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 generallly observed in the mandible than in the maxilla.

The overall average value of all implants over time is approximately 70 ISQ. If the initial ISQ value is high, a small drop in stability normally levels out with time. A big drop in stability or decrease should be taken as a warning sign. Lower values are expected to be higher after the healing period. The opposite could be a sign of an unsuccessful implant and actions should be considered.
Read more about ISQ on www.isqforum.com