Five-year follow-up of the Astra Tech OsseoSpeed Implant

Oct. 5, 2009
The five-year follow-up study on OsseoSpeed implants confirms the successful results presented in previous studies.

MÖLNDAL, Sweden--A five-year follow-up study was made by Dr. Steveling and co-workers at the Department of Oral and Maxillofacial Surgery at the Heidelberg University in Germany. The conclusion is that the OsseoSpeed implant shows very good results, also in compromised sites when using an early loading protocol.

"The mean marginal bone level change reported was -0.03 millimeters after five years, which is extremely good," says Dr. AnnaKarin Lundgren, head of Scientific Management at Astra Tech Dental.

The OsseoSpeed surface characteristics and properties have been reviewed in numerous published articles revealing positive bone response. Results from the extensive OsseoSpeed clinical study program show good functionality, and predictable and maintained marginal bone levels with a mean marginal bone level reduction of 0.3 mm. The maintained marginal bone levels are also confirmed in prospective studies with three and five year results.

There is no significant dip in Implant Stability Quotient values traditionally seen at implants two to six weeks after installation. This is interpreted as a continuous gain in osseointegration and stability. Published data shows that the OsseoSpeed implant can be safely used with a reported survival rate between 94.5% to 100%, including the use of immediate loading protocol even in the atrophic edentulous maxilla, in sinus lifted maxillary posterior jaw sites, immediate installation in extraction sockets, and implants placed in atrophied mandibles close to the nerve.

OsseoSpeed is one of four key features of the Astra Tech BioManagement Complex. The other three key features are Conical Seal Design, Connective Contour, and MicroThread, each with more than 17 years of clinical experience and documentation.

"The result of this study proves that we were right when challenging the current standard norm. Hopefully the dental academic society will look into the data and set a new standard norm for implant treatment success. This will force less serious implant companies to perform and present solid, reliable documentation, all for the benefit of the patient. Only three implant systems met the criteria in the above study, but it is even more striking that 90% of all implant suppliers on the market are unable to show any clinical documentation whatsoever on their implant systems, " says Dr. Björn Delin, Business Unit Director, Dental at Astra Tech in Sweden.

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