1. Department of Periodontology U.F.R. of Odontology Université de Paris Paris France
2. Department of Periodontology Service d’Odontologie AP‐HP Rothschild Hospital Paris France
3. Department of Periodontology Loma Linda University School of Dentistry Loma Linda CA USA
4. Private practice Paris France
5. Laboratory Orofacial Pathologies Imaging and Biotherapies EA 2496 Université de Paris Montrouge France