introduction: mineral trioxide aggregate (mta) has been suggested for root-end filling, vital pulp therapy, apical plug, perforations repair, and root canal filling. since the introduction of mta in 1993, many studies about this material have been published. the aim of this survey was to illustrate statistical information about published articles in pubmed-index journals vis-à-vis the various a...

Evidence-Based Medicine (EBM) is a methodological and systematic approach, which is considered as the most robust form of the empirical medicine as it sorts evidence according to their credibility. It is widely used in clinical decision-making and has several advantages, including: (1) provision of a very well-founded and objective method to adhere to high quality and safety standards in medica...

We analyze the effect of exposure to international trade on earnings and employment of U.S. workers from 1992 through 2007 by exploiting industry shocks to import competition stemming from China’s spectacular rise as a manufacturing exporter paired with longitudinal data on individual earnings by employer spanning close to two decades. Individuals who in 1991 worked in manufacturing industries ...

We explore the effect of computerization on productivity and output growth using data from 527 large US firms over 1987-1994. We find that computerization makes a contribution to measured productivity and output growth in the short term (using one year differences) that is consistent with normal returns to computer investments. However, the productivity and output contributions associated with ...

  Simultaneous mid third clavicle fracture and acromioclavicular joint dislocation is a rare combination injury, as a result of high-energy trauma. We report a patient with a middle third clavicle fracture and ipsilateral grade three-acromioclavicular joint dislocation, which is a rare combination. The patient wanted to get back to work as soon as possible, so the fracture was fixed with recons...

background: in some primary health care settings, even where the health services are not available, provisions are not made to ensure continuity of care. this study aimed to determine the availability and level of continuity of care for maternal health services in the primary health centers (phcs) in nnewi, nigeria. methods: this was a cross‑sectional survey. using multistage sampling technique...