Background and Aim: Cleaning and shaping is one of the important steps in endodontic treatment, which has an important role in root canal treatment outcome. This study evaluated the rate of file fracture and file deformation in Neolix rotary system and K-files in shaping of the mesiobuccal canal of maxillary first molars with moderate curvature.    Materials and Methods: In this ex vivo exp...

As institutions continue to grow their collections of webharvested content, there is an ever increasing need for tools that organize, index and share this data. Even a modest web crawl consisting of a few web sites may generate millions of harvested documents. Repeating these crawls over time greatly expands the complexity of stored data. Identifying the scope of a crawl, the location of a page...

INTRODUCTION Instrument failure caused by excessive torsional stress can be controlled by creating a manual or mechanical glide path. The ProGlider single-file system (Dentsply Maillefer, Ballaigues, Switzerland) was recently introduced to perform a mechanical glide path. This study was designed to compare the effect of a glide path performed with PathFiles (Dentsply Maillefer) and ProGlider on...

Re-finding files from a personal computer is a frequent demand to users. When encountered a difficult re-finding task, people may not recall the attributes used by conventional refinding methods, such as a file’s path, file name, keywords etc., the re-finding would fail. We proposed a method to support difficult re-finding tasks. By asking the user a list of questions about the target, such as ...

The Lustre File System architecture supports Object Based Storage. It separates data and metadata path of file system operations. An outage of the Metadata Server could considerably degrade the system performance. Providing a backup Metadata Server will increase the availability of Lustre File System to 99.9%. The backup server monitors the primary server over the network and shared storage to ...

A range of court cases and forensic investigations have involved thumbnail pictures contained within operating system files, such as thumbcache and thumbs.db. In many of these cases, the thumbnail image has been the evidence presented to a court. Further analysis may locate additional information relating to thumbnail pictures, such as being able to link a thumbnail to a picture file on storage...

The grid file [1] is a well known access method for multi-dimensional and spatial data. The response time needed to process path and range queries on the grid file access method can be improved significantly by distributing the data pages over multiple disks. This paper explores the disk allocation methods used to allocate the data pages of grid file among a set of disks, which can be accessed ...

AIM To introduce a new concept, the self-adjusting file (SAF), and discuss its unique features compared with current rotary nickel-titanium file systems. THE NEW CONCEPT The SAF file is hollow and designed as a thin cylindrical nickel-titanium lattice that adapts to the cross-section of the root canal. A single file is used throughout the procedure. It is inserted into a path initially prepar...

Hierarchical file systems are the most common way of organising large collections of documents. However, there are several desirable features they do lack. These include: good support for placing files in multiple locations; dynamic views on the users’ data; and explicit ordering of files. This paper introduces MetaView, a new approach to enhancing file systems so that they can present users wi...