California RDA Written Practice Exam 2025 – Full Prep Guide

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How would an arch wire be sized for a patient without placing it into the patient's mouth?

By guessing

Study model and used arch wire

An arch wire would be sized for a patient by using a study model and a used arch wire. This option is considered more accurate and precise compared to the other options provided. Option A, guessing, is not a recommended method as it can lead to incorrect sizing and potentially harm the patient. Option C, using an average size, may not be suitable for every patient as each individual's mouth is unique and may require a customized sizing. Option D, through digital simulation, is a more advanced method and may not be readily available for all dental professionals. Using a study model and used arch wire allows for a hands-on approach and provides an accurate representation of the patient's mouth.

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Using an average size

Through digital simulation

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