[Psychoneurological and degenerative-dystrophic disorders in patients with pathology of the temporomandibular joint]. / Psikhonevrologicheskie i degenerativno-distroficheskie narusheniya u patsientov s disfunktsional'nym sindromom visochno-nizhnechelyustnogo sustava.

OBJECTIVE: The aim of the study is to detail neuropsychiatric and degenerative-dystrophic disorders in patients with dysfunctional TMJ syndrome and develop principles for their correction. MATERIAL AND METHODS: 84 patients with complaints of impaired TMJ function were examined: 14 men (16.67%) and 70 women (83.33%) aged 18 to 74 years. The average age of the patients was 63.22±18.82 years. The analysis of the dental status was carried out, the state of the musculoskeletal system and somatic status in patients with dysfunctional TMJ syndrome was studied. Methods of diagnosis of autonomic dysfunction syndrome were used to assess the state of neuropsychiatric status. Occlusive disorders were evaluated in relation to the peculiarities of maintaining posture and autonomic joint dysfunction. RESULTS: Occlusive disorders were assessed in relation to the peculiarities of posture maintenance and autonomic dysfunction of the joint. Pathology of the temporomandibular region was accompanied by psychovegetative disorders in 80% of patients. At the same time, autonomic dysfunction was diagnosed with pathological changes in the autonomic index, the formation of anxiety and depression. CONCLUSION: The adequacy of rehabilitation measures was associated with the preparation of rehabilitation programs, considering the severity of dental pathology, the state of the somatic and emotional-volitional spheres. Elimination of musculo-articular dysfunctions and pain syndrome was of leading importance in the rehabilitation of patients.

[Colonization activity of conditionally pathogenic microorganisms and features of biofilm formation on the surface of thermoplastic polymer material]. / Kolonizatsionnaya aktivnost' uslovno-patogennykh mikroorganizmov i osobennosti obrazovaniya bioplenki na poverkhnosti stomatologicheskogo termoplastichnogo polimernogo materiala.

THE PURPOSE OF THE STUDY: Was to assess the microbial colonization and biofilm-forming activity of conditionally pathogenic microorganisms in vitro to samples of acrylic-free thermoplastic polymer material and to assess the possibility of its use for the manufacture of removable tooth splinting structures by injection method. MATERIALS AND METHODS: The reference strains S. aureus, S. epidermidis, S. pyogenes, E. faecalis, E. coli, and C. albicans. Biofilm-forming activity was assessed by the level of ethanol extraction of a 0.1% aqueous solution of gentian violet by measuring on a PowerWave X microplate reader (USA). RESULTS: A low degree of severity of microbial colonization and sufficient colonization resistance to the formation of a microbial biofilm of E. coli (0.374±0.056 cu opt. Pl.), S. aureus (0.272±0.039 cu. Opt. Pl.), S. epidermdis (0.299±0.028 cu opt. Pl.), S. ryogenes (0.399±0.069 cu opt. Pl.), E. faecalis (0.401±0.089 cu opt. Pl.). Moreover, C. albicans strains form a more pronounced biofilm (0.425±0.104 cu opt. Pl.) in comparison with other strains studied in the experiment. CONCLUSION: Samples from a thermoplastic polymer based on polyoxymethylene have satisfactory biomedical characteristics and can be used at the stages of dental orthopedic treatment of patients without oral candidiasis.

[Comparative evaluation of the microstructure of combined samples made on the basis of acrylic plastic]. / Sravnitel'naya otsenka mikrostruktury kombinirovannykh obraztsov, izgotovlennykh na osnove akrilovoi plastmassy.

THE RELEVANCE OF THE STUDY: Is dictated by the insufficient strength of the bases of removable plate prostheses made of acrylic plastic masses. The literature data confirm the high prevalence of strips of removable plate prostheses made of acrylic plastics, regardless of the complexity of the clinical situation, but in great dependence on the time of use of prostheses. The search for new approaches to reduce the risks of structural failures, regardless of the operating time, led to the emergence of a metal mesh and a composite frame. THE PURPOSE OF THE WORK: Is a comparative analysis of the resistance of structures to moisture and heat, in accordance with GOST R 57695-2017, aimed at modeling the aging of samples from acrylic polymers reinforced with a metal mesh and a composite frame based on fiberglass. MATERIALS AND METHODS: The whole experiment was carried out in accordance with GOST R 57695-2017 and was aimed at modeling the aging of three types of samples of acrylic polymers and combinations: «acrylic polymer-metal mesh¼, «acrylic polymer-composite frame¼ of size 20×18×1, 8 mm for studying microstructure and morphology. The obtained profiles of samples with a simulated aging effect were evaluated using an Axiovert 40MT optical microscope (Carl Zeiss), with an increase of ×200, ×500. RESULTS: Analysis of the microstructure data showed that profiles of 3 types of samples before exposure to aging factors have a homogeneous structure with a rough surface. With an increase of ×500 in four samples with a metal mesh, both before and after exposure to moisture and heat, the presence of voids between the base material and the metal reinforcing component is noted. In samples reinforced with composite material, its pronounced integration with acrylic plastic is preserved, which is due to the presence of a chemical bond. During the experiment, it was found that the conditions modeled according to GOST R 57695-2017 do not significantly affect the structure of the samples, and the morphology analysis revealed a close fit between the components of the materials in the combined samples and the absence of changes at the interface. CONCLUSIONS: The proposed option of reinforcing the base of a removable laminar denture, due to the introduction of a skeleton made of composite material based on fiberglass, is optimal for increasing the effectiveness of orthopedic treatment.

[Salivary level of lipid peroxidation products as a predictor of dental implantation complications]. / Uroven' perekisnogo okisleniia lipidov sliuny kak prediktor oslozhnenii dental'noi implantatsii.

The aim of the study was to elucidate of changes in the level of lipid peroxidation products in saliva for the development of a method for the early diagnosis of complications in dental implantation. The study included 53 patients with complications of implant treatment, 31 patients with a safe outcome of dental implantation, and 13 clinically healthy individuals. In the saliva obtained at the stage of preparation for dental implantation, the content of products of lipid peroxidation was determined. Re-saliva was taken four months after dental implantation or in the case of peri-implantitis verification. It is established that the development of inflammatory complications of dental implantation is accompanied by the development of oxidative stress, which leads to local accumulation of lipoperoxidation products. An increase in the salivary level of products of lipid peroxidation during dental implantation is observed before the formation of clinically significant changes in the tissues of the implantation canal and is associated with a high risk of development of inflammatory complications of dental implantation. The most informative and prognostically unfavorable is the increase in the salivar level of the Schiff bases.

[Evaluating the effectiveness of the new mouthguard design in athletes involved in power sports]. / Otsenka effektivnosti primeneniya novoi konstruktsii zubnoi shiny u sportsmenov, zanimayushchikhsya silovymi vidami sporta.

The aim of the study was to assess the effectiveness of the new mouthguard design for functional rehabilitation of dental system in athletes involved in contact power sports. The functional state of dental system was evaluated by interferential electromyography of masticatory muscles and Doppler ultrasound examination of periodontal tissues. Before mouthguard use the asynchrony of masticatory muscles was seen which was released after the mouthguard application: electromyographic activity of the left and right masticatory muscles was balanced and the decrease in biopotentials amplitude was found out. The mouthguard also caused no functional disorders in periodontal tissues.

[Prospects for the use of nanomaterials and high technology in dentistry. Part 1].

The paper presents the possibility of using biologically inert nanomaterials and high technology in prosthetic dentistry. Protective coating of nanostructured titanium VT1-00 magnetic elements of the locking system of removable dentures provides durability and biological inertness and high quality aesthetic design. In assessing the microstructure of titanium protective coating of ferromagnetic elements and samarium-cobalt magnets found that the nanocrystalline coating is formed, resistant to external influences, can significantly improve strength, technical and biological characteristics of samarium-cobalt magnets and ferromagnetic alloys. Fifteen patients were manufactured dentures with magnetic locks. The analysis of performance evaluation prosthetic treatment of patients with the use of the proposed prosthetic shows that the majority of patients (86.6%) obtained a good result. Patients registered restoration of aesthetic standards and the basic functions of dentition.

[Mandibular bone tissue regeneration after the introduction of the implantation system performed on the basis of carbon composite material].

The purpose of this study was to investigate the processes of regeneration of bone tissue after the introduction of new implant systems. In the experiment, performed on 10 male pigs of Landras breed aged 50-55 days and weighing 17-18.5 kg, the time course of histological changes was studied in the area of mandibular regeneration after the formation of tissue defect and the introduction of the implant of a proposed construction. Morphological analysis of the experimental results 90, 180 and 270 days after the operation demonstrated the process of reparative regeneration of damaged bone along implant-bone block boundaries. Bone repair proceeded through the stage of formation of the woven bone with its progressive substitution by the lamellar bone, with the maintenance of the shape, size and symmetry of the damaged organ.

[The effectiveness of the application of mineral water from the Klyuchi health resort in the programs of combined spa-based rehabilitation of the patients presenting with acquired jaw defects].

The results of the present study give evidence of the well-apparent sanation effect of balneotherapy with the use of therapeutic mineral water (MW) extracted at the Klyuchi health resort. Irrigation of the oral cavity with this mineral water was shown to reduce the number of the strains of opportunistic microorganisms and their virulence potential. It is concluded that the proposed method may be recommended for the treatment and prevention of dysbiosis in the oral cavity of the patients presenting with acquired jaw defects.

[Complex treatment approach in patients with lower jaw defects].

The aim of the study was to evaluate the clinical efficiency of modern materials in complex treatment of patients with lower jaw defects. The study demonstrates the advantages of biologically inert materials (carbon composite material "Uglekon-M" and titanium alloys) for lower jaw defect restoration.