Notes

Risk factors with regard to postoperative delirium as well as subsyndromal delirium within older people from the operative maintain: A potential observational study.
The information about methods of surface preparation for dentures made from ceramic based on zirconium dioxide for better adhesive fixation is presented in the first part of this article. Micromechanical methods of preparation for cementation of the surface of a zirconia dental prosthesis are discussed in the first part of this article. The second part of the article provides an overview of scientific research on chemical methods for preparing a surface made of zirconia and the problem of the bond strength of polymer cement with a prepared surface made of zirconia.This systematic literature review presents the history of the development of temporomandibular joint reconstruction, discusses the problems and difficulties faced by engineers and surgeons. Better understanding of the history of temporomandibular joint prostheses explains the origin of negative public opinion about the prosthesis. TMJ prostheses design evolution and used biomaterials are discussed to justify the lack of variability of commercially available TMJ-reconstruction systems.
The aim of the study was to study the structure of odontogenic sinusitis and identify iatrogenic etiological factors.

A retrospective analysis of the case histories of patients operated from 2015 to 2019 with a diagnosis of «Sinusitis» in the Clinical City Emergency Hospital in Tashkent, Republic of Uzbekistan in the department of emergency maxillofacial surgery was carried out. The total number of patients was 333 people 105 (31.5%) men and 228 (68.5%), the average age of patients was 39.4 years.

When analyzing the reasons for the development of sinusitis, in 73% of the total number of operated patients, there was an associated lesion of the teeth. When detailing the sources of odontogenic infection, it was determined that periapical foci of inflammation (granulomatous, granulating periodontitis, cystogranulomas) accounted for 26%, foreign bodies (teeth, roots of teeth, filling materials removed into the maxillary sinus during endodontic treatment) 31%, fistulous passages after removal teeth and attempts to eliminate perforation by surgery 43%. Other etiological factors were found chronic polypous rhinosinusitis 14%, benign tumors 8%, allergic fungal sinusitis 5%.

Clinical analysis showed that the development of most cases of odontogenic sinusitis is associated with the mistakes of dentists and is of iatrogenic origin. To prevent the development of odontogenic iatrogenic sinusitis, prior to dental interventions on the teeth of the upper jaw, it is necessary to carry out a topical diagnosis of their ratio with the maxillary sinus.
Clinical analysis showed that the development of most cases of odontogenic sinusitis is associated with the mistakes of dentists and is of iatrogenic origin. To prevent the development of odontogenic iatrogenic sinusitis, prior to dental interventions on the teeth of the upper jaw, it is necessary to carry out a topical diagnosis of their ratio with the maxillary sinus.The article is a review of modern literature and an analysis of the legal framework regarding the use of local anesthetics in children under 4 years of age. There is a discussion of the validity of the off-label principle. In the domestic and foreign literature, there are publications highlighting the use of drugs based on 4% articaine in children under 4 years old, despite age-related contraindications according to the instructions. It is necessary to pay special attention to the regulatory status of the instructions for the medical use of the medicinal product. Summarizing the presented arguments, we can talk about the available spectrum of clinical studies, meta-analyzes and RCT data on the use of articaine in dental practice in children under 4 years of age, which indicates its effectiveness and is considered a safe alternative to lidocaine for use. in children of all ages.
Improvement and evaluation of effectiveness of the arthroscopic surgery based on individual anatomical sizes in the treatment of patients with the temporomandibular disorders (TMD).

The article presents the results of complex treatment of patient with TMJ internal derangements and osteoarthritis using arthroscopic surgery. In the pre- and postoperative period, the patient was examined clinically, as well as by computed tomography (CT) and magnetic resonance imaging (MRI). In the preoperative period, the individual sizes of anatomical structures and their localization were determined according to MRI data. That made it possible to carry out surgical intervention with minimal risk. During the operation, fibrous adhesions inside the joint were eliminated with a cold plasma coblator, the disc was mechanically moved to its normal position. selleck kinase inhibitor At the end of the operation, blood plasma and hyaluronic acid were injected into the joint.

As a result of the treatment, an increase in mouth opening by 80% of the initial state, disappearance of crepitus sounds, and complete relief of pain syndrome were documented. According to objective examination methods (MRI, CT), the elimination of internal disorders, restructuring and regeneration of intra-articular elements were recorded.

No complications were revealed during the surgery. Arthroscopic TMJ surgery performed according to the described protocol is an effective and safe procedure that allows quickly restore the mobility of intra-articular elements, eliminate pain and improve the patient's quality of life.
No complications were revealed during the surgery. Arthroscopic TMJ surgery performed according to the described protocol is an effective and safe procedure that allows quickly restore the mobility of intra-articular elements, eliminate pain and improve the patient's quality of life.On the example of a clinical case of functional TMJ disorders associated with loss of bite height, an algorithm for virtual determination of the Central relation position of the jaws based on the controlled width of the articular gap and the height of the bite is described. The subsequent 3D design and application of the repositional splint showed the reality of achieving the pre-planned position and the possibility of implementing the proposed approach in clinical practice.Total nasal defects after injures or surgical interventions can negatively affect patient's quality of life. Maxillofacial prosthesis is a contemporarily and reliable solution. This method gives us opportunity to restore missing tissues and helps patients to overcome social and psychological difficulties. In this article we demonstrated advantages and disadvantages of the method in two clinical cases. The application of magnetic and adhesive retention in different cases is described. Also, we outlined clinical and technological steps of maxillofacial prosthesis manufacture. Modified procedure of impression obtaining is offered.
In the article presented data about organization of the medical care over a period of 10 months at the Municipal Public Dental clinic in the metropolitan city such as Saint-Petersburg to the patients diagnosed with new coronavirus infection.

Organization of the medical ambulatory care to the patients diagnosed with new coronavirus infection.

Layout decisions were utilized that enabled to organize the reception of patients infected with SARS-CoV-2 without disrupting the scheduled mode of treatment of the dental patients. Saint Petersburg Budgetary Healthcare Facility «Municipal Dental Clinic N 33» provided dental service to 191 patients with COVID-19.

Whereas 159 patients were admitted for treatment at the contagious isolation ward, 89 patients were consulted via the use of telehealth technology and among them 39 received telemedical assistance service. Mean age of the patients treated in the isolated ward children 8.6±3.6, adults 39.1±13.8 years. People of active working age comprised 72% of all adult patients. Males filed for dental assistance more than females (54%). ICD K04.5 was established diagnosis in 52% of cases.

We managed to demonstrate high efficiency in utilizing telehealth technology. An issue of organizing medical dental care at the II level healthcare institution for adult population and for children diagnosed with new coronavirus infection COVID-19 in the heavy populated metropolis was solved.
We managed to demonstrate high efficiency in utilizing telehealth technology. An issue of organizing medical dental care at the II level healthcare institution for adult population and for children diagnosed with new coronavirus infection COVID-19 in the heavy populated metropolis was solved.
The objective of the study was to improve the strength properties polymer by modifying its basis with various materials.

A polymer in the form of a pink-colored plasticine mass with veins was studied, a quartz mesh «Quartz splint mesh» manufactured by RTD (France) and two metal gold-plated wire mesh (0.1 mm and 0.15 mm in diameter) manufactured by Renfert (Germany). Modified test specimens, 65×40×3.5 mm in size were covered with a lavsan film and at a slight pressure the material was rolled out with a glass cylinder flush with the frame. Curing was carried out in Fhotopress photopolymer (Aveyron, RF) under the 460-470 nm wavelength light for 6 minutes on each side. The plates were sawn with a mill in the form of strips 64×10×3.3 mm and kept in distilled water at 37 °C for 50 h before testing. The test of the reinforced samples was carried out with a middle and lower location of quartz and metal grids pre-treated with adhesive and subjected to a 4-point bending test. Bending strength, bending modulus, and fracture deformation were determined using a Zwick/Roell Z010 testing machine with a constant crosshead speed under loading (5±1) mm/min. The statistical significance of the influence of reinforcing elements on the performance of the basic physical and mechanical properties of the base material was determined using Student's t-test.

The value of fracture toughness index K1 at the lower location of the quartz mesh was 3.72±0.43 MN/m1.5, which was 4.9 times significantly higher than K1 for the non-reinforced material (
=0.0001).

The ability to achieve maximum material strength with the lower reinforcement method increases the functional usefulness of removable orthodontic and orthopedic structures with a basis of «Nolatek» light-cured material.
The ability to achieve maximum material strength with the lower reinforcement method increases the functional usefulness of removable orthodontic and orthopedic structures with a basis of «Nolatek» light-cured material.
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.

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.

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 mesh», «acrylic polymer-composite frame» of size 20×18×1, 8 mm for studying microstructure and morphology.
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