Margarethen" in Aarburg and professor at the University of Basel. He earned his medical doctor degree at the University of Basel in 1985 and his habilitation for dentistry and prosthetics in 1991. He had been an assistant position at the "Klink für Prothetik and Kaufunktionslehre" from 1983 to 1991. He has served as a lecturer at the University of Basel at the "Institut für zahnärztliche Werkstoffwissenschaft, Technologie und Propädeutik" since 1991. Now he is working at Biomaterial Science Center, University of Basel. He established his private dental center in Aarburg in 1989, that includes fore dentists currently. Furthermore, he is the current chief dentist of the swiss army. He has published more than 200 publications and book chapters in various national and international journals.