DETERMINATION OF BONE DENSITY IN THE GRINDER TEETH AREA

Comparison of bone density among men and women in the area of the proposed dental implantation in the region of the grinder teeth of the upper jaws. In the 21st century, various methods are used to determine bone density in the area of dental implantation; the most common is computer tomography. For a better understanding of computed tomography scans, the dentist uses various computer programs. In our work, we used the Ez3D2009 program of Vatech Co., Ltd. to compare bone density in the area of intended dental implantation in the region of the grinder teeth of men and women. Estimation of bone density in the area of intended dental implantation in the region of the grinder teeth is necessary for the best choice of implants, the progress of the surgical operation, makes it possible to predict more accurately the duration of treatment, ensure reliable fixation and long-term functioning of implants

Dental practice in the context of the Covid-19 PANDEMIC in the Moscow region

The Covid-19 pandemic, which began in early 2020, has made a difference in everyday and professional life. Vaccinations and work to prevent the spread of the virus are being actively carried out, but globally, the incidence of Covid-19 unfortunately cannot be reduced. In order to minimize the risk of viral infection in private clinics, patients are admitted to a formed, permanent team consisting of an administrator, a dentist, a doctor’s assistant. In state clinics, while providing assistance to the sick, the dentist and medical personnel who came into contact with sick and infected patients were isolated for 2 weeks. An acute problem for the further work of medical institutions in the whole world and in Russia in particular is the protection of medical personnel and patients. Therefore, it is necessary to organize the work of dental clinics, taking into account the new conditions. An acute problem for the further work of medical institutions in the whole world and in Russia in particular is the protection of medical personnel and patients. The purpose of studis to analyze the situation at dental appointments in clinics in Moscow, Russia in the context of the Covid-19 pandemic. Materials and methods: A survey of 100 doctors in Moscow was carried out (average age 42.3 + 0.8). The survey questions included: analysis of work under severe constraints in spring 2020, analysis of work at the reception at the present time. Conclusion: strict adherence to new protocols both at work and in everyday life has a positive effect on preventing the spread of Coronavirus infection. © 2021, Yerevan State Medical University. All rights reserved

Оценка длины моляров и премоляров верхней челюсти и расстояния от верхушек этих зубов до верхнечелюстного синуса по данным конусно-лучевой компьютерной томографии (КЛКТ) в различных возрастных группах

To plan dental interventions on the upper jaw teeth, a doctor needs to know the relationship of the teeth apexes and maxillary sinus. Measurement of these parameters using a cone-beam computed tomography (CBCT) allows to plan the interventions precisely to minimise complications. Aim. It was to evaluate the length of the molars and premolars of the upper jaw and the distance from the apexes of their roots to the maxillary sinus floor according to cone-beam computed tomography (CBCT) in different age groups. Material and methods. We analysed CBCT data of patients in three age groups: young, middle and elderly. On the upper jaw, the length of molar and premolar roots in the examined contingent is the same in all age groups and is within 18-19 mm and 20-21 mm, respectively. Results. The smallest distance to the maxillary sinus was recorded in the second and third molars in the young and middle age group and in the second premolar region in the young age group. With age, there is a significant increase in the distance to the sinus in the molar zone.Для планирования стоматологических вмешательствах на верхней челюсти, врачу необходимо знать соотношение верхушек корней зубов верхней челюсти с верхнечелюстной пазухой. Измерение этих показателей с помощью конусно-лучевой компьютерной томографии (КЛКТ) позволяет составить план вмешательства и минимизировать развитие осложнений. Цель. Изучение длины моляров, премоляров верхней челюсти и расстояния между верхушками корней этих зубов до верхнечелюстного синуса по данным конусно-лучевой компьютерной томографии (КЛКТ) в различных возрастных группах. Материалы и методы. Нами проанализированы данные КЛКТ пациентов в трех возрастных группах: молодой, средний и пожилой. На верхней челюсти длина корней моляров и премоляров у обследованного контингента одинакова во всех возрастных группах и находится в пределах 18-19 мм и 20-21 мм соответственно. Результаты. Наименьшее расстояние до гайморовой пазухи зарегистрировано в области второго и третьего моляров в молодой и средней возрастной группе и в области второго премоляра в молодой возрастной группе. С возрастом наблюдается достоверное увеличение расстояния до синуса в зоне моляров

PREVALENCE OF DENTAL CARIES AND GINGIVITIS AMONG 1ST AND 2ND YEAR DENTAL STUDENTS

Oral diseases, such as caries and gingivitis have a significant impact on human health and currently affect the majority of the world population, despite numerous attempts to reduce the prevalence of these diseases. One of the groups that is at risk of developing caries and gingivitis are the students

Neutron lifetime measurement with the big gravitational trap for ultracold neutrons. Current state and future prospects.

International audienceA new measurement of the neutron lifetime, carried out with the aid of a large gravitational spectrometer made in Petersburg Institute of Nuclear Physics (PNPI) is presented: τn = 881.5 ± 0.7 ± 0.6 s. In our experiment the measurement of neutron lifetime is carried out using the method of storing ultracold neutrons in a material trap with gravitational barrier. Further improvement of the obtained result can be achieved at the helium temperatures. Here we present our neutron lifetime result, modified installation scheme and the first results of cryogenic tests are discussed