Study to Compare Marginal Bone Loss Around Implants From Two Dental Implant Systems.

Inclusion Criteria: * Provision of written informed consent * Age 18 - 75 years * Partial edentulism, Kennedy class I or II, last natural tooth must be cuspid or first bicuspid * Edentulous in the area/s if implant placement for more than 2 months Exclusion Criteria: * Untreated caries and/or periodontal disease of residual dentition * Need for pre-surgical bone or soft tissue augmentation in the planned implant area/s. * Absence of occlusal stability in centric occlusion * Any systemic or local disease or condition that would compromise post-operative healing and/or osseointegration * Systemic corticosteroids or any other medication that would compromise post-operative healing and/or osseointegration * Pregnancy * Present alcohol or drug abuse * Tobacco smoking during the last 6 months * Unable or unwilling to return for follow-up visits for a period of 3 years