Study on OsseoSpeed™ Implants in Patients Missing 2-5 Teeth in the Posterior Lower Jaw, Restored With Permanent Teeth Attached 6-7 Weeks Later

Inclusion Criteria: * Provision of written informed consent * 18 years of age and over * Edentulous in the posterior mandible, Kennedy class I or class II. Last natural tooth, or previously restored implant in function is canine or first bicuspid. * Deemed by the investigator as likely to present an initially stabile implant situation suitable for early loading Exclusion Criteria: * Untreated caries and/or periodontal disease of residual dentition * History of edentulism in the area of implant placement of less than two months * Current need for pre-surgical bone or soft tissue augmentation in the planned implant area. * History of pre-surgical bone or soft tissue augmentation, within12 months, in the planned implant area. * Any systemic or local disease or condition that would compromise post-operative healing and/or osseointegration * Need for systemic corticosteroids or any other medication that would compromise post-operative healing and/or osseointegration * Present alcohol or drug abuse * Unable or unwilling to return for follow-up visits for a period of 5 years * Current use of smoking tobacco * Pregnancy or lactation at the time of enrollment