FPC 2 Exam 2026 - Periodontal Screening and Recording (PSR) and Probing Practice Test with Free Practice Questions

In the modified pen grasp, the ring finger serves as the fulcrum. This finger typically rests on a tooth surface, providing a stable, fixed pivot point for the hand. With the instrument held between the thumb and index finger and supported by the middle finger, the ring finger’s contact with a tooth lets you pivot and maneuver the working end with small, precise movements. This stability reduces hand strain and helps control the angle and pressure you apply during instrumentation, which is essential for safe, effective probing and scaling. The thumb and index finger manage the grip, while the middle finger aids balance, but it’s the ring finger that supplies the steady fulcrum.