Matemathics Model Analysis of Biomechanical Behaviour of Three Dental Materials to Loading Related to Bruxism

The aim of study is to highlights the biomechanical behaviour of three dental materials during loading related to bruxism. It was created a finite element model of mandibular canin. The modelling was performed in Rhinoceros, AutoCad and the finite element analysis was performed in COSMOSWorks 2010. Occlusal loading was applied vertical and had a value of 1000N. The analysed cervical restorations were performed by dental amalgam, composite resins and glassionomer cements. The results confirm clinical observations related to the correlations between maximal occlusal forces to incisal margin of canin and maximal tensions to the level of cervical restorations

Non-destructive characterisation of dopant spatial distribution in cuprate superconductors

Proper characterisation of investigated samples is vital when studying superconductivity as impurities and doping inhomogeneities can affect the physical properties of the measured system. We present a method where a polarised neutron imaging setup utilises the precession of spin-polarised neutrons in the presence of a trapped field in the superconducting sample to spatially map out the critical temperature for the phase transition between superconducting and non-superconducting states. We demonstrate this method on a superconducting crystal of the prototypical high-temperature superconductor (La,Sr)$_2$CuO$_4$. The results, which are backed up by complementary magnetic susceptibility measurements, show that the method is able to resolve minor variations in the transition temperature across the length of the LSCO crystal, caused by inhomogeneities in strontium doping.Comment: 11 pages, 7 figure