Study on OsseoSpeed™ Implants in Patients Missing All Teeth in the Upper Jaw, Restored With Provisional Teeth Within 24 Hours

Inclusion Criteria:

• Provision of informed consent
• Aged 20 years and over
• History of totally edentulous maxilla of at least three months
• Radiographic finding indicating bone quality class 3 or 4 (Lekholm and Zarb) in the maxilla
• Radiographic finding indicating bone quantity class C, D or E (Lekholm and Zarb) in the maxilla
• Presence of natural teeth, partial prosthesis and/or implants in the mandible, within positions 35-45 (according to the FDI digit system)
• Deemed by the investigator as likely to present an initially stable implant situation suitable for immediate loading.

Exclusion Criteria:

• Unlikely to be able to comply with study procedures, as judged by the investigator
• Uncontrolled pathologic processes in the oral cavity
• Known or suspected current malignancy
• History of radiation in the head and neck region
• History of chemotherapy within 5 years prior to surgery
• Systemic or local disease or condition that would compromise post-operative healing and/or osseointegration
• Uncontrolled Diabetes Mellitus
• Corticosteroids or any other medication that would compromise post-operative healing and/or osseointegration
• History of bone augmentation in the maxilla within 6 months prior to surgery
• Known pregnancy at time of enrolment
• Present alcohol and/or drug abuse
• Current use of tobacco or history of tobacco use within 6 months prior to surgery
• Need for interpreter