CHANGES OF DENTAL STATUS IN PATIENTS WITH MALIGNANT TUMOR OF OROPHARYNGEAL REGION DURING ANTITUMOR TREATMENT

Aim. A review of the literature on the effect of the antitumor treatment on the dental status of patients with malignant neoplasms of the oropharyngeal region.Materials and methods. A study of Russian and foreign literature of recent years in the databases of RSCI, Scopus, Web of Science, Pubmed.Results. The condition of the organs and tissues of the oropharyngeal region in patients with malignant neoplasms during the antitumor treatment depends on the therapy used and the general state of body.Conclusion. Combined treatment of malignant neoplasms of the oropharyngeal region causes immediate, early, delayed damage and reactions, which is necessary to control at each stage of the antitumor treatment to improve quality of the subsequent prosthetic rehabilitation of patients

Importance of implementation disease prevention programs temporomandibular joint in elderly and senile

The aim of the study was to increase the effectiveness of prevention of dysfunctional states of the temporomandibular joint (TMJ) in elderly and senile age by developing and implementing new approaches to health education as part of the creation and implementation of the program «Prevention of diseases of the temporomandibular joint in elderly and senile». To achieve the objectives were examined 86 patients from 60 to 83 years: 25 patients with symptoms of diseases TMJ found as a result of uptake with complaints of difficulty in chewing, aesthetic dissatisfaction, and 61 patients who were sent for consultation gnathology doctors another profile under the program "Prevention of diseases of the temporomandibular joint in elderly and senile.

TO THE 90TH ANNIVERSARY OF THE BIRTHDAY OF PROFESSOR PETROSOV YURI ARTEMOVICH

The article presents the results of the historical and biographical research of the personality of the outstanding scientist, innovator of the methods of treatment of temporomandibular joint diseases – Yuri Artemovich Petrosov

HISTORICAL ASPECTS OF MEDICAL SPECIALTY "DENTISTRY"

Developing Dentistry is rooted in deep antiquity, from the time that all concerned by the question of getting rid of a toothache. The study of Russian and foreign literature of recent years in the databases of Scopus, Web of Sciences, PubMed about the main stages of development of dentistry. Identified stages of differentiation of dental science, shows the emergence of its independent sections. The characteristic of the main directions of research centers, their leaders and the academic schools. Thanks to the work done the way dentistry in our country in recent years has taken a great step forward. Restoring a complete picture of the formation of dentistry as a medical specialty will contribute to making the correct choice when searching for modern ways of further development

Comparative multi-modal, multi-scale residual stress evaluation in SLM 3D-printed Al-Si-Mg alloy (RS-300) parts

SLM additive manufacturing has demonstrated great potential for aerospace applications when structural elements of individual design and/or complex shape need to be promptly supplied. 3D-printable AlSi10Mg (RS-300) alloy is widely used for the fabrication of different structures in the aerospace industry. The importance of the evaluation of residual stresses that arise as a result of the 3D-printing process’ complex thermal history is widely discussed in literature, but systematic assessment remains lacking for their magnitude, spatial distribution, and comparative analysis of different evaluation techniques. In this study, we report the results of a systematic study of residual stresses in 3D-printed double tower shaped samples using several approaches: the contour method, blind hole drilling laser speckle interferometry, X-ray diffraction, and Xe pFIB-DIC micro-ring-core milling analysis. We show that a high level of tensile and compressive residual stresses is inherited from SLM 3D-printing and retained for longer than 6 months. The stresses vary (from −80 to +180 MPa) over a significant proportion of the material yield stress (from −⅓ to ¾). All residual stress evaluation techniques considered returned comparable values of residual stresses, regardless of dramatically different dimensional scales, which ranged from millimeters for the contour method, laser speckle interferometry, and XRD down to small fractions of a mm (70 μm) for Xe pFIB-DIC ring-core drilling. The use of residual stress evaluation is discussed in the context of optimizing printing strategies to enhance mechanical performance and long-term durability

Interfacial velocity-dependent plasmon damping in colloidal metallic nanoparticles

Modulation of the surface plasmon resonance of colloidal silver nanoparticles driven by particle shape oscillations is interrogated via transient-scattering measurements using white light as the probe. The two-dimensional (λ, t) image of the spectrally resolved scattering shows π/2 phase shift between the modulation of center Ω(t) and width Γ(t) of the resonance − while Ω is modulated by the strain amplitude, the plasmon-damping rate Γ is modulated by the strain rate. We ascribe the effect to scattering from the electrophoretic potential generated by the motion of the interfacial double layer of the colloidal particles