1. A comparison of pressure generated by cordless gingival displacement techniques

    The Journal of Prosthetic Dentistry 107(6):388 (2012) PMID 22633595

    Statement of problem Handling properties of cordless gingival displacement materials is not well understood, resulting in incorrect use. Insufficient displacement of the gingival margin may result in a poor impression.
  2. A comparison of pressure generated by cordless gingival displacement techniques

    The Journal of Prosthetic Dentistry 107(6):388 (2012) PMID 22633595

    Statement of problem Handling properties of cordless gingival displacement materials is not well understood, resulting in incorrect use. Insufficient displacement of the gingival margin may result in a poor impression.
  3. A comparison of pressure generated by cordless gingival displacement techniques

    The Journal of Prosthetic Dentistry 107(6):388 (2012) PMID 22633595

    Statement of problem Handling properties of cordless gingival displacement materials is not well understood, resulting in incorrect use. Insufficient displacement of the gingival margin may result in a poor impression.
  4. Characterization of viscoelastic-plastic properties of solid polymers by instrumented indentation

    Polymer Testing 30(1):101 (2011)

    This paper presents formulae for visco-elastic-plastic response to indentation for various indenter shapes and times of loading, and describes a procedure for obtaining parameters of creep compliance function from monotonic load. The application is illustrated on PMMA, whose properties are ...
  5. Determination of viscoelastic-plastic material parameters of biomaterials by instrumented indentation.

    Journal of the Mechanical Behavior of Biomedica... 2(4):318 (2009) PMID 19627838

    Load response of viscoelastic-plastic materials depends on the load magnitude and history, and can be described by rheological models consisting of springs and dashpots. The parameters in these models can be obtained by instrumented indentation. Time-dependent properties are determined best from...
  6. Micromechanical evaluation of mineralized multilayers.

    Journal of Biomechanics 41(16):3414 (2008) PMID 18995855

    The biomechanical stability of osseointegrated implants is of particular importance, especially the stability which is achieved from structural manipulation at the interface between the implant surface and the bone tissues. Nanoscale beta-tricalcium phosphate-immobilized titanium was prepared by...
  7. The effect of zoledronic acid on the intrinsic material properties of healing bone: an indentation study.

    Medical Engineering & Physics 30(7):843 (2008) PMID 18843789

    Bisphosphonates are commonly used for the treatment of osteoporosis and have recently been shown to increase bone mineral parameters and strength in endochondral fracture repair. There is concern, however, that BPs may negatively affect bone material properties. Nanoindentation was performed on ...
  8. Understanding the mechanical behaviour of human enamel from its structural and compositional characteristics.

    Journal of the Mechanical Behavior of Biomedica... 1(1):18 (2008) PMID 19627768

    As the hardest and one of the most durable load-bearing tissues of the body, enamel has attracted considerable interest from both material scientists and clinical practitioners due to its excellent mechanical properties. In this paper, possible mechanisms responsible for the excellent mechanical...
  9. The effect of zoledronic acid on the intrinsic material properties of healing bone: An indentation study

    Medical Engineering & Physics 30(7):843 (2008)

    Background Bisphosphonates are commonly used for the treatment of osteoporosis and have recently been shown to increase bone mineral parameters and strength in endochondral fracture repair. There is concern, however, that BPs may negatively affect bone material properties.
  10. Influence of environment on the mechanical behaviour of mature human enamel.

    Biomaterials 28(30):4512 (2007) PMID 17659336

    To investigate the role of different environments in regulating the mechanical behaviour of mature human enamel. Healthy enamel samples were subjected to different environmental treatments such as ethanol dehydration, water re-hydration, desiccation at room temperature, and after heating (burnt)...
  11. Characterisation of enamel white spot lesions using X-ray micro-tomography.

    Journal of Dentistry 35(9):737 (2007) PMID 17683844

    The aim of this study was to characterise the mineral density (MD) of natural enamel white spot lesions (WSLs) using X-ray micro-tomography calibrated with different density hydroxyapatite phantoms. Seven natural WSLs from four extracted non-carious premolar teeth were scanned at a voxel size of...
  12. Energy absorption characterization of human enamel using nanoindentation.

    Journal of Biomedical Materials Research, Part A 81(2):484 (2007) PMID 17133444

    Enamel is a natural composite, which has much higher toughness than its major component, crystalline hydroxyapatite. In this study, the energy absorption behavior of human sound enamel was investigated with nanoindentation techniques. A UMIS nanoindenter system as well as a Berkovich and two sph...
  13. Enamel - a "metallic-like" deformable biocomposite.

    Journal of Dentistry 35(5):431 (2007) PMID 17270335

    The aim of this study is to compare the mechanical responses of enamel with dental-used metals and to show that enamel has mechanical properties similar to metals rather than ceramics. Four dental-used metals: cast alloy, gold alloy, titanium and amalgam, were compared with enamel. Pure hydroxya...
  14. Enamel—A “metallic-like” deformable biocomposite

    Journal of Dentistry 35(5):431 (2007)

    Objectives The aim of this study is to compare the mechanical responses of enamel with dental-used metals and to show that enamel has mechanical properties similar to metals rather than ceramics.
  15. Characterisation of enamel white spot lesions using X-ray micro-tomography

    Journal of Dentistry 35(9):737 (2007)

    Objectives The aim of this study was to characterise the mineral density (MD) of natural enamel white spot lesions (WSLs) using X-ray micro-tomography calibrated with different density hydroxyapatite phantoms.
  16. Influence of environment on the mechanical behaviour of mature human enamel

    Biomaterials 28(30):4512 (2007)

    Objectives To investigate the role of different environments in regulating the mechanical behaviour of mature human enamel.
  17. Elastic modulus and stress-strain response of human enamel by nano-indentation.

    Biomaterials 27(24):4388 (2006) PMID 16644007

    Nano-indentation with a sharp (Berkovich) and two spherical indenters with nominal tip radii of 5 and 20 microm was used to determine the elastic modulus and stress-strain response of human enamel. Indentation tests were made over a wide range of peak loads from 1 to 450 mN in two orthogonal dir...
  18. Elastic modulus and stress–strain response of human enamel by nano-indentation

    Biomaterials 27(24):4388 (2006)

    Nano-indentation with a sharp (Berkovich) and two spherical indenters with nominal tip radii of 5 and 20 μm was used to determine the elastic modulus and stress–strain response of human enamel. Indentation tests were made over a wide range of peak loads from 1 to 450 mN in two o...