California Registered Dental Assistant (RDA) Written Practice Exam

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What instrument is used to smooth the edges of a stainless steel crown after adjusting its height?

Diamond bur

High-speed handpiece

Green stone

A diamond bur is usually used for cutting into and shaping the stainless steel crown, not necessarily for smoothing the edges.

A high-speed handpiece is typically used for polishing metals and finishing procedures, so it could be a potential option for smoothing the edges of a stainless steel crown, but the green stone is the more commonly used instrument for this specific task.

An amalgam carrier is used for carrying and placing amalgam material, which is not relevant for smoothing the edges of a stainless steel crown.

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Amalgam carrier

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