Profile: Keystone Dental, GmbH develops and markets precision surgical & prosthetic devices for the restoration of damaged tissues. Our product line includes dental implant systems, prosthetic components, surgical and restorative instrumentation. Tefgen-FD and Tefgen-Plus membranes are non-(n-PTFE) membranes for the treatment of periodontal defects and ossa. Our product calmatrix® is a calcium-sulphate-bone replacement binder. The product contains calcium sulfate alpha-hemihydrate, carboxymethylcellulose (CMC) & sterile water. Our product calforma® is a calcium sulfate bone graft barrier which prevents the penetration of soft tissues, cells and bacteria in the defected areas.