introduction: the aim of this study was to verify the effect of alternating 2.5% sodium hypochlorite (naocl) and 17% ethylenediaminetetraacetic acid (edta) on the smear layer removal from root canal surfaces. methods and materials: a total of 15 single-rooted human teeth, instrumented with protaper files, were randomly distributed in 3 groups. in group 1 ( n =7) the canals were irrigated with 1...

introduction: in this experimental study, the amount of smear layer (sl) remnants in curved root canals after chemomechanical instrumentation with two engine-driven systems or hand instrumentation was evaluated. methods and materials: forty-eight mesiobuccal roots of mandibular first molars with curvatures ranging between 25 and 35 degrees (according to schneider’s method) were divided into thr...

AIM Lumbar epidural fibrosis is increasingly recognized as a cause of persistent back pain. The aim of this study was to examine the effect Ankaferd Blood Stopper on epidural fibrosis following laminectomy in rat models. MATERIAL AND METHODS Twenty Sprague-Dawley male rats were randomly allocated to 2 groups of 10 each. The dura mater and nerve root were exposed after L1 unilateral laminectom...

The diffusion of CO2 through macro- and micro-agglomerated cork stoppers for sparkling wine was studied by a manometric technique. effective coefficients each part the stopper (cork body, disc adhesives) were determined first time. results show that small particle size along with high adhesive content level compression favor gas barrier properties stopper. Although discs placed at one end prese...

PURPOSE To investigate whether topically administered hemostatic agents ankaferd blood stopper and microporous polysaccharide hemospheres can decrease epidural fibrosis after laminectomy in rats. METHODS Eighteen adult male Sprague-Dawley rats were equally and randomly divided into three groups. In the treatment groups, ankaferd blood stopper and microporous polysaccharide hemospheres topical...

usual MET-EL-S rubber stopper (3.97 and 3.99 mg/litre), as compared to bottles capped with Parafilm (2.32 and 2.26 mg/litre). For the nitric acid wash of the MET-EL-S rubber stopper, a zinc value exceeding 30 mg/litre was found. The contents of a bottle of the MET-EL-S quality-control serum was mixed and left inverted on the rubber stopper for five days, when the zinc value was found to be 6.80...

The purpose of this study is to discuss the impact fatigue failure mechanism of a suction valve that involves the fracture with fragments torn off from the edge or surface. The shape and dimensions of the test specimen and stopper were made the same as those of the suction valve and stopper in an actual compressor. The specimen was operated by short-duration compressed air pulses, and struck ag...

Cork is a natural material produced in the Mediterranean countries. Cork stoppers are used to seal wine bottles, Cork stopper quality classification is a practical pattern classification problem. The cork stoppers are grouped into eight classes according to the degree of defects on the cork surface. These defects appear in the form of random-shaped holes, cracks, and others. As a result, the cl...