Dental Hygiene Theory Ultrasonic PP
T or F: piezo devices use electrical energy to activate crystals within the hand piece to vibrate the
instrument tip - ✔✔ correct answer True
T or F: magneto devices transfer electrical energy to metal stacks made of nickel-iron alloy or to a
ferrous rod to vibrate the insert - ✔✔ correct answer True
T or F: you have the same tactile sensitivity with an ultrasonic as a handpiece - ✔✔ correct answer
False
T or F: the piezo or magneto instrumentation is not technique sensitive - ✔✔ correct answer False
Frequency - ✔✔ correct answer Measure of how many times a powered working end vibrates per
second
Amplitude - ✔✔ correct answer Measure of how far the powered working end moves back and
fourth
T or F: research finds no difference between efficiently of high powered or medium powered
instrumentation; to maximize patient comfort and minimize potential damage to tooth surface, the
power setting should rarely be placed above the medium power setting - ✔✔ correct answer True
T or F: clinical position is not same for ultrasonic and piezo use - ✔✔ correct answer False
T or F: patient position during ultrasonic or piezo instrumentation is the same as hand
instrumentation - ✔✔ correct answer True
How should your grasp be when using powered instrumentation? - ✔✔ correct answer A light,
relaxed grasp
What are the two basic types of tips for powered instrumentation? - ✔✔ correct answer Standard
tips: larger in size with a shorter shank length
Slim perio tips: up to 40% smaller in size with longer, more complex shanks
Standard tips remove: - ✔✔ correct answer Moderate to heavy deposited above gingival margin and
shallow pockets (blue tip)
T or F: piezo devices use electrical energy to activate crystals within the hand piece to vibrate the
instrument tip - ✔✔ correct answer True
T or F: magneto devices transfer electrical energy to metal stacks made of nickel-iron alloy or to a
ferrous rod to vibrate the insert - ✔✔ correct answer True
T or F: you have the same tactile sensitivity with an ultrasonic as a handpiece - ✔✔ correct answer
False
T or F: the piezo or magneto instrumentation is not technique sensitive - ✔✔ correct answer False
Frequency - ✔✔ correct answer Measure of how many times a powered working end vibrates per
second
Amplitude - ✔✔ correct answer Measure of how far the powered working end moves back and
fourth
T or F: research finds no difference between efficiently of high powered or medium powered
instrumentation; to maximize patient comfort and minimize potential damage to tooth surface, the
power setting should rarely be placed above the medium power setting - ✔✔ correct answer True
T or F: clinical position is not same for ultrasonic and piezo use - ✔✔ correct answer False
T or F: patient position during ultrasonic or piezo instrumentation is the same as hand
instrumentation - ✔✔ correct answer True
How should your grasp be when using powered instrumentation? - ✔✔ correct answer A light,
relaxed grasp
What are the two basic types of tips for powered instrumentation? - ✔✔ correct answer Standard
tips: larger in size with a shorter shank length
Slim perio tips: up to 40% smaller in size with longer, more complex shanks
Standard tips remove: - ✔✔ correct answer Moderate to heavy deposited above gingival margin and
shallow pockets (blue tip)
