Ž . Hydroxyapatite HA -reinforced polyethylene was developed as a bone replacement material. In order to improve bonding between HA and polyethylene, and hence to increase mechanical properties of the composite, chemical treatments of HA and polyethylene were investigated and new composites manufactured. Two approaches were employed in this investigation: the use of silane-treated HA as the fil...

THE PURPOSE OF THIS LONGITUDINAL PROSPECTIVE RANDOMIZED STUDY WAS TO EVALUATE THE RELIABILITY OF TWO DIFFERENT TYPES OF ORTHODONTIC RETAINERS IN CLINICAL USE: a multistrand stainless steel wire and a polyethylene ribbon-reinforced resin composite. Moreover the level of satisfaction of the patient about the esthetic result was also analyzed by means of a Visual Analogue Scale (VAS). 34 patients ...

In this investigation an elastic stress analysis is carried out a woven steel fiber reinforced thermoplastic cantilever beam loaded uniformly at the upper surface. The composite beam material consists of low density polyethylene as a thermoplastic (LDFE, f.2.12) and woven steel fibers. Granules of the polyethylene are put into the moulds and they are heated up to 160°C by using electrical resis...

Self-reinforced composites combine lightness and increased recyclability than conventional composites. To position them within the industrial market (conventional composites) simultaneously highlight their potential in a given application context, it is necessary to analyze mechanical properties for possible exploitation. For this purpose, compression molding has been used manufacture different...

OBJECTIVE The aim of this study was to compare and elucidate the differences in damage mechanisms and response of fiber-reinforced dental resin composites based on three different brands under flexural loading. The types of reinforcement consisted of a unidirectional E-glass prepreg (Splint-It from Jeneric/Petron Inc.), an ultrahigh molecular weight polyethylene fiber based biaxial braid (Conne...

STATEMENT OF PROBLEM Fracture strength of interim fixed partial prosthesis is of great concern, especially in long-span restorations or areas of heavy occlusal stress. PURPOSE Effects of a plasma-treated woven polyethylene fiber (Ribbond) on the fracture strength of polymethyl methacrylate (Coldpac) and a resin-based two-phase curing provisional restorative material (Provipont DC) were evalua...

The experimental study deals with Hybrid fibre reinforced concrete with the use of (Polypropylene and Recycled polyethylene terephthalate RPET). The M40 grade concrete used was designed by using IS10262-2009 code. The steel fibre and synthetic fibre were added at the volume fractions up to 0.5%. Test results showed that the fibres, when used in a hybrid form, could result in superior composite ...

This article presents new modifications to the clinical technique of fabricating directly applied resin-bonded fibre-reinforced bridges. Torsional and flexural strength is achieved by means of a reinforced polyethylene fibre ribbon substructure surrounded by laminated layers of microhybrid and microfilled resins. The modifications provide a simple method for creating a better pontic-ridge relat...

A micromechanical model was developed to predict the elastic moduli of hydroxyapatite (HA) whisker reinforced polymer biocomposites based upon the elastic properties of each phase and the reinforcement volume fraction, morphology, and preferred orientation. The effects of the HA whisker volume fraction, morphology, and orientation distribution were investigated by comparing model predictions wi...