[Biomechanical fundamentals of the dentofacial anomalies treatment]. / Biomekhanicheskie osnovy lecheniia zubocheliustnykh anomalii.

The results of biomechanical investigations of the central incisor having the formed root by mathematical modeling methods are presented. The centre of resistance of a tooth, the optimal horizontal forces of action and reaction were determined. The advantage of discontinuous forces due to amortization influence of periodontal ligament fluid was biomechanically proven. The recommendations which were given after experiments and mathematical modelling were used during orthodontic treatment of 30 patients (12-18 years) with anomalies of dental arches and occlusions by mechanically acting appliances and combined ones. At the end of the treatment 90.0% of the patients had physiological teeth angulation, 93.3% had the physiological torque. However using the removable single-jaw mechanically acted appliances had not lead to improvement of the first Angle-Endruce's key in 50.0% of the patients and to elimination of gaps between teeth in 23.4% of the patients.

[Biomechanical problems of the maxillodental system in children]. / Problemy biomekhaniki zubocheliustnoi sistemy u detei.

The biomechanical regularities of the function of anatomic blocks of the maxillodental system were studied using mathematical simulation and mathematical models. The biological concept of the structure and biomechanics of human masticatory system is presented. Methods of rapid diagnosis, based on the anthropometric characteristics of the face, and a mathematical model of the function of the maxillodental system intended for the orthodontic treatment of maxillodental abnormalities in children have been developed.

[Secondary jaw deformities accompanying tumors and tumor-like formations in children and adolescents]. / Vtorichnye deformatsii cheliustei, soputstvuiushchie opukholiam i opukholepodobnym obrazovaniiam u detei i podrostkov.

Clinical follow-up of children aged 2 to 14 with tumors and tumor-like formations permitted diagnose secondary deformations of maxillary bones in 44. Symptomatology of these deformations had signs which distinguished intraosteally growing tumors from extraosseous ones localized in soft tissues adjacent to jaw bones. Good results were attained with the use of protective labial and buccal plates which not only shielded bone formations from tumor pressure before surgery but created a support for compressive dressing during sclerosing therapy of vascular tumors in children. Reconstructive and orthodontic measures, implantation of prostheses are necessary in the active period of growth and formation of maxillofacial and dental system after organ-destroying surgery for tumors and tumors-like formations in order to not only repair the anatomical shape but more so to optimize the conditions for normal functioning of the growing and forming maxillofacial and dental system of a child.

[Foreign bodies and blind wounds of the maxillofacial area in children]. / Inorodnye tela i slepye raneniia cheliustno-litsevoi oblasti u detei.

In 42 children aged 2 months to 16 years who had foreign bodies and blind wounds in the maxillofacial region, the authors examined the causes of damages which had caused penetration of foreign bodies into this anatomical part. Clinical examinations showed that there was a relationship between age, the nature of damage, and the variety of foreign bodies in children in contrast to adults. A working scheme was proposed, which reflects the nature of foreign bodies and blind maxillofacial wounds depending on the physiological periods of childhood.

[Focal demineralization of the cortical plate of the jaw and its experimental reversibility based on microphotometry data]. / Ochagovaia demineralizatsiia kortikal'noi plastinki cheliusti i ee obratimost' v usloviiakh éksperimenta po dannym mikrofotometrii.

Focal demineralization of bone tissue with local dosed vacuum (exposure of up to 20 sec) and 2% lithium chloride electrophoresis (8 sessions daily, 10 min exposure) was tried in 40 white rats (21 reference ones and 19 experimental). The maximal reduction of mineral content was achieved on days 3-7 after the end of the course and made up 76.2 +/- 15.0% (p less than 0.01) and 80.6 +/- 12.5% (p less than 0.001), respectively, as against the reference animals. Mineral content at the site of demineralization gradually normalized by day 21. This transient reduction of mineral content of bone tissue may be used in orthodontic treatment of dentition abnormalities.

[The age-related functional characteristics of the facial and soft palatal muscles in healthy children based on rheo- and electromyographic data]. / Vozrastnye osobennosti funktsii myshts litsa i miagkogo neba u zdorovykh detei po dannym reo- i élektromiografii.

Rheo- and electromyographies were used to examine facial and soft palate muscle functions in 120 children aged 4 to 12 years. The findings evidence that the blood flow intensity and velocity reduce with age, as does the response to the functional test; the vascular tone increases. The bioelectric activity of the above-mentioned muscles grows with age, this evidencing the development of a child's neuromuscular and vascular systems.

[Microphotometric research on roentgenograms of the alveolar processes in chronic gingivitis in children and adolescents]. / Mikrofotometricheskie issledovaniia rentgenogramm al'veoliarnykh otrostkov cheliustei pri khronicheskom gingivite u detei i podrostkov.

Microphotometric examination of roentgenograms has shown a progressive reduction of mineral salt levels in alveolar process bone tissue in chronic, catarrhal, and hypertrophic gingivitis in children and adolescents. The authors recommend including calcium chloride magnetophoresis in multiple-modality treatment of chronic gingivitis patients. This treatment modality stimulates metabolic processes in the tissues at the expense of alternating magnetic field effect and attenuates the inflammatory reaction due to administration of calcium salts.

[Deformities of the dental arch and alveolar process in children related to the removal of the lower temporary molars]. / Deformatsii zubnogo riada i al'veoliarnogo otrostka u detei, sviazannye s udaleniem nizhnikh vremennykh moliarov.

A total of 279 children aged 3 to 12 years were investigated. In 59 dentition defects were detected. These were located largely (39 patients) on a lower jaw. Dentoalveolar extension was found in 28 patients aged 5 to 8 years. Dentoalveolar extension was characterized as was the position and state of dental rudiments. Of 59 children put on a regular check-up list, in 28 preventive dentures were installed to avoid secondary deformation and dentomaxillary anomalies formation.

[Preservation of the germs of the permanent teeth in the surgical treatment of tooth-containing cysts in children]. / Sokhranenie zachatkov postoiannykh zubov pri operativnom lechenii zubosoderzhashchikh kist u detei.

The working scheme is offered depicting the major stages of development of teeth-containing cysts. This provided a basis for determination of indications to preservation of the follicles of permanent teeth in different degrees of resorption of the cortical plate surrounding the follicle. The technique was used to treat 25 children with positive immediate and long-term results.