نتایج جستجو برای: perforations
تعداد نتایج: 4590 فیلتر نتایج به سال:
OBJECTIVE The aim of this study was to determine the incidence of glove perforation among undergraduates and residents performing maxillofacial surgery and identify procedures associated with the perforations. STUDY DESIGN For this purpose, 200 pairs of surgical gloves were used. For inspecting the perforations, the gloves were filled with water, at least 500 ml. RESULTS Sixteen gloves (8%)...
The purpose of this study was to evaluate the ability of gray and white ProRoot MTA to seal furcation perforations in mandibular molars using a dye extraction leakage model. Sixty-four mandibular molars were randomly divided into four experimental groups. Six teeth with perforations were used as positive controls and six teeth without perforations were used as negative controls. Perforations in...
INTRODUCTION The risk of iatrogenic perforations in colonoscopy is not negligible. Experience with endoscopic closure of perforations is increasing and new devices for this purpose are being released, making endoscopy a therapeutic option. National data regarding iatrogenic perforations is scarce and the burden of iatrogenic perforations in out-hospital procedures is poorly characterized in the...
In a perforated well, fluids enter the wellbore through array of perforation tunnels. These perforations are typically distributed in a helical pattern around the wellbore. Available numerical models to simulate production flow into cased-and-perforated vertical wells have complicated boundary conditions or suffer from high computational costs. This paper presents a simple and at the same time ...
In Rwanda, the traditional fired solid bricks embody high fuel consumption and quantity of clay during their molding. Traditional are also heavy compared to perforated bricks. This study aimed at investigating performance made soil (CS) mixed with charcoal waste (CW) as an additive. The physical, chemical mechanical properties CS 0, 10, 30, 40 50% CW were determined. extruded manually inclusion...
In this series of 150 orthotopic hepatic transplants, clinically significant gastrointestinal hemorrhage occurred in 34 patients (23%). Five patients (15%) survived this complication. Enteric perforations occurred in 20 patients following 198 biliary-enteric procedures. Only one patient survived. Enteric perforations unrelated to biliary procedures fared only slightly better with one survivor a...
The purpose of this study was to compare the clinical, radiographic, and histo[ogic changes that occur in response to three of the most commonly used materials to repair furcation perforations. The results of the experiment showed that amalgam was superior to Cavit and calcium hydroxide as a sealing material of furcation perforations. The most severe reactions occurred in the control group wher...
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