نتایج جستجو برای: particularly apical parts
تعداد نتایج: 481869 فیلتر نتایج به سال:
Apical hypertrophic cardiomyopathy is a rare variant of characterized by abnormal heart muscle thickening, specifically affecting the left ventricle's apex. Classically revealing both giant T-wave inversions in precordial leads an electrocardiogram and spade-like configuration ventricular cavity on ventriculograms, diagnosis apical has evolved with cardiac magnetic resonance imaging. Despite be...
introduction: objective: this study aimed to assess the possible variations in root canal anatomy and topography of the apices of first and second maxillary molars. materials and methods: a total of 67 first and second maxillary permanent molars were collected. access cavity was prepared and 2% methylene blue was injected. the teeth were demineralized by 5% nitric acid and cleared with methyl s...
The objective of this paper is to provide an analysis of particulate metal emissions in the USA. The analysis will identify natural and industrial sources, environmental standards, emission trends, and controls of particulate emissions. Since the majority of airborne metal emissions originate from metal industries and electric utility facilities, environmental and worker assessments of exposure...
Background & Aim: Deviation from the original shape of the canal leads to poor filling and lack of proper canal seal and consequently to the failure of root treatment The aim of this experimental study was to determine the extent of apical transportation after instrumentation with hand K-Flexofile and BioRace rotary instruments by cone-beam computed tomography (CBCT). Material and Methods: In t...
This study presents the morphology and structure of rectum in Bolua turkiyae Ünal, 1999 (Orthoptera, Tettigoniidae) using light scanning electron microscopy. The digestive system insects is split up three parts as foregut, midgut hindgut. last part results show that B. consists 6 rectal pads, similar to pads found others Orthopteran species. contains muscle tissue with connective tissue, epithe...
Few studies have investigated whether or not there is an interdependence between osmoregulation and vesicular trafficking. We previously showed that in Caenorhabditis elegans che-14 mutations affect osmoregulation, cuticle secretion, and sensory organ development. We report the identification of seven lethal mutations displaying che-14-like phenotypes, which define four new genes, rdy-1-rdy-4 (...
The study was done to assess the sealing ability and adaptation of RealSeal 1, and to compare it with Thermafil. 65 single-rooted extracted teeth were selected and root canal treatment was performed. Root canals were obturated with RealSeal 1 or Thermafil. A double chamber bacterial leakage model using E. faecalis was developed to assess the sealing ability. Samples were monitored daily for 60 ...
INTRODUCTION The purpose of the present study was to quantify and compare the amount of extruded debris from apical foramen after instrumentation of the root canal system with hand and rotary instruments. MATERIALS AND METHODS Root canals of forty five fresh extracted single rooted human teeth with mature apexes and less than 15 degree of root curvature were instrumented in group A with stain...
The aim of this study was to compare the cross-sectional area of sealer plus voids of Epiphany sealer surrounding root fillings completed with Resilon cones and laterally compacted gutta-percha. The root canals of extracted human mandibular premolars were prepared to a final size of 40 (0.06 taper). The teeth were then randomly assigned into 2 groups (n = 12/group) for the filling procedures in...
This in vitro study compared conventional and digital radiographic linear measurements to determine the working length (WL) of curved canals with fine endodontic files. In total, 30 mesiobuccal root canals in molars were measured with a #06 K-file to a length 1 mm short of the apical foramen (WL1). Teeth were mounted in plastic blocks and standardized periapical radiographs were obtained by con...
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