Exploració per autor "Espinar, Eduardo"

Ara es mostren els items 1-11 de 11

    • Development of biomimetic NiTi alloy: influence of thermo-chemical treatment on the physical, mechanical and biological behavior 

      Rupérez de Gracia, Elisa; Manero Planella, José María; Bravo González, Luis-Alberto; Espinar, Eduardo; Gil Mur, Francisco Javier (2016-06)
      Article
      Accés obert
      A bioactive layer, free of nickel, has been performed for its greater acceptability and reliability in clinical applications for NiTi shape memory alloys. In the first step, a safe barrier against Ni release has been ...

    • Effect of temperature on the orthodontic clinical applications of NiTi closed-coil springs 

      Espinar, Eduardo; Llamas Carreras, Jose Maria; Barrera Mora, Jose Maria; Ábalos, C.; Gil Mur, Francisco Javier (2013-07-01)
      Article
      Accés restringit per política de l'editorial
      NiTi spring coils were used to obtain large deformation under a constant force. The device consists on a NiTi coil spring, superelastic at body temperature, in order to have a stress plateau during the austenitic ...

    • Friction coefficients and wear rates of different orthodontic archwires in artificial saliva 

      Alfonso, M.V.; Espinar, Eduardo; Llamas, José María; Rupérez de Gracia, Elisa; Manero Planella, José María; Barrera, J.M; Solano, E.; Gil Mur, Francisco Javier (Springer, 2013-05)
      Article
      Accés restringit per política de l'editorial
      The aim of this paper is to analyze the influence of the nature of the orthodontic archwires on the friction coefficient and wear rate against materials used commonly as brackets (Ti–6Al–4V and 316L Stainless Steel). ...

    • Improvement in adhesion of the brackets to the tooth by sandblasting treatment 

      Espinar, Eduardo; Barrera, J.; Llamas, José María; Solano, E.; Rodríguez Rius, Daniel; Gil Mur, Francisco Javier (Springer, 2011)
      Article
      Accés restringit per política de l'editorial
      In oral orthodontic treatments, achievement of a good adhesion between brackets and teeth surfaces is essential. One way to increase adhesion is to apply a surface treatment of teeth facing surfaces through the ...

    • Influence of different CoCrMo counterfaces on wear in UHMWPE for artificial joints 

      González-Mora, V. A.; Hoffmann, Michael; Stroosnijder, R.; Espinar, Eduardo; Llamas, José María; Fernández-Fairén, Mariano; Gil Mur, Francisco Javier (Springer, 2011)
      Article
      Accés obert
      Wear tests were carried out to study the effect of various counterface materials in the wear behaviour of Ultra High Molecular Weight Polyethylene (UHMWPE). The materials used as counterfaces were based on varieties of ...

    • Influence of the microstructure on electrochemical corrosion and nickel release in NiTi orthodontic archwires 

      Briceño, J.; Romeu, A.; Espinar, Eduardo; Llamas Carreras, Jose Maria; Gil Mur, Francisco Javier (2013)
      Article
      Accés restringit per política de l'editorial
      The aim of this work was to determine the influence of the present phases and the chemical composition on the corrosion behavior and the nickel ion release of the NiTi orthodontic archwires. Eight Ni–Ti archwires from six ...

    • New Ni-free superelastic alloy for orthodontic applications 

      Arciniegas Angarita, Milena Patricia; Manero Planella, José María; Espinar, Eduardo; Llamas Carreras, Jose Maria; Barrera Mora, Jose Maria; Gil Mur, Francisco Javier (2013-08-01)
      Article
      Accés restringit per política de l'editorial
      A potential new Ni-free Ti alloy for biomedical applications was assessed in order to investigate the superelastic behavior, corrosion resistance and the biocompatibility. The alloy studied was Ti19.1Nb8.8Zr. The chemical ...

    • NiTi superelastic orthodontic wires with variable stress obtained by ageing treatments 

      Gil Mur, Francisco Javier; Cenizo, M.; Espinar, Eduardo; Rodríguez Contreras, Alejandra María; Rupérez de Gracia, Elisa; Manero Planella, José María (2013-08)
      Article
      Accés restringit per política de l'editorial
      A new strategy to obtain NiTi orthodontic archwires with variable correcting stresses in different segments is presented. Different heat treatments are applied in selected segments, which produce variations in the superelastic ...

    • Reduction of Ni release and improvement of the friction behaviour of NiTi orthodontic archwires by oxidation treatments 

      Espinar, Eduardo; Llamas, José María; Michiardi, Alexandra; Ginebra Molins, Maria Pau; Gil Mur, Francisco Javier (2011-03-25)
      Article
      Accés restringit per política de l'editorial
      This work studies NiTi orthodontic archwires that have been treated using a new oxidation treatment for obtaining Ni-free surfaces. The titanium oxide on the surface significantly improves corrosion resistance and decreases ...

    • Uni and multidirectional wear resistance of different crosslinking degrees in UHMWPE for artificial joints 

      González-Mora, V. A.; Hoffmann, Michael; Stroosnijder, R.; Espinar, Eduardo; Llamas, L. M.; Fernández-Fairén, Mariano; Gil Mur, Francisco Javier (Springer, 2011)
      Article
      Accés obert
      The aim of this work was to study the effect of UHMWPE crosslinking on wear performance. Differently treated UHMWPEs were studied by means of unidirectional and multidirectional wear tests. Unidirectional tests simulate ...

    • Variation of the superelastic properties and nickel release from original and reused NiTi orthodontic archwiresOriginal 

      Gil Mur, Francisco Javier; Espinar, Eduardo; Llamas, José María; Manero Planella, José María; Ginebra Molins, Maria Pau (2012)
      Article
      Accés restringit per política de l'editorial
      Reuse of NiTi orthodontic wires has become increasingly common in dental clinics. For sterilization and recovery of the original superelastic properties of the wires, a heat treatment is usually performed between 500 and ...