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WOLFRAM HÖLAND is retired from Ivoclar Vivadent AG (Liechtenstein) since 2016 but he is a consultant for this company. In 2018, he finished his activity as a Lecturer at the Department of Inorganic Chemistry, Eidgenössische Technische Hochschule (ETH) in Zürich, Switzerland. GEORGE H. BEALL, PHD, is a Corporate Fellow, retired, in the Science and Technology Division of Corning Incorporated, Corning, New York. He is a Distinguished Life Member of the American Ceramic Society. Between them, Drs. Höland and Beall hold over 200 US patents, over 200 publications, and 10 textbooks.
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