The authors describe a tactile surgical navigation system using custom 3-dimensional (3D) models of the bony pelvis for complex acetabular fracture surgery. The bone area of interest was extracted from the Digital Imaging and Communications in Medicine (DICOM) data of computed tomography scans. A standard triangulated language file was used to create 3D models of the bony pelvis by layered manu...

Introduction: The aim of the present study was to compare hand stainless steel K-files and Nickel-titanium Profile 0.04 taper 29 series rotary instruments for their efficiency, procedural errors and time consumed in preparation of root canal system. Materials and Methods: A total of 46 maxillary and mandibular first premolars extracted for orthodontic purposes were collected (two contralateral ...

This research program investigated critical fabrication aspects, mechanical and electrical properties, andpotential applications of a novel carbon nanotube material, named shear-pressed sheet. This material isfabricated from the chemical vapor deposition grown, tall aligned carbon nanotube arrays, with the use ofautomated shear-pressing device. It was shown that such sheets, having ...

textbooks play a pivotal role in language learning classrooms. the problem is that among a wide range of textbooks in market which is appropriate for a specific classroom and a group of learners. in order to evaluate elt textbooks theorists and writers have offered different kinds of evaluative frameworks based on a number of principles and criteria. this study evaluates a series of elt textboo...

INTRODUCTION The aim of this study was to compare the cyclic fatigue resistances of nickel-titanium rotary glide path files, which are manufactured as single-file systems, under dynamic model. METHODS Twenty ProGlider (16.02) and 20 One G (14.03) nickel-titanium glide path files were included in this study. Cyclic fatigue tests were performed with specifically manufactured dynamic cyclic test...

OBJECTIVES The purpose was to investigate the preference and usage technique of NiTi rotary instruments and to retrieve data on the frequency of re-use and the estimated incidence of file separation in the clinical practice among general dentists. MATERIALS AND METHODS A survey was disseminated via e-mail and on-site to 673 general dentists. The correlation between the operator's experience o...