Answer
Jun 10, 2024 - 01:13 PM
The SmartPeg, with its magnet on top, works like a small tuning fork. The magnet is emitted with magnetic pulses from the probe which makes the SmartPeg vibrate. Due to the stiffness in the interface between the implant surface and the bone the SmartPeg will vibrate accordingly. The more dense bone the higher stability, the higher frequency and the higher ISQ value. The ISQ value will be displayed on the screen within a second after the measurement is done.
If you start with low mechanical stability at placement the value will increase due to the increased stability caused by osseointegration. If the initial value is in the high range, e.g. 75 ISQ it will stay about the same even after osseointegration, since the initial mechanical stability was already so high. If the implant does not osseointegrate the ISQ value will decrease significantly and should be taken as a warning.