Violation

Which of the following may affect probing depth measurements of a periodontal pocket? 1. Probing force. 2. Diameter of the probe tip. 3. Angulation of the probe. 4. Subgingival calculus.

All of the above.

(1) (2) (3)

(1) and (3)

(2) and (4)

(4) only

Please describe the matter of abuse