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Accelerated Academy Dental Assisting Midterm Practice Test

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What cannot pass through an ultrasonic device during dental procedures?
Correct Answer:
Cavitron tips and dental handpieces
Explanation:
Understanding how an ultrasonic device works helps here. An ultrasonic scaler delivers energy through a small tip that’s connected to the handpiece, with irrigation water helping to cool and flush away debris. It isn’t a conduit through which other materials travel. The parts that cannot pass through the device are the actual instrument components—the Cavitron tip and the dental handpiece. They are the active end of the system, not substances that move through the unit. In contrast, the materials listed (calcium hydroxide paste, dental varnish, amalgam) are substances used during treatment and don’t serve as part of the device’s internal flow path, so they don’t function as “passing through” items.

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