A significant need exists for orthopedic implants that can intrinsically resist bacterial colonization. In this study, three biomaterials that are used in spinal implants--titanium (Ti), polyether-ether-ketone (PEEK), and silicon nitride (Si₃N₄)--were tested to understand their respective susceptibility to bacterial infection with Staphylococcus epidermidis, Staphlococcus aureus, Pseudomonas ae...

STATEMENT OF PROBLEM Polyetheretherketone (PEEK) can be used to support fixed dental prostheses. However, information about physicomechanical characterization is still scarce. PURPOSE The purpose of this in vitro study was to assess effects of different aging regimens/durations on roughness, solubility, water absorption, Martens hardness (HM), and indentation modulus/EIT on different computer...

Sulfonic acid-functionalized polymer electrolyte membranes alternative to Nafion(®) were developed. These were hydrocarbon systems, such as blend sulfonated polyetheretherketone (s-PEEK), new generation perfluorosulfonic acid (PFSA) systems, and composite zirconium phosphate-PFSA polymers. The membranes varied in terms of composition, equivalent weight, thickness, and filler and were investigat...

Introduction. Pedicle based posterior dynamic stabilization systems aim to stabilize the pathologic spine while also allowing sufficient motion to mitigate adjacent level effects. Two flexible constructs that have been proposed to act in such a manner, the Dynesys Dynamic Stabilization System and PEEK rod, have yet to be directly compared in vitro to a rigid Titanium rod. Methods. Human lumbar ...

Plasma treatment can be used as surface of PEEK (poly-ether-ether-ketone) to increase the bonding strength between veneering composite and dental prosthetic frameworks or enhance biocompatibility implants. These improvements are probably based on chemical changes surface. However, aim study was evaluate impact different low-pressure plasma treatments properties PEEK, such roughness, hydrophilic...

BACKGROUND Polyether-ether-ketone (PEEK), cobalt-chromium-molybdenum (CoCrMo), and highly cross-linked polyethylene (HXLPE) are biomaterials used in orthopedic implants; their wear particles are considered to induce peri-implant osteolysis. We examined whether different particle types induce the same degree of peri-implant osteolysis. METHODS Forty female rabbits were randomly divided into fo...

BACKGROUND Disc arthroplasty is gaining popularity for treatment of low-back pain caused by degenerative disc disease (DDD). It can involve total disc replacement or partial disc or nucleus replacement (or augmentation). Compared with total disc replacement, nucleus replacement is less invasive, has less surgical risk, has faster postoperative recovery, and doesn't "burn bridges" should further...

Polyetheretherketone (PEEK) and its fiber-reinforced materials are thermoplastic polymer with broad application prospects. Depositing Ni-P alloy on them can improve their poor conductivity electromagnetic shielding performance, further expand field. The effect of the plated parts is significantly impacted by bonding strength between PEEK coating. non-metallic substrate coating largely influence...

Polyetheretherketone (PEEK) is a biocompatible polymer widely used for biomedical applications. Because it biologically inert, bioactive phases, such as nano-hydroxyapatite (HA), have been added to PEEK in order improve its bioactivity. 3D printing (3DP) technologies are being increasingly today manufacture patient specific devices and implants. However, processing of challenging due high melti...