statement of problem: root canal cleaning and elimination of the source of infection are the most important basis and the main requirements for successful root treatment since the main cause of failure in root treatment is the permeation of bacteria or their products into the periapical tissues. nowadays, the newly designed and prcsented instruments for canal instrumentation can improve root tr...

INTRODUCTION Retreatment is performed in teeth with unsuccessful root canal therapy or persistent apical lesion. The most important factor for achieving successful retreatment is thorough cleaning and reshaping. NiTi files and rotary instruments are widely used for the removal of obturatants. This study compared the ability of Mtwo and D-RaCe retreatment systems to remove residual gutta-percha ...

During endodontic therapy, cleaning of root canals is performed using endodontic files and auxiliary chemical substances, and it is important that the endodontist be familiar with the instruments used in daily practice. This study evaluated, under scanning electron microscopy (SEM), the quality of the surface finishing of unused rotary endodontic instruments. Fifty sizes 20, 25 and 30 rotary fi...

The full report includes three files, all available at http://www.ssc.wisc.edu/%7Eoliver/RACIAL/StateTrends/StateTrends2007.htm (1) This file: RacialPatterns_Intro_National.pdf Includes introduction and national graphs. (2) StateGraphs.pdf Includes all state graphs (fifteen graphs for each of 32 states). Useful for seeing the trends within one state at a time. (Separate files for each state are...

3 Usage 4 3.1 Designing experiment files . . . . . . . . . . . . . . . . . . . . 4 3.1.1 Basic JSON syntax . . . . . . . . . . . . . . . . . . . . 4 3.1.2 Combinations and alternatives (inner nodes) . . . . . 5 3.1.3 Leaf nodes . . . . . . . . . . . . . . . . . . . . . . . . 7 3.1.4 Post-processors . . . . . . . . . . . . . . . . . . . . . . 10 3.2 The j2r command line tool . . . . . . . . . . ...

AIM To compare the cleaning effectiveness and shaping ability of Mtwo, K3, and RaCe nickel-titanium rotary instruments during the preparation of curved root canals in extracted human teeth. METHODOLOGY A total of 60 root canals of mandibular and maxillary molars with curvatures ranging between 25 degrees and 35 degrees were divided into three groups of 20 canals. Based on radiographs taken pr...

OBJECTIVE The objective of this study was to update rate files for the NIOSH Life Table Analysis System for Personal Computers (PC LTAS) reflecting the newly adopted tenth revision changes to the International Classification of Diseases. METHODS PC LTAS allows researchers to conduct comparative mortality and morbidity analyses for the purpose of identifying disease-exposure associations using...

The Remote Analysis Computation for gene Expression data (RACE) suite is a collection of bioinformatics web tools designed for the analysis of DNA microarray data. RACE performs probe-level data preprocessing, extensive quality checks, data visualization and data normalization for Affymetrix GeneChips. In addition, it offers differential expression analysis on normalized expression levels from ...

objectives : cleaning and shaping of the root canal system is an important step in endodontic therapy. new instruments incorporate new preparation techniques that can improve the efficacy of cleaning and shaping. the aim of this study was to compare the efficacy of mtwo and race rotary file systems in straightening the canal curvature using only one file or the conventional method. materials an...

Medicare administrative data are fairly accurate in identifying people who affiliate with White or Black racial groups; but less so for other race groups or for Hispanic/Latino origin. Some differences were found between people who were identified as members of these other race groups and those who were missed by the administrative data. Although Medicare administrative files are a useful sourc...