International Society of Oral and Maxillofacial Surgeons: Fellow
Austrian Society for Surgery: Active member
Austrian Society for Oral and Maxillofacial Surgery: Active member
European Society of Temporomandibular Joint Surgeons (ESTMJS): Founding member, President 2009-2010
American Society of Temporomandibular Joint Surgeons (ASTMJS): International member
TMJ Section der Strasbourg Osteosynthesis Research Group (S.O.R.G.): Chairman since 2008
AO Craniomaxillofacial Teaching Faculty: International member