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 NOCTI Dental Assisting exam has 179 questions and runs 3 hours.
These 10 free NOCTI Dental Assisting questions are organized by exam domain, so you can see how each part of the NOCTI Dental Assisting Assessment blueprint is tested. Reveal the answer and explanation under each question.
A dentist asks a newly hired dental assistant to expose bitewing radiographs. The state requires a radiography permit, and the assistant has not yet obtained one. What should the assistant do?
Correct answer: A - Decline the task and explain that the state permit is required
A dentist has removed tissue from a persistent tongue lesion and needs a specialist to provide microscopic identification of the disease process. Which specialty is the best match?
Correct answer: B - Oral and maxillofacial pathology
An adult patient has specifically instructed the practice not to share information with a spouse. The spouse later calls, provides the patient's date of birth, and asks what treatment was completed. How should the assistant respond?
Correct answer: D - Do not disclose it without patient authorization or verified legal authority
A dental office uses 6 boxes of examination gloves per operating day. Supplier lead time is 4 operating days, safety stock is 10 boxes, and only 20 usable boxes remain. Which inventory decision is correct?
Correct answer: A - Order now; the reorder point is 34 boxes
After a used anesthetic needle punctures an assistant's finger, the needle is secured in the sharps container. Which sequence should follow?
Correct answer: C - Wash with soap and water, report immediately, and obtain prompt medical evaluation
A sterilizer printout shows that time, temperature, and pressure were achieved. The external indicator changed, but the internal chemical indicator in one pouch did not. How should that pouch be handled?
Correct answer: B - Withhold it from use, reprocess it, and investigate the failed indicator
A removable high-speed handpiece has just been used for a restorative procedure. What is the appropriate reprocessing method before it is used on another patient?
Correct answer: A - Clean, lubricate as directed, and heat sterilize it
An alginate impression is accidentally left immersed in water beyond the permitted disinfection time. It is visibly swollen when retrieved. Which dimensional-change mechanism occurred?
Correct answer: B - Imbibition, caused by uptake of water into the gel
A patient who hurried from the parking lot has an initial blood pressure of 168/94 mm Hg. The patient has no chest pain, dyspnea, neurologic symptoms, or severe headache. What is the best next step before a treatment decision is made?
Correct answer: D - Allow seated rest, repeat the measurement correctly, and report the result
An anxious patient remains responsive but begins breathing rapidly and reports tingling around the mouth and cramping in both hands. Oxygen saturation is 99%, and there is no wheeze, rash, or swelling. Which immediate response best fits the presentation?
Correct answer: C - Stop treatment, position the patient comfortably upright, and coach slower breathing
The NOCTI Dental Assisting exam also covers these domains. Drill them in the full free practice test:
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