Mechanical Properties of Hard Tissue Adhesive Films

2009 ◽  
pp. 87-87-9
Author(s):  
PC Moon ◽  
JW Moxley ◽  
TW Haas ◽  
YH Chang
Keyword(s):  
Mechanical Properties ◽  
Tissue Adhesive ◽  
Hard Tissue

Directional Tortuosity as a Predictor of Modulus Damage for Vertebral Cancellous Bone

2015 ◽  
Vol 137 (1) ◽  
Author(s):  
David P. Fyhrie ◽  
Roger Zauel
Keyword(s):  
Mechanical Properties ◽  
Cancellous Bone ◽  
Volume Fraction ◽  
Compressive Strain ◽  
Effective Modulus ◽  
Hard Tissue ◽  
Bone Volume Fraction ◽  
Tissue Microstructure ◽  
Induced Changes ◽  
Effective Mechanical Properties

There are many methods used to estimate the undamaged effective (apparent) moduli of cancellous bone as a function of bone volume fraction (BV/TV), mean intercept length (MIL), and other image based average microstructural measures. The MIL and BV/TV are both only functions of the cancellous microstructure and, therefore, cannot directly account for damage induced changes in the intrinsic trabecular hard tissue mechanical properties. Using a nonlinear finite element (FE) approximation for the degradation of effective modulus as a function of applied effective compressive strain, we demonstrate that a measurement of the directional tortuosity of undamaged trabecular hard tissue strongly predicts directional effective modulus (r2 > 0.90) and directional effective modulus degradation (r2 > 0.65). This novel measure of cancellous bone directional tortuosity has the potential for development into an anisotropic approach for calculating effective mechanical properties as a function of trabecular level material damage applicable to understanding how tissue microstructure and intrinsic hard tissue moduli interact to determine cancellous bone quality.

Mechanical Properties and In Vitro Bioactivity of β-Tri Calcium Phosphate, Merwinite Nanocomposites

2011 ◽  
Vol 493-494 ◽  
pp. 582-587 ◽  
Author(s):  
Marziyeh Abbasi-Shahni ◽  
Saeed Hesaraki ◽  
Ali Asghar Behnam-Ghader ◽  
Masoud Hafezi-Ardakani
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Calcium Phosphate ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Sem Analysis ◽  
In Vitro Bioactivity ◽  
Hard Tissue ◽  
Calcium Phosphate Layer

In this study, nanocomposites based on of β-tri calcium phosphate (β-TCP) and 2.5-10 wt% merwinite nanoparticles were prepared and sintered at 1100-1300°c.The mechanical properties were investigated by measuring compressive strength and fracture toughness. Structural properties were evaluated by XRD, TEM and SEM analysis, and the in vitro bioactivity was studied by soaking the samples in simulated body fluid (SBF). The mechanical strength of the sintered samples wereincreased, by increasing the amount of merwinite phase up to 5 wt%, whereas it decreased when the samples were sintered at 1100 and 1200°c. Nanostructured calcium phosphate layer was formed on the surfaces of the nanocomposites within 1 day immersion in simulated body fluid. Because of appropriate mechanical properties the composite is suggested to be used as substitute for hard tissue.

scholarly journals Comprehensive data on the mechanical properties and biodegradation profile of polylactide composites developed for hard tissue repairs

Data in Brief ◽  
2020 ◽  
Vol 32 ◽  
pp. 106107
Author(s):  
Abraham K. Aworinde ◽  
Samson O. Adeosun ◽  
Festus A. Oyawale ◽  
Eyere Emagbetere ◽  
Felix A. Ishola ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hard Tissue ◽  
Comprehensive Data

Control of Crystal Orientation of Hydroxyapatite by Imposing a High Magnetic Field

2005 ◽  
Vol 284-286 ◽  
pp. 75-78 ◽  
Author(s):  
Cun You Wu ◽  
Yuichiro Murakami ◽  
Kensuke Sassa ◽  
Kazuhiko Iwai ◽  
Shigeo Asai
Keyword(s):  
Magnetic Field ◽  
Crystal Structure ◽  
Mechanical Properties ◽  
Surface Properties ◽  
High Magnetic Field ◽  
Crystal Orientation ◽  
Hexagonal Crystal ◽  
Hard Tissue ◽  
Oriented Crystal ◽  
Mineral Constituent

The controlled development of texture microstructure in ceramics is one effective way to improve their properties, such as electrical, mechanical properties and biocompatibility. A bioceramics with oriented crystal structure has attracted great interest. In bone reparations, Hydroxyapatite (HAp)-based biomaterials were frequently used. And HAp is the main mineral constituent of the hard tissue of human bodies, which occurs with a hexagonal crystal. A HAp crystal turns out to have different surface properties in a- (or b-) plane and c-plane. In this regard, to get highly oriented HAp is very important before using HAp as a biomaterial. And the crystal orientated HAp is useful not only as biomaterials but also as protein absorbents. In this research, two different kinds of HAp-based biomaterial with oriented structure (HAp bioceramics and HAp-coated titanium composite) were studied.

Sintering and Mechanical Properties of Dense Hydroxyapatite Nanocomposites

2010 ◽  
Vol 123-125 ◽  
pp. 771-774 ◽  
Author(s):  
Chanoknan Monthien ◽  
Kanjana Silikulrat ◽  
Gobwute Rujijanagul ◽  
Tawee Tunkasiri ◽  
Sittiporn Punyanitya ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Biological Properties ◽  
Hard Tissue ◽  
Engineering Applications ◽  
Sintering Additive ◽  
Rate Controlled ◽  
Hard Tissue Engineering ◽  
Sintering Method

During recent years, there have been efforts in developing nanocrystalline bioceramics, to enhance their mechanical and biological properties for use in hard tissue engineering applications. In this work, we study the effects of some sintering additive nanopowders dopants on the properties of the sintered HA structures. Calculated quantities of silica nanopowders are incorporate as dopants into dried HA nanopowder. The mixing powders are uniaxially compacted and then sintered at 1200°C by rate-controlled sintering method in air. Compositional, microstructural, morphological and mechanical characterizations are carried out on sintered HA samples.

Tissue Adhesive Hydrogel Bioelectronics

2021 ◽  
Author(s):  
Shengnan Li ◽  
Yang Cong ◽  
Jun Fu
Keyword(s):  
Mechanical Properties ◽  
Wearable Devices ◽  
Tissue Adhesive ◽  
Electronic Skin ◽  
Biomedical Electronics

Flexible bioelectronics have promising applications in electronic skin, wearable devices, and biomedical electronics etc. Hydrogels have unique advantages for bioelectronics due to the tissue-like mechanical properties and excellent biocompatibility. Particularly,...

scholarly journals Mechanical Properties of Poly (L-Lactide)-Based Composites for Hard Tissue Repairs

2020 ◽  
Vol 9 (5) ◽  
pp. 2152-2155
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Lactic Acid ◽  
Cortical Bone ◽  
Cancellous Bone ◽  
Biocompatible Materials ◽  
Melt Blending ◽  
Hard Tissue

The struggle in osteosynthesis continues with the search for more biocompatible materials to replace metallic scaffolds. Poly(L-lactic) acid (PLLA), a biopolymer, was processed via melt-blending technique by blending chitosan and Ti-6Al-2Sn-2Mo-2Cr-0.25Si powders with it in varying compositions at 290 oC. The microhardness values, compressive moduli and fracture toughness of the reinforced PLLA improved significantly while the resulting composites were found to be less tough than the unreinforced PLLA. Compressive moduli obtained were much lower than the modulus of cortical bone. They were, however, mechanically compatible with the properties of cancellous bone.

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