Education
Clinical guidelines
Osstell uses Resonance Frequency Analysis (RFA) to determine implant stability, shown as an ISQ value from 1 to 99. A higher ISQ means a more stable implant. Measure at implant placement for a baseline reading and again before final restoration. With OsstellConnect, our online platform for tracking and analyzing ISQ data, you can monitor implant stability over time to support clinical decisions.
The Osstell ISQ scale
Implant Stability Quotient (ISQ) is an objective world standard for measuring implant stability. The clinical range of ISQ is normally 55-80. Higher values are generally observed in the mandible than in the maxilla.The ISQ scale has a non-linear correlation to micro mobility. With more than 1500 scientific references, we now know that high stability means >70 ISQ, between 60-69 is medium stability and < 60 ISQ is considered as low stability.
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The technique behind Osstell
Osstell’s patented technology uses Resonance Frequency Analysis (RFA) that measures the frequency with which a device vibrates. By comparing resonance frequencies, the stability of a dental implant can be determined as the resonance frequency changes with different stabilities.
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How ISQ correlates to torque
Torque is sometimes used to describe the stability of an implant. However, torque does not necessarily correlate to implant stability. Torque measures the rotational friction between the implant and the bone combined with the force required to cut the bone if that is the case, and the pressure force from the surrounding bone.
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How ISQ correlates to BIC
BIC, or Bone to Implant Contact, is the percentage of the implant surface in contact with bone on a microscopic level.
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