Saratov JOURNAL of Medical and Scientific Research

Lyasnikov V.N.

SaratovState Technical University n.a. Yu.A. Gagarin, Head of Department of Physical Materials and Technology of New Materials, Professor, Doctor of Technical Science

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