Missing central incisor in addition to generalized severe chronic periodontitis. A case by Dr Stephan Rebele, München, Germany.

The patient wished to have a fixed reconstruction but her financial possibilities were limited. Despite this limitation she received a fixed solution involving implant-supported cantilevers.

Partially endentulous patient with xerostomia due to Sjögren-Syndrome needs new reconstructions. The risk of implant placement has to be carefully evaluated.

The retention of the upper denture was improved by implants. In addition the implants allowed to design the denture without palatal coverage to increase the patient's comfort.

Primary augmentation of a large bone defect. Case treated by Dr. Ui-Won Jung, Yonsei University Seoul, Korea.

Dr. Dominik Büchi performed an immediate implant placement in the aesthetic area. Therefore the esthetic risk factors had to be evaluated carefully before starting the treatment.

Female patient *1979 by Dr. Oberhansl (Dr. Nölken). The aggressive periodontitis was treated during 3 years. Then, a fractured molar was replaced with an immediate implant.

Various factors may cause major bone loss resulting in functional and esthetic problems. In this module, Prof. Hendrik Terheyden reviews the mechanisms and consequences of bone resorption and explains the treatment options for specific situations in partially edentulous and edentulous patients.

In this module Prof. Christer Dahlin explains the principles of minor bone regeneration procedures. The focus is on the biologic principles of GBR, the importance and the choice of membranes, the characteristics of different bone substitute materials and the potential future developments.