[Sialotripsy as a treatment option for patients with salivary stone disease]. / Ispol'zovanie litotripsii dlya lecheniya patsientov, stradayushchikh slyunokamennoi bolezn'yu.

BACKGROUND: The pathologies of the salivary glands are very diverse. Salivary stone disease occupies a special place among diseases of the salivary glands of a non-neoplastic nature. The incidence of salivary stone disease is extremely extensive and accounts for up to 85% of all pathologies of the salivary glands. OBJECTIVE: Improvement of minimally invasive methods of treatment of salivary stone disease, which does not lead to excision of the gland. MATERIAL AND METHODS: On the basis of the Clinics of the Samara State Medical University of the Ministry of Health of Russia, in the period from 2010 to 2020, a clinical group was formed, consisting of 193 patients with salivary stone disease of various localization. The age of the patients ranged from 16 to 84 years. All patients were therapeutically examined at the preoperative stage, voluntary informed consent was signed. Shockwave sialotripsy was performed in 95 patients of the main group (in 64 patients the calculus was located in the submandibular salivary gland, in 31 patients - in the parotid salivary gland). For lithotripsy, we used a lithotripter apparatus «Edap¼ (France) and «Wolf¼ (Germany). RESULTS: The analysis of the results obtained as a result of the study made it possible to draw a conclusion about reasonably better results of removal of calculi in the ducts of the salivary glands using the lithotripter «Swiss LithoClast® Master¼ (Switzerland). At the first visit and the therapeutic effect of the lithotripter, all patients suffering from bouts of salivary colic showed complete cessation. CONCLUSION: Thus, our study, which was devoted to the study of the results of various methods of treating patients with salivary stone disease, showed that sialolithotripsy using special narrowly targeted devices for crushing and subsequent excretion of salivary calculi allows to achieve the best results at present.

[Evaluation of the species diversity of microflora isolated from the epithelium of the oral mucosa in patients using removable orthopedic structures based on dental implants]. / Otsenka vidovogo raznoobraziya mikroflory, vydelennoi s epiteliya slizistoi obolochki polosti rta, pri ispol'zovanii s"emnykh ortopedicheskikh konstruktsii s oporoi na dental'nye implantaty.

OBJECTIVE: To assess the species diversity of microorganisms isolated from the oral mucosa in patients with removable orthopedic structures based on dental implants. MATERIALS AND METHODS: The indicators of the species diversity of microorganisms isolated from the oral mucosa in patients of the main and control groups were studied. RESULTS: For prosthetic treatment of patients from main group we used a method of manufacturing an overlapping, frame prostheses supported by teeth and dental implants. The results turned out to be reliable for opportunistic microorganisms Streptococcus anginosus and representatives of the orange periodontopathogenic complex Streptococcus constellatus. CONCLUSION: Microbiological assessment indicates the effectiveness of prosthetic treatment and the use of Corega tablets.

[Modern aspects of determining dental color in aesthetic dentistry]. / Sovremennye aspekty opredeleniya tsveta zubov v esteticheskoi stomatologii.

One of the important factors for creating a beautiful smile is the color of the teeth, which for most people has a more important role than anatomical characteristics. The exact reproduction of the color of the tooth affects the appearance and psycho-emotional state of the patient. The purpose of this work is to review domestic and foreign literature on methods for determining the color of teeth. Methods for determining color are divided into visual, spectrophotometric, colorimetric, digital photo analysis and computer method. The most common in the practice of a dentist is visual, which is based on comparing the examined tooth with color templates. Determination of the color of teeth using scales does not give a reliable result, which is due to the small number of shades in the colors, the phenomenon of metamerism, the impossibility of converting the obtained data into digital values, etc. The hardware method for determining the color of teeth compensates for the disadvantages of the visual and has a high adaptability, which requires many interrelated factors. Due to the complexity and high cost, the devices are used mainly for research purposes. Currently, innovative methods for determining the color of teeth, based on digital and computer analysis, are being actively developed. Thus, hardware methods for determining the color of teeth significantly increase the accuracy of choosing the shade of a future aesthetic restoration or orthopedic construction, excluding subjective factors, however, they require mandatory certification. Correct color assessment and identification helps to reduce costly re-treatments and reduce warranty costs. Despite this, visual methods using scales remain in demand among practicing doctors, due to their low cost and ease of use. The accuracy of determining the color of teeth in this case depends on the professionalism of the dentist, as well as on the correctness of the photo protocol.

[Experimental study of the bearing capacity of lyophilized allogeneic bone material]. / Eksperimental'noe issledovanie nesushchei sposobnosti liofilizirovannogo allogennogo kostnogo materiala.

THE AIM OF THE STUDY: Was to conduct an experimental study of the bearing capacity and determination of the Young's modulus of lyophilized allogeneic bone material. MATERIALS AND METHODS: The study used 5 prototypes of lyophilized allogeneic bone blocks, which were alternately subjected to static loading by compressive force. The experimental values of Young's modulus of all bone samples were determined. When applying the Student's probability distribution in statistical processing of experimental data, the average indicators of the forces of destruction of the samples were obtained and Young's modulus was determined. RESULTS AND DISCUSSION: As a result of the study, the indices of the maximum loading (6012H) and Young's modulus (147.2±0.228 MPa) of lyophilized allogeneic bone material were obtained. CONCLUSION: The obtained Young's modulus of lyophilized allogeneic bone material is of great importance in scientific activity, providing the possibility of further investigation of the properties of lyophilized allogeneic bone tissue to form a preoperative forecast of the behavior of an osteoplastic material and a dental implant installed in it.

[Cephalometric study of 9-15 years old patients with maxillofacial anomalies and cerebral palsy]. / Tsefalometricheskie parametry u patsientov v vozraste 9-15 let s zubocheliustnymi anomaliiami i detskim tserebral'nym paralichom.

AIM: To study the morphological state of the maxillofacial system in children with cerebral palsy. MATERIAL AND METHODS: The frequency and prevalence of dental anomalies was studied in 30 9-15 years old children with cerebral palsy. For the registration of maxillofacial anomalies, the Bjork assessment method was used. The severity of sagittal incisive disocclusion and the reverse sagittal incisal disocclusion was measured by the magnitude of the sagittal slit. RESULTS: The study revealed no age-dependent correlation of lower canines and second premolars roots growth. The parameters of the cerebral part of the skull measured on the CT-bases lateral cephalograms were significantly less than normal rates except for the length of the posterior part of the skull. CONCLUSION: The morphological changes that determined the formation of sagittal and vertical incisive disocclusions were defined: the reduction of total anterior morphological face height (N-Me) and anterior upper morphological face height (N-SpP) and the increase in the anterior lower morphological face height (SpP-Me) which are characteristic features for patients with incisive sagittal and vertical diocclusion.

[Technology of manufacturing of personalized reconstructive allogenic bone graft (in Russian only)]. / Tekhnologiia proizvodstva personifitsirovannogo rekonstruktivnogo allogennogo kostnogo implantata.

AIM: To develop the technology of manufacturing of reconstructive allogenic bone graft with individual parameters by using of digital prototyping and modeling. MATERIAL AND METHODS: Allogeneic cadaveric bone blocks were used as material. The following methods were used to develop a manufacturing technology for personalized allogenic reconstructive bone implant: harvesting and special preparation of cadaveric material, primary disinfection, viral inactivation, ultrasound management, lyophilization of bone material, CT-examination of patients with various bone defects, digital prototyping and modeling, milling on a machine with numerical program control, X-ray sterilization. RESULTS: The technology of manufacturing of reconstructive allogenic bone graft with individual parameters was successfully tested in the treatment of 24 patients with post-traumatic, destructive-dystrophic and degenerative defects of jaws in 2012-2015. Final reconstructive allogenic bone implant has a personalized 3D-geometry in accordance with individual maxillofacial anatomy of particular patient. One of implant surfaces is fully congruent to the jaw bone defect, the others form the width, height and volume of reconstructive bone implant considering personified maxillofacial features. All above-mentioned features of bone implant are important to restore chewing function of dental system. CONCLUSION: The problem of bone implant personification may be resolved by using of computed tomography followed by digital analysis of jaw structure, technologies for digital reconstruction of bone defects (digital prototyping and modeling) and digital manufacturing.

[Estimated error of bone digital solid 3D-model construction algorithm]. / Otsenka pogreshnosti algoritma postroeniia tsifrovoi tverdotel'noi 3D-modeli kostnogo fragmenta.

The aim of the study was an experimental estimation of precision of maxilla bone digital solid 3D-model construction algorithm. The experiment was carried out on 12 mutton mandibles used 3D-model construction based on CT data. Estimated error was calculated for each of the stages of proposed processing algorithm including 3 software: ScanIP (triangle mesh calculation, primary solid 3D-model), ArtecStudio 9 (secondary procession for artefacts elimination), ZBrush 4R6 (triangle mesh simplification, final 3D-model). The proposed algorithm provides satisfactory precision for solid 3D-model with individual maxillary bone features.

[Orthodontic treatment of malocclusion Class III in patients aged 6-12 by Postnikov appliance, face mask and bracket system]. / Ortodonticheskoe lechenie zuboal'veoliarnoi formy mezial'noi okkliuzii u detei 6-12 let apparatom Postnikova, litsevoi maskoi i breket-sistemoi.

The diagnostics and treatment of malocclusion Class III in patients aged 6-12 is an vital problem in orthodontics. Method of orthodontic treatment of malocclusion Class III in patients with the help of improved and patented orthodontic construction - 'Postnikov appliance' - and face mask and bracket system is analysed in the article. Orthodontic treatment of malocclusion Class III was examined in 24 patients aged 6-12 by the suggested method. All patients were examined clinically and with the help af additional diagnostic methods: head cephalometry in lateral position with further data analysis in Dolphin Imaging (USA). The use of computer technologies in Dolphin Imaging helps to controll the process of correction of dentition correlation in different stages of treatment, to reduce the period of treatment of malocclusion Class III in patients aged 6-12 and to improve face esthetics and life quality ratio.

[The attitude of elderly people living in Samara to organizational forms in gerontostomatology (based on materials of medical and sociological research)].

This article presents the results of medical and sociological research devoted to the study of elderly patients' opinion about different organizational forms providing gerontostomatological assistance. We came to the conclusion that the citizens of the old age groups have different preferences. The introduction of new organizational forms into dentistry for the elderly should be based on the results of sociological research.

[Peculiarities of bone tissue regeneration when using various osteoplastic materials in experiment].

During the experiment on 18 rabbits by histologic methods there were investigated particularities of tissue regeneration after filling of bone defect by various osteoplastic materials for terms 14, 30 and 90 days. The advantage of the mixture of osteobrefomatrix and hydroxyappatite in comparison with independent using of eaxh of these materials. Regeneration of bone tissue was scen in early terms and it was matched to the bone structure in 90 days only by filling bone defect by the of mixture osteobrefomatrix and hydroxyiappatite.

[Morphological evaluation of Nd:YAG laser exposure to parodontal tissues].

With the help of a light microscopy method of morphometric techniques there were studied dynamics of morphological changes in gum tissues after traditional open curettage and Nd:YAG laser treatment of parodontal pockets in VSP mode. One monph after traditional curettage signs of chronic inflammation were still present, while after the laser exposure complete regeneration of the tissues was achieved.