Micro X-ray Spectral Analysis and Comprehensive In Vivo Study of Modified Titanium Implants.

We developed a technique for the complex modification of the surface of dental implant made of VT1-0 titanium that included sequential mechanical treatment and irradiation with powerful ion beams. The chemical composition and physical properties of the surface of titanium implants (VT1-0 grade) sandblasted with subsequent acid etching, as well as subjected to complex treatment (sandblasting and irradiation with powerful ion beams) were evaluated using micro-X-ray spectral analysis. In in vivo experiments, osseointegrative properties of the implants subjected by these treatments were compared.

Application of Barophoresis in Chronic Generalized Periodontitis: a Mathematical Substantiation.

Unlabelled: was to evaluate the use of barophoresis for the delivery of liquid-air drug substances to the gums using a mathematical model of the interaction of the drug mixture with periodontal tissues.

Materials And Methods: The solution to the problem was preceded by generation of a geometric CAD model of the device and nozzle for barophoresis, including the nozzle and injector geometry. The Ansys SpaceClaim software package was used to generate the CAD geometry.

Interaction of Various Variants of the Nanostructured Surface of Titanium with MSCs Isolated from Adipose Tissue.

Titanium has been successfully used in dental implantology for a long time. Due to the osseointegration process, titanium implants are able to withstand the chewing load. This article is devoted to the study of surface treatment methods of titanium alloys and the study of their interaction with mesenchymal stem cells (MSCs).

Biocompatibility and Bioresorption of 3D-Printed Polylactide and Polyglycolide Tissue Membranes.

We studied biocompatibility and bioresorption of 3D-printed polylactide and polyglycolide tissue membranes. Ultrasound microscopy and histological examination showed that membranes fabricated of a copolymer of lactic and glycolic acids in a mass ratio of 1:9 are bioresorbed and have good biocompatibility with soft tissues (connective tissue, adipose tissue, and epithelium). An important feature of the copolymer membranes, which differs them from pure polylactide membranes, is the formation of a thin fibrous capsule that did not interfere its destruction by the mechanism of hydrolytic resorption.

Note: Performance of a novel electrostatic quadrupole doublet for nuclear microprobe application.

The newly designed and constructed electrostatic quadrupole doublet (EQD) at the University of North Texas (UNT) has achieved mass independent focusing of MeV particles to a spot size of 3.3 × 3.5 m.

[Dental implants in complex oral rehabilitation in patients with class III occlusion and partial teeth loss].

To prove the efficiency of dental implantation in complex treatment of patients with class III malocclusion and partial teeth loss. Nine patients aged 18-35 years with class III malocclusion and partial teeth loss were included in the study. All patients received two-step treatment involving orthodontic correction with two-step implantation and provisional restorations placement followed by orthognatic surgery procedure.

The Columbia University Sub-micron Charged Particle Beam.

A lens system consisting of two electrostatic quadrupole triplets has been designed and constructed at the Radiological Research Accelerator Facility (RARAF) of Columbia University. The lens system has been used to focus 6-MeV (4)He ions to a beam spot in air with a diameter of 0.8 µm.

Magnetic quadrupole doublet focusing system for high energy ions.

A high energy focused ion beam microprobe using a doublet arrangement of short magnetic quadrupole lenses was used to focus 1-3 MeV protons to spot sizes of 1x1 microm2 and 1-4.5 MeV carbon and silicon ion beams to spot sizes of 1.5x1.

[The effectiveness of auricular micro-needle acupuncture in the early postoperative period under conditions of day surgical unit].

The authors have developed a method of auricular microneedle analgesia--setting the microneedles in the area of the auricle floor for the period of up to 5 days which could reduce the pain syndrome.

Electrostatic Russian quadruplet with high demagnification and minimum influence of geometric aberrations.

Based on a combined analytical and numerical modelling, a high-quality probe-forming system is proposed and developed. The Matrizant method is applied to minimize the beam spot size for a fixed beam current. For quadrupoles consisting of four metallic rods, the electric field inside of the quadruplet is computed using an accurate version of the boundary element method.