Track topics on Twitter Track topics that are important to you
In this study, it was aimed to produce electrostatically induced polyetheretherketone (PEEK) and strontium substituted hydroxyapatite (SrHA) composites. SrHA nanoparticles (5 and 10 vol%) were introduced in the PEEK matrix to increase its mechanical properties and osseointegration. In order to disperse and homogeneously distribute the nanoparticles within the matrix, an electrostatic bond was developed between the PEEK and nanoparticles by wet processing through the attraction of the oppositely charged particles. Particles were pressed and sintered according to the Taguchi Design of experiments (DoE) array. The effects of SrHA reinforcement, sintering temperature and time on the density, crystallinity and crystallite sizes were determined with density test, DSC and XRD, respectively. The disks were also analyzed via SEM, FTIR, compression, microhardness, and nanoindentation tests and were immersed into the simulated body fluid (SBF). The composites produced from electrostatically induced powders presented a homogenous microstructure as SEM analysis illustrated the homogenous dispersion and distribution of the SrHA nanoparticles. The SrHA nanoparticles decreased the relative density and crystallinity of the composite, whereas, the rise in the sintering temperature and time enhanced the relative density, according to the DoE results. SrHA reinforcement improved the reduced modulus and nanoindentation hardness of the PEEK (348.47 MPa, 5.97 GPa) to 392.02 MPa and 6.65 GPa, respectively. SrHA promoted the bioactivity of the composite: an apatite layer covered the surface of PEEK/10SrHA composite after 14 days incubation. These promising results suggest that the electrostatically bonded composite powders would be used to produce homogenous PEEK based bioactive composites.
This article was published in the following journal.
Name: Journal of biomedical materials research. Part B, Applied biomaterials
Bone regeneration is of great importance worldwide, because of various bone diseases, such as infections, tumors, and resultant fracture, birth defects, and bone loss due to trauma, explosion, or acci...
In the last 5 years, a wide variety of surface modification strategies are explored to improve the integration of poly(etheretherketone) (PEEK) implants with bone. Since PEEK does not support bone on-...
Characterized by eminent mechanical properties, chemical stability and biosafety, polyetheretherketone (PEEK), as a brand-new type of biomedical material, has been applied in the field of stomatology....
Polyaryletheretherketone (PEEK) has been commonly used for interbody fusion devices because of its biocompatibility, radiolucency, durability, and strength. Although the technology of PEEK Additive Ma...
Borate bioactive glass 13-93B3 converts into an osteoconductive hydroxyapatite-like material in a liquid medium. In this study, 13-93B3 was incorporated into a commercial PMMA (poly(methyl methacrylat...
All ceramic crowns are indicated in case of mild to moderate discoloration, restoration of traumatized or fractured teeth and abnormal tooth anatomy. Long term success of all ceramic crown...
This study compares the dentoalveolar and skeletal effects of bonded spurs associated with build-ups versus conventional bonded spurs in the early treatment of anterior open bite patients....
The purpose of this study is to evaluate the influence of two superstructure materials Porcelain Fused to Metal (PFM) and PEEK on peri- implant soft and hard tissue reaction clinically.
Clinical outcome with regard to oswestry disability index and lumbar fusion rate after implantation of titanium coated PEEK cage and common PEEK cage
All ceramic crowns are indicated in case of mild to moderate discoloration, restoration of traumatized or fractured teeth and abnormal tooth anatomy. The success of dental restorations is ...
A commonly used prosthesis that results in a strong, permanent restoration. It consists of an electrolytically etched cast-metal retainer that is cemented (bonded), using resins, to adjacent teeth whose enamel was previously acid-treated (acid-etched). This type of bridgework is sometimes referred to as a Maryland bridge.
Application of principles and practices of engineering science to biomedical research and health care.
Evaluation of biomedical technology in relation to cost, efficacy, utilization, etc., and its future impact on social, ethical, and legal systems.
The genetic constitution of the individual; the characterization of the genes.
Neutral or negatively charged ligands bonded to metal cations or neutral atoms. The number of ligand atoms to which the metal center is directly bonded is the metal cation's coordination number, and this number is always greater than the regular valence or oxidation number of the metal. A coordination complex can be negative, neutral, or positively charged.
A diagnostic test is any kind of medical test performed to aid in the diagnosis or detection of disease. For example: to diagnose diseases to measure the progress or recovery from disease to confirm that a person is free from disease Clin...