This prospective study summarizes the clinical outcome in 60 cases of augmentative procedures with special regard towards amount of swelling, pain and possible inflammatory effects or complicationsas well as handling and histological features in 2-stage procedures when possible. The low expression of resorbtive cell reactions and de novo bone formation up to the former membrane level show the excellent tissue integration. There were no membrane associated complications. The stability of the bone substitute war perserved intil intergration was complete even in difficult cases. In those 5 cases with dehiscences and partial or complete loss of augmentation material the cause was either the dimension of the defekt or the muscular activity in the augmented area. Schlagwörter: Augmentationen, Sinusbodenelevation, bone substitutes, Knochenaufbaumaterial, Implantate