Clinical Guidelines

Osstell uses Resonance Frequency Analysis to determine implant stability and osseointegration. The result is presented as an ISQ value of 1-100.
The higher the ISQ, the more stable the implant.
Measure at implant placement for a baseline reading and again before final restoration.

The Osstell ISQ Scale

ISQ, or Implant Stability Quotient, is a scale from 1 to 100 and is a measure of the stability of an implant. The ISQ scale has a non-linear correlation to micro mobility. With more than 1200 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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