For a sickle scaler or universal curet, the internal angle f…

For a sickle scaler or universal curet, the internal angle formed by the junction of the instrument face and the lateral surface is between 70o  and 80o.  For an area-specific curet, the internal angle formed by the junction of the instrument face and the lateral surface also is between 70o and 80o.

The curved left and right ultrasonic inserts are designed to…

The curved left and right ultrasonic inserts are designed to: 1. adjust to convex root anatomy 2. adapt to concave root anatomy 3. adapt the back and lateral sides of the insert to the root surface 4. adapt only the lateral side of the insert to the root surface.