California RDA Written Practice Exam 2025 – Full Prep Guide

Question: 1 / 400

How can exposure of dental healthcare personnel to nitrous oxide gases be reduced?

By ensuring good room ventilation

By using a scavenger system on the nitrous oxide equipment

Using a scavenger system on the nitrous oxide equipment is the best option for reducing exposure to the gas. This system collects and removes excess gas from the room, making it safer for dental healthcare personnel. While good room ventilation and wearing a mask may also help reduce exposure, they are not as effective as a scavenger system. Limiting the duration of procedures may also help reduce exposure, but it is not a reliable or preventative measure.

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By limiting the duration of procedures

By wearing a mask

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