Locate any remaining subgingival calculus by the use of an explorer
or probe. Feel the irregularities on the cemental surfaces of the
roots. Note their position for the next step.
Evaluate pocket depths and amount of mobility with a graduated
probe. For pockets greater than 3-4 mm assess whether the bulk of
the pocket is apical or coronal to the CEJ.
Tactile senses are important here, as no more than one ounce of
pressure should be used in the sulcus.