California Registered Dental Assistant (RDA) Written Practice Exam

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What type of impressions are elastomeric materials selected for?

Preliminary
Final
Bite registration
Orthodontic

The correct answer is: Final

Elastomeric materials are highly durable and able to withstand high levels of pressure. This makes them ideal for creating final impressions, which require greater accuracy and detail than preliminary impressions. Preliminary impressions are typically used to create a rough outline of the patient's teeth, while final impressions are used to create a more precise mold for creating dental restorations. Bite registrations are used for recording the patient's bite, and orthodontic materials are used specifically for orthodontic treatments. Therefore, while elastomeric materials may also be used for other purposes, they are primarily selected for producing final impressions.