Saratov JOURNAL of Medical and Scientific Research


The study of interaction of dentures and oral microbiota

Year: 2013, volume 9 Issue: №3 Pages: 459-462
Heading: Stomatology Article type: Original article
Authors: Ryzhova I.P., Prisnyi A.A., Salivonchik М.S.
Organization: Belgorod State National Research University

Objective: to study the adhesion of oral microflora and the degree of penetration into the structure of the basis of structural polymers in a comparative perspective. Material and methods. The object of the study is based on samples representative of the modern basis of polymers subjected to contamination by microorganisms in the experiment. Assessment of the quality of the resulting surface samples of basic dental polymer after polishing using a scanning ion microscope. The study of adhesion of microorganisms on the surface of the samples was performed in the experiment in vitro by the method of V. N. Zarev, 2006. Fluorescence imaging was held to study microbial penetration into the interior of polymers of microorganisms using a confocal laser scanning microscope. Results of the study revealed a degree of adhesion and penetration of microorganisms to the surface and the structure of the base polymer. Conclusion. The findings suggest the importance of final basic polymers. Thermoplastic polymers are characterized by complex processing, concerning promote greater adhesion and infiltration of microorganisms into the interior of the construction in comparison with the acrylic polymers.

2013-03_459-462.pdf271.34 KB

Particle morphology of hydroxyapatite and its influence on the properties of biocomposite plasma coatings

Year: 2013, volume 9 Issue: №3 Pages: 441-445
Heading: Stomatology Article type: Original article
Authors: Melnikova I.P., Lyasnikova A.V., Lyasnikov V.N.
Organization: Saratov State Technical University

The purpose of the article is to identify patterns of change in the properties of biocompatible coatings during modernization of its structure by changing the morphology and crystallinity of the starting powder particles of hydroxyapatite (HA) for agglomeration and subsequent grinding. Material and methods. We investigated the morphology, degree of crystallinity and internal tension in HA powder with a particle size of 40-90 microns in the initial state and after the agglomeration process and structure piasmasprayed HA coatings application methods ray analysis (XRF and XRD) on DRON-3, infrared spectroscopy (FT-IR spectrometer Nicolet 6700), optical (MIM-8) and atomic force microscopy (SMM-2000), the laser microprobe (Spectrum 2000). Results: It was shown that change in particle morphology HA agglomerated and subsequently grinding increases the uniformity of the porous structure, its crystallinity, reduce internal stresses developing surface morphology of the coating and its nanostructuring. Conclusion. It is recommended for the improvement of characteristics of the porous structure (uniformity, strength, adhesion), and the surface morphology of implant to use agglomerating starting powders and their subsequent grinding.

2013-03_441-445.pdf264.02 KB

Scientific fundamentals for the development of dental implants

Year: 2013, volume 9 Issue: №3 Pages: 431-434
Heading: Stomatology Article type: Author's opinion
Authors: Lyasnikov V.N., Lepilin A.V., Protasova N.V.
Organization: Saratov State Technical University, Saratov State Medical University

The article deals with topical issues of development, production and application of modern biocompatible materials and coatings based on them to clinical practice. Particular attention is paid to the intraosseous dental implants, which considered to be the most popular and well established methods to address the defects of dentition with partial and fully edentulous state.

2013-03_431-434.pdf284.89 KB