The purpose of this study was to evaluate the efficiency of ProFile, GT, ProTaper, Race and K3 rotary instruments compared with hand K-files for removal of gutta-percha during retreatment. Sixty mandibular premolars were instrumented with GT rotary files and filled by thermomechanical compaction of gutta-percha and AH Plus sealer. The teeth are randomly divided into 6 groups of 10 specimens eac...

The objective of the present study was to assess the effectiveness of reciprocating instrumentation in disinfecting oval-shaped root canals infected with Enterococcus faecalis. Forty-five human lower premolars were infected with a culture of E. faecalis (ATCC 29212) for 28 days. Five other teeth that were neither contaminated nor instrumented were used as controls. The 45 specimens were divided...

BACKGROUND The main goal of endodontic treatment is to achieve cleaning and shaping prior to the filling process. OBJECTIVE This study aimed to evaluate, using atomic absorption spectrometry, the release of Calcium ions after the use of different chelating agents and protocols of agitation. METHOD Ninety human canine teeth were randomly assigned to one of nine groups (n=10), as follows: 1) ...

AIMS To demonstrate clinical application of a mesodissection platform that was developed to combine advantages of laser-based instrumentation with the speed/ease of manual dissection for automated dissection of tissue off standard glass slides. METHODS Genomic analysis for KRAS gene mutation was performed on formalin fixed paraffin embedded (FFPE) cancer patient tissue that was dissected usin...

We describe a method for determination of barbiturates, amphetamines, opiates, and methadone by the “enzyme multiplied immunoassay technique” (EMIT) applied to the centrifugal analyzer. This method gives results that agree well (92% for barbiturates, 97% for opiates, 94% for methadone, and 96% for amphetamines) with those obtained by the same technique with the SyvaGilford EMIT instrumentation,...

This paper presents a tool setup for comprehensive eventbased performance analysis of large-scale openmp and hybrid openmp/ mpi applications. The kojak framework is used for portable code instrumentation and automatic analysis while the new VampirNG infrastructure serves as generic visualization engine for both openmp and mpi performance properties. The tools share the same data base which enab...

Class 1 malocclusions are a frequent finding in the dentition of the horse. These malocclusions often result in tooth elongations that can be detrimental to normal mastication, cause pathologic orthodontic tooth movements, and predispose to painful periodontal disease. Odontoplasty, the removal of tooth material with manual or motorized instrumentation, is generally used in a conservative manne...

Positioning of the head during posterior cervical decompression and fusion requires invasive techniques (eg, pins placed through the skull) and manual repositioning intraoperatively. This article describes a new technique with a noninvasive device for such positioning. From February 2005 until June 2010 at our institution, 94 patients underwent posterior cervical decompression and fusion with i...

In this paper we present “Touching the Cloud”, a bi-manual user interface for the interaction, selection and annotation of immersive point cloud data. With minimal instrumentation, the setup allows a user in an immersive head-mounted display (HMD) environment to naturally interact with point clouds. By tracking the user’s hands using an OpenNI sensor and displaying them in the virtual environme...