The hydrostatic extrusion is a new method of extrusion process. The most important advantage of this method is reduction of friction and close tolerance for the coating thickness. In this study, the hydrostatic extrusion simulation of bimetallic wires has performed using of finite element method. In the following the advantages of hydrostatic extrusion compared to the direct extrusion are prese...

abstract background: the children with middle ear effusion need repeated re-tympanostomies. adenoidectomy is an effective surgical intervention in the management of chronic otitis media with effusion in conjunction with in-sertion of tympanostomy tubes (tts). to find out whether tts in different positions decrease the rate of re-tympanostomies study was done. methods: the present study retrospe...

BACKGROUND Tympanostomy tube placement is the most common surgical procedure in children. It is performed on about 1 million children and 1 million adults in the United States annually. In the past decades, tympanostomy tubes have been shown to reduce the incidence of otitis media–related complications. Although it is a welltolerated procedure with a low risk of complications, chronic perforati...

Hot-melt extrusion is one of the most widely applied processing technologies in the plastic, rubber and food industry. Today this technology has found its place in the array of pharmaceutical manufacturing operations. Melt extrusion process are currently applied in the pharmaceutical field for the manufacture of a variety of dosage forms and formulations such as granules, pellets, tablets, supp...

Purpose. Estimation of optimal viscosity a glass lubricant for chromium-nickel steel tube extrusion depending on the deformation resistance, chemical composition metal and temperature, degree rate deformation. Methodology. To determine force conditions extrusion, complex factor resistance was used, which consists in estimating value under basic process parameters plants its refinement deviation...

a 16-year-old class ii female patient was treated without tooth extraction. the upper first molars were distalized by the pendulum appliance. after six months, the molars tipped significantly to the distal. to correct this side effect, we decided to upright the molars using skeletal anchorage. on each side, a mini-screw was inserted between first and second premolars in the buccal cortical plat...

intracellular parasite in the phylum Microspora, which is defined by its resistant spore stage. Microsporidia receive little attention in veterinary medical curricula because they are considered important only as parasites of rabbits and fish. Microsporidia are important parasites of humans as well, with some species causing severe disease and death in immunocompromised individuals. Microsporid...

Aims: Assess the quantity of apical extruded debris after instrumentation with ProTaper universal files, K3 and Wave One reciprocating file. Materials Methods: Thirty lower premolars were used in this study. Teeth randomly divided into 3 groups each one contained 10 samples as follow: Group1- prepared files. Group2- Group3- Debris that was apically during canals preparation collected centrifuge...