10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The GC exam has 95 questions and runs 1 hour 15 minutes.
These 10 free GC questions are organized by exam domain, so you can see how each part of the DANB General Chairside Assisting (GC) Examination blueprint is tested. Reveal the answer and explanation under each question.
A 22-year-old patient becomes visibly anxious before an extraction, and her respirations become rapid and shallow. She reports lightheadedness and tingling in her fingertips and around her mouth. After treatment is stopped and she is positioned upright, which action is MOST appropriate?
Correct answer: B - Coach slow, controlled breathing into her cupped hands
Before a restorative appointment, a patient's blood pressure is recorded as 136/84 mm Hg. Using the 2017 ACC/AHA categories, this reading is classified as:
Correct answer: C - Stage 1 hypertension
A laboratory prescription from an overseas dental laboratory identifies the tooth as 36 in the FDI (ISO) two-digit system. Which tooth is this in the Universal Numbering System?
Correct answer: C - Tooth 19
A patient is dispensed 0.12% chlorhexidine gluconate rinse following periodontal therapy. Which instruction is MOST important for the patient to follow?
Correct answer: D - Separate its use from toothpaste by at least 30 minutes
A patient is instructed not to drink through a straw for 24 hours after a mandibular molar extraction. This instruction is given PRIMARILY to prevent:
Correct answer: B - Dislodging of the blood clot that fills the socket
Under the OSHA Bloodborne Pathogens Standard, an employer must make the hepatitis B vaccination series available at no cost to a newly hired clinical dental assistant within:
Correct answer: A - 10 working days of initial assignment to at-risk duties
A left-handed dentist is restoring tooth 19. Using the clock concept with the patient's head at 12 o'clock, the assistant should be seated in which zone?
Correct answer: C - 8 to 10 o'clock
Before the dental dam clamp is placed on the anchor tooth, a length of dental floss is tied to the bow of the clamp. The PRIMARY purpose of this floss is to:
Correct answer: A - Retrieve the clamp if it breaks or slips off the tooth
A patient is scheduled for a Class IV composite restoration on tooth 8. When should the shade be selected?
Correct answer: C - Before isolation begins, while the tooth is still moist
An amalgam mix is delivered to the preparation and appears dull and grainy, and it crumbles as it is condensed. This mix was MOST likely:
Correct answer: D - Undertriturated, which weakens the restoration
The GC exam also covers these domains. Drill them in the full free practice test:
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