Immediate Function of NobelSpeedy Shorty and Brånemark System® Mk III Shorty Implants in Daily Use

The primary endpoint was the change in marginal bone levels (in mm) from the time of implant insertion to follow-up visits (3, 6, 12, 36 and 60 months).

Further endpoints were:

• cumulative survival rates of the implants
• soft tissue parameters (papilla index, bleeding on probing)
• plaque formation

Inclusion criteria

• The subjects should have an osseous architecture enough to receive an implant with a diameter of at least 3.75 mm for Brånemark System Mk III Shorty or 4 mm for NobelSpeedy Shorty and a sufficient amount of bone for placing implants with a length of 7 mm.
• The final tightening torque at installation should be 35-45 Ncm without further rotation and should not exceed 45 Ncm.
• The subject as well as the implant site(s) should fulfill criteria for immediate provizionalization.
• Immediate insertion (e.g. placement of the implant immediately after extraction) will not constitute an exclusion criterion.
• The implants site(s) should be free from extraction remnants.
• The subject should be healthy and compliant with good oral hygiene.
• The subject should be available for the 5-year term of the investigation.
• Favorable and stable occlusal relationship

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.
• Any disorders in the planned implant area such as previous tumors, chronic bone disease, or previous irradiation.
• Severe bruxism or other destructive habits.