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.

Where would you find a Class I restoration in the mouth?

Occlusal surface
Buccal surface
Lingual surface
Facial surface

The correct answer is: Occlusal surface

A Class I restoration, also called an occlusal restoration, is found on the occlusal surface of a tooth, which is the chewing surface of the tooth. This type of restoration is used to repair decay or damage on the biting surface of the tooth. Options B, C, and D refer to the buccal, lingual, and facial surfaces of the tooth, which are all different from the occlusal surface. In a Class I restoration, the treatment only involves the occlusal surface and not the buccal, lingual, or facial surfaces of the tooth. Therefore, these options are incorrect.