1. Université de Haute-Alsace CNRS IS2M UMR 7361 68100 Mulhouse France
2. Université de Strasbourg 67081 Strasbourg France
3. Université de Bourgogne Franche-Comté Laboratoire de Nanomédecine, Imagerie, Thérapeutique EA4662 25030 Besançon France
4. Visiting Professor. “Dental Materials and Prosthodontics Department” and “Optical Properties Division” in Post Graduate Program in Dentistry” Araraquara's Dental School UNSEP São Paulo Brésil
5. Clinical Associate Professor. “Department of Restorative Dentistry” at Oregon Health and Science University Portland Oregon USA