Braden and his coauthors give a comprehensive overview of the use of polymers and polymer composites as dental materials. These comprise polyelectrolyte based materials, elastomers, glassy and crystalline polymers and fibres. Such materials are used in dentistry as restorative materials, hard and soft prostheses, and impression materials. The chemistry of materials is reviewed, together with mechanical, thermal, visco-elastic and water solution properties. These properties are related to clinical performance, with emphasis on some of the difficulties inherent in developing materials for oral...

As America prepares to welcome its 45th president, he or she will face a multitude of challenges, including the
security of the nation and its people. Terrorism, specifically violent Islamist extremism, is ravaging the Middle
East while having repercussions here in the United States and the world. This volume of The ANNALS delves
into the issue of terrorism and offers direction and guidance to the next president and administration for
countering violent extremism (CVE).