Sealers were manipulated according to the manufacturer's instructions and inserted into the canals with a caliber 40 Lentulo spiral (Dentsply-Maillefer, Ballaigues, Switzerland) at low speed for 5 ...

The mixture was applied on the post and inserted into the root canal with a Lentulo spiral. The posts were fitted under finger pressure and submitted to a 2-kg static load for 10 minutes. Group 2 ...

Messier 81, a grand design spiral galaxy 12 million light-years from Earth. Image: NASA/JPL-Caltech/S. Willner (Harvard-Smithsonian Center for Astrophysics) / Wikimedia Commons The Webb Space ...

JWST has spotted a huge, ultramassive galaxy as it appeared 12.8 billion years ago, so intricately structured that it can only belong to the most spectacular category of galaxies: the grand design ...