California Registered Dental Assistant (RDA) Written Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Master the California Registered Dental Assistant (RDA) Written Exam with our comprehensive practice quiz. Tailored to mimic real exam conditions, it's your key to unlocking success and advancing your dental assisting career.

Practice this question and more.

What is used during a crown and bridge preparation to displace gingival tissue?

Gingival retraction cord
Dental floss
Mouthwash
Toothbrush

The correct answer is: Gingival retraction cord

Gingival retraction cord is used during a crown and bridge preparation to displace the gingival tissue. This is done to increase the visibility and accessibility of the tooth structure being worked on. Dental floss, mouthwash, and a toothbrush are not suitable for this purpose as they do not have the same effect of gently pushing the gingival tissue away from the tooth. It is important to use the correct tools and methods during a crown and bridge preparation to ensure a successful treatment.