Question: What are some advantages of ultrasonic instrumentation? Describe how they would benefit during patient care in comparison to hand instrumentation. Water plays a multifunctional role during ultrasonic instrumentation; what is its primary role in periodontal therapy? What can happen from insufficient water to the powered working end of an ultrasonic scaler? How can you tell if you have sufficient water flow? What are some health concerns for power instrumentation, and what can be done to help reduce the risk of those health concerns?