Study of Bone Preservation When OsseoSpeed™ Implants Are Placed Immediately Following Tooth Extraction

Exclusion Criteria

• •Untreated rampant caries and uncontrolled periodontal disease
• •Absence of adjacent (mesial and/or distal) natural tooth root
• •Uncontrolled diabetes (subjects history does not reveal the absence of control of insulin-dependent / non-insulin dependent Diabetes Mellitus)
• •Current alcohol or drug abuse
• •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
• •History of radiation in the head and neck region
• •History of chemotherapy within 5 years prior to surgery
• •Unable or unwilling to return for follow-up visits for a period of 3 years and 6 months
• •Unrealistic esthetic demands
• •Unlikely to be able to comply with study procedures according to Investigators judgement
• •Involvement in the planning and conduct of the study (applies to both Astra Tech staff or staff at the investigational site)
• •Previous enrolment in this study