Long-term stability of peri-implant tissues after bone or soft tissue augmentation. Effect of zirconia or titanium abutments on peri-implant soft tissues. Summary and consensus statements. The 4th EAO Consensus Conference 2015 (2015) Sicilia A, Quirynen M, Fontolliet A, Francisco H, Friedman A, Linkevicius T, Lutz R, et al. Journal article Long-term outcomes of bone augmentation on soft and hard-tissue stability: a systematic review (2015) Lutz R, Neukam FW, Simion M, Schmitt CM Journal article Effect of deproteinized bovine bone matrix coverage on the resorption of iliac cortico-spongeous bone grafts - a prospective study of two cohorts (2014) Wiltfang J, Jaetschmann N, Hedderich J, Neukam FW, Schlegel A, Gierloff M Journal article Long-term changes in graft height after maxillary sinus augmentation, onlay bone grafting, and combination of both techniques: a long-term retrospective cohort study (2014) Schmitt C, Karasholi T, Lutz R, Wiltfang J, Neukam FW, Schlegel KA Journal article The effect of load on heat production, thermal effects and expenditure of time during implant site preparation - an experimental ex vivo comparison between piezosurgery and conventional drilling (2014) Stelzle F, Frenkel C, Riemann M, Knipfer C, Stockmann P, Nkenke E Journal article Histological results after maxillary sinus augmentation with Straumann® BoneCeramic, Bio-Oss®, Puros®, and autologous bone. A randomized controlled clinical trial (2013) Schmitt C, Döring H, Schmidt T, Lutz R, Neukam FW, Schlegel KA Journal article Bio-Oss® blocks combined with BMP-2 and VEGF for the regeneration of bony defects and vertical augmentation (2013) Schmitt C, Lutz R, Döring H, Lell M, Ratky J, Schlegel KA Journal article Osseointegration of SLActive implants in diabetic pigs (2013) Schlegel KA, Prechtl C, Möst T, Seidl C, Lutz R, von Wilmowsky C Journal article Biofunctionalization of the implant surface with different concentrations of a synthetic peptide (P-15) (2013) Lutz R, Prechtl C, Nonhoff J, Weisel T, Damien CJ, Schlegel KA Journal article Critical size defect regeneration using PEG-mediated BMP-2 gene delivery and the use of cell occlusive barrier membranes - the osteopromotive principle revisited (2013) Wehrhan F, Amann KU, Molenberg A, Lutz R, Neukam FW, Schlegel KA Journal article