California Registered Dental Assistant (RDA) Written Practice Exam

Question: 1 / 400

What oral conditions contraindicate the use of an ultrasonic scaler?

Patients with demineralization, exposed dentin, narrow periodontal pockets

An ultrasonic scaler may not be suitable for patients with demineralization, exposed dentin, or narrow periodontal pockets because the high frequency vibrations can cause discomfort or damage to these conditions. On the other hand, braces would not be a contraindication for the use of an ultrasonic scaler, as long as the practitioner takes caution and avoids direct contact with the brackets and wires. Patients with healthy gums would not be affected by the ultrasonic scaler and it can actually help to remove plaque and bacteria from the gumline. Similarly, the age of a patient does not necessarily determine whether or not an ultrasonic scaler can be used, as long as the individual is able to tolerate the vibrations and the procedure is performed by a trained professional.

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Patients with braces

Patients with healthy gums

Patients under 12 years old

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