| | | 2009 |
| | | 2008 |
| | Miron, Richard J.Sculean, AntonCochran, David L.Froum, StuartZucchelli, GiovanniNemcovsky, CarlosDonos, NikosLyngstadaas, Staale PetterDeschner, JamesDard, MichelStavropoulos, AndreasZhang, YufengTrombelli, LeonardoKasaj, AdrianShirakata, YoshinoriCortellini, PierpaoloTonetti, MaurizioRasperini, GiulioJepsen, SørenBosshardt, Dieter D. | 2016 |