDF detects microcirculatory disorders in periodontal tissues and differentiates between them, detects subjects at a high risk of periodontal inflammations, helps monitor the treatment course and evaluate the disease severity.

[Craniological research--an important study method in stomatological pathology]. / Kraniologicheskoe issledovanie--vazhnyi metod izucheniia stomatologicheskoi patologii.

Reviews 30-year experience in studies of the maxillodental system in ancient and modern residents of Siberia on craniological material. Craniological studies permitted the authors to trace the evolution of the maxillodental system, reveal the genetic relations between ethnic groups, detect the "genetic loading", and disclose the effects of morphological signs on the formation of the maxillodental system.