نتایج جستجو برای: polyetheretherketone

تعداد نتایج: 571  

2014
Giuseppe Scherillo Mauro Petretta Michele Galizia Pietro La Manna Pellegrino Musto Giuseppe Mensitieri

Sorption thermodynamics of water in two glassy polymers, polyetherimide (PEI) and polyetheretherketone (PEEK), is investigated by coupling gravimetry and on line FTIR spectroscopy in order to gather information on the total amount of sorbed water as well as on the different species of water molecules absorbed within the polymers, addressing the issue of cross- and self-interactions occurring in...

2015
Ji-Ho Lee Dong-Oh Lee Jae Hyup Lee Hee Jong Shim

This study aims to assess the differences in the radiological and clinical results depending on the lordotic angles of the cage in posterior lumbar interbody fusion (PLIF). We reviewed 185 segments which underwent PLIF using two different lordotic angles of 4° and 8° of a polyetheretherketone (PEEK) cage. The segmental lordosis and total lumbar lordosis of the 4° and 8° cage groups were compare...

2016
Veronika Stock Patrick R. Schmidlin Susanne Merk Christina Wagner Malgorzata Roos Marlis Eichberger Bogna Stawarczyk

In prosthetic dentistry, double crown systems have proved their suitability as retainers for removable partial dentures. However, investigations in this context, regarding polyetheretherketone, are scarce. Therefore, the aim of this study was to test the retention force (RF) between polyetheretherketone (PEEK) primary and cobalt-chromium (CoCr), zirconia (ZrO₂) and galvanic (GAL) secondary crow...

Journal: :Journal of neurosurgery. Spine 2009
Timothy C Ryken Robert F Heary Paul G Matz Paul A Anderson Michael W Groff Langston T Holly Michael G Kaiser Praveen V Mummaneni Tanvir F Choudhri Edward J Vresilovic Daniel K Resnick

OBJECT The objective of this systematic review was to use evidence-based medicine to determine the efficacy of interbody graft techniques. METHODS The National Library of Medicine and Cochrane Database were queried using MeSH headings and keywords relevant to cervical interbody grafting. Abstracts were reviewed and studies that met the inclusion criteria were selected. The guidelines group as...

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2003
Martin Steinhart Joachim H Wendorff Ralf B Wehrspohn

Nanotubes have an outstanding potential both for applications in nanotechnology and as the subject of basic research. Wetting of porous templates is a simple technique that overcomes many limitations of established preparation methods. It extends the range of processable materials, for example, by a broad range of multicomponent mixtures or by high-performance polymers such as poly(oxy-1,4-phen...

2017
Nikita Sinha Nidhi Gupta K. Mahendranadh Reddy Y. M. Shastry

Materials used for fixed partial denture (FPD) frameworks have had properties of excellent strength, durability, and biocompatibility. Some of the materials which have been used till date include alloys, ceramics, and high-performance polymers such as zirconia, Ni-Cr, lithium disilicate, and so on. All these, though excellent, have their advantages and disadvantages. Hence, the search has alway...

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