Randomized, Open Investigation Evaluating the Efficacy of Nobel Biocare SFB and CFB Implants

Inclusion Criteria: * The subject should be in need of an implant supported fixed restoration * The subjects should have sufficient bone volume and density i.e. an osseous architecture in the planned implant placement region sufficient to receive implants with a diameter of 3.5 mm and a length of at least 10 mm. * The subject as well as the implant sites should fulfill criteria for immediate functional tem-porization within 24 h. * The implant sites should be healed and free from infection. Exclusion Criteria: * Alcohol or drug abuse as noted in patient records or in patient history. * Health conditions, which do not permit the surgical procedure. * Reason to believe that the treatment might have a negative effect on the subject's total situation (psychiatric problems), as noted in patient records or in patient history. * The subject is not able to give her/his informed consent to participate. * The need of bone augmentation before implant installation to obtain a prosthetically correct implantation transversally. However, a minor augmentation procedure to cover exposed threads or interproximal / buccal grafting due to deficient sites is not an exclusion criteria. * Any disorders in the planned implant area such as previous tumors, chronic bone disease, or previous irradiation. * Uncontrolled diabetics will be excluded. * Severe bruxism or other destructive habits. * Immediate insertion (e.g. placement of the implant immediately after extraction) consti-tutes an exclusion criterion.