Thanks to the continuous development of light-curing resin composites it is now possible print permanent single-tooth restorations. The purpose this study was compare for milling -Gandio Blocks (GR), Brilliant Crios (CR) and Enamic (EN) with composite 3D printing—Varseo Smile Crown plus (VSC). Three-point bending used measure flexural strength (σf) modulus (Ef). microhardness measured using a Vickers method, while fractographic, microstructural, texture fractal dimension (FD) analyses were...

This study focuses on the development and evaluation of OrthoNail hybrid intramedullary implant for lower limb lengthening in patients requiring significant skeletal reconstruction. The addresses challenges load-bearing during rehabilitation, providing a robust solution that is capable supporting physiological loads. Mechanical tests, including axial compression, tension, torsion, 3,4-point bending, determined implant’s load capacity fatigue resistance, while finite element analysis assessed...

Nowadays, the replacement of a hip joint is standard surgical procedure. However, researchers have continuingly been trying to upgrade endoprostheses and make them more similar natural joints. The use 3D printing could be helpful in such cases, since 3D-printed elements mimic lubrication mechanism meniscus. In this paper, we propose method deposit plastics directly on titanium alloy using (FDM). This procedure allows one obtain that are joints, easier manufacture fewer components. During...

Malaria pigment is generated during the growth of intraerythrocytic parasite plasmodium. This compound postulated as a product haemoglobin degradation and consists an unknown iron porphyrin apoprotein. We report here new spectroscopic investigation on component intact malaria obtained from in vitro cultures Plasmodium falciparum without any previous chemical or biochemical treatment sample. demonstrate use resonance Raman microspectrometry, electron paramagnetic spectrometry, magnetic...

The mechanical and tribological characteristics of the Ti-6Al-7Nb alloy were investigated within a wide range temperature time parameters thermal oxidation. hardness, HIT, indentation modulus, EIT, in question, with without an anti-wear oxide layer, determined. properties sliding couples studied under technically dry friction conditions, using ball-on-disc tribometer. test pieces non-oxidized oxidized discs, Al2O3, ZrO2, 100Cr6 balls used as counter specimens. After oxidation, surface...

(1) The interactions in the oral cavity between resin composite blocks for CAD/CAM application and saliva, biofilm, chemicals their influence on mechanical properties are still mostly unknown. purpose of this study is to examine impact artificial aging flexural strength, modulus, hardness, Weibull probability failure six materials. (2) was conducted by storing specimens water at 37 °C 3 months, then a 3-point bending test applied measured. microhardness measured with Vickers tester. analysis...

This paper presents an analysis of the impact laser annealing process on wear resistance and corrosion properties one most commonly used AISI 316 (EN 1.4401) stainless steels. The samples were irradiated using a common available fiber (Yb:glass) system in ambient environment. Considering that radiation changes morphology physicochemical structure surface layer, as well mechanical properties, extensive research has been conducted. Electrochemical tests, accelerated tests neutral salt spray,...

This study investigated the micromechanical and tribological properties of WE43 alloy (Mg-Y-Nd-Zr) subjected to cryogenic treatment precipitation hardening. Microindentation tests were carried out in range load from 100 1000 mN. The introduction deep (DCT) was shown increase hardness Young's modulus, reduce total indentation work. As set during increased, a gradual decrease measured values observed, indicating significant relationship between indent size value parameters. Cryogenic used...

The article presents the results of comparative tribological study resistance multicomponent polyoxymethylene (POM) composites to abrasive wear. fillers for studied POM matrix were a PTFE powder, bronze chopped glass fibre, and microballs, which used both individually in various combinations. Quantities developed based on simplex plan experiment. For research, Tester T-07 was as test stand. conducted presence loose abrasive, electrocorundum F90, subjected same conditions friction all tested...

The article presents the results of basic tribological research polylactide enriched with MoS2 powder. was conducted on a pin-on-disc station. Samples dimensions: 8 mm height, diameter, printed in FFF/FDM method. Two mass percentages addition were created: 1% and 2.5%. As counter-specimen steel (C45) disc used. Ra roughness range 0.3–0.4. main purpose is to determine optimal, light properties, percentage values additions 3D printing application. has shown that materials more would not be...

The possibility of using the low-pressure cold gas spraying (LPCS) method to create composite coatings hasbeen known and used for a long time. This makes it possible from physically andchemically different powders regenerate components damaged during operation. Composite coatingsof titanium aluminium at weight concentrations were selected study. research wasconducted optimise influence chemical composition on their tribologicalproperties. paper presents results tribological wear testing...

Abstract Oxo‐bridged dinuclear iron(III) complexes of two physiological‐type prophyrins, (DPDEFe) 2 O and (PPDEFe) (where DPDE = deuteroporphyrin dimethyl ester PPDE protoporphyrin ester), were investigated using resonance Raman infrared spectroscopy. The assignment the porphyrin vibrational modes was performed polarization measurements previous studies concerning corresponding mononuclear complexes, (DPDEFe)Cl, (PPDEFe)Cl, related compounds. FeOFe axial bridge μ‐oxo synthetic analogue...

Polymer materials are increasingly being used for sliding machine elements due to their numerous advantages. They even where they deformed and in such a state that interact frictionally, e.g., hydraulics or lip seals. Few publications deal with the influence of deformation, which is effect of, assembly on tribological properties polymeric material. This deformation can reach up ε ≈ 20% achieved without increasing temperature polymer The paper presents results investigations high-density...

For the polymeric materials, changing of temperature causes changes in mechanical and tribological properties sliding pairs. The goal present study was to determine change Young's modulus kinetic friction coefficient depending temperature. Three thermoplastic polymers, PA6, PET PEEK, were tested. These materials cooperated motion with a C45 construction steel disc. As part experiment, tests (by 3-point bending method) studies (using pin-on-disc stand) carried out. range determined at T =...