4 research outputs found
Endodontic infection control routines among general dental practitioners in Sweden and Norway: a questionnaire survey
No full textObjective: The purpose of this study was to investigate endodontic infection prevention and control routines among general dental practitioners in Sweden and Norway. Materials and methods: A questionnaire was sent by email to 1384 general dental practitioners employed in Sweden and Norway. The participants were asked questions concerning different aspects of infection prevention and control during endodontic treatment; use of rubber dam, sealing of rubber dam, antibacterial solutions, and use of hand disinfectant and gloves. Results: The response rate was 61.4% (n: 819). 96.9% reported routinely using rubber dam during endodontic treatment. 88.3% reported always, or sometimes, sealing the area between rubber dam and tooth. Most disinfected the endodontic operative field, but the antibacterial solutions used varied. 11.9% did not use gloves at all during treatment, and 10.5% did not use hand disinfectant during treatment. Conclusions: Most of the general dental practitioners took measures to establish and maintain aseptics during endodontic treatment, which infers an awareness of the importance of endodontic infection prevention and control. But the results were self-reported and there may be a gap between claimed and actual behaviour. Further studies using observation methodologies are needed to assess how infection control routines are performed in everyday clinical practice.</p
Worry, thoughts, and images: A new conceptualization
No full textThe present chapter addresses the relations between worry, thoughts, and images. It is organized into three parts. Part 1 outlines T. D. Borkovec’s avoidance theory of worry, namely that worry reduces aversive imagery. Part 2 considers two mechanisms by which worry may reduce imagery, namely limitation of processing resources and verbal abstraction. Moreover, as there is little evidence for the first, but some evidence for the latter, Part 2 presents a new conceptual model of the relations between worry, thoughts, and images. Part 3 presents a brief outline beyond anxiety research on how avoidance theory and the verbal abstraction hypothesis may relate to the phenomenon of ruminative coping with depression
Prospects for Cherenkov Telescope Array Observations of the Young Supernova Remnant RX J1713.7-3946
No full textWe perform simulations for future Cherenkov Telescope Array (CTA) observations of RX J1713.7−3946, a young supernova remnant (SNR) and one of the brightest sources ever discovered in very high energy (VHE) gamma rays. Special attention is paid to exploring possible spatial (anti)correlations of gamma rays with emission at other wavelengths, in particular X-rays and CO/H i emission. We present a series of simulated images of RX J1713.7−3946 for CTA based on a set of observationally motivated models for the gamma-ray emission. In these models, VHE gamma rays produced by high-energy electrons are assumed to trace the nonthermal X-ray emission observed by XMM-Newton, whereas those originating from relativistic protons delineate the local gas distributions. The local atomic and molecular gas distributions are deduced by the NANTEN team from CO and H i observations. Our primary goal is to show how one can distinguish the emission mechanism(s) of the gamma rays (i.e., hadronic versus leptonic, or a mixture of the two) through information provided by their spatial distribution, spectra, and time variation. This work is the first attempt to quantitatively evaluate the capabilities of CTA to achieve various proposed scientific goals by observing this important cosmic particle accelerator
