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Nbdhe Exam Prep: 200+ Practice Questions & Answers With Rationales - Latest 2026 Edition

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PASS YOUR NBDHE EXAM ON THE FIRST TRY! This comprehensive test bank features over 200 practice questions with detailed rationales covering every major topic on the National Board Dental Hygiene Examination. Each question is designed to mirror the actual exam format, teaching you why answers are correct while reinforcing essential dental hygiene concepts. From dental anatomy and periodontology to pharmacology, radiology, community health, and ethics - this guide covers it all!

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NBDHE Practice Test Latest 2026/2027 Actual Exam|

Complete Questions and Correct Verified Answer/

Already Graded A+

1. During swallowing, the hyoid bone moves downward. During

swallowing, the larynx elevates.

• A. Both statements are true

• B. Both statements are false

• C. The first statement is true, the second statement is false

• D. The first statement is false, the second statement is true

Correct Answer: D

Rationale: During swallowing, the hyoid bone moves upward as

the larynx elevates. After moving upward, the hyoid bone moves

forward then returns to its starting position. The larynx elevates

to protect the airway during the swallowing process .



2. Which nervous system produces the fight-or-flight reaction?


1

, • A. Parasympathetic

• B. Sympathetic

• C. Peripheral

• D. Central

Correct Answer: B

Rationale: The sympathetic nervous system releases

norepinephrine to raise the heart rate and elevate blood

pressure, triggering the fight-or-flight reaction in stressful

situations. This response prepares the body for emergency

action .



3. A patient is experiencing symptoms related to Bell's palsy.

Which cranial nerve is suffering from a motor deficit?

• A. Facial (CN VII)

• B. Trigeminal (CN V)

• C. Trochlear (CN IV)

• D. Hypoglossal (CN XII)

2

,Correct Answer: A

Rationale: Bell's palsy causes loss of movement to muscles due to

lesions in the facial nerve (CN VII). This condition is typically

unilateral and usually temporary, though it may take several

weeks before normal function returns .



4. What is mobilized in and out of the blood during bone

remodeling?

• A. Canaliculi

• B. Osteoclasts

• C. Calcium

• D. Osteoblasts

Correct Answer: C

Rationale: Calcium is mobilized in and out of the bloodstream

during bone remodeling. Osteoclasts resorb bone, releasing

calcium into the blood, while osteoblasts form new bone,



3

, depositing calcium. This dynamic process maintains calcium

homeostasis .



5. Which of the following cranial nerves pass through the

foramen ovale of the sphenoid bone?

• A. Trigeminal mandibular division

• B. Nasopalatine nerve

• C. Trigeminal maxillary division

• D. Abducent nerve

Correct Answer: A

Rationale: The mandibular division of the trigeminal nerve (V3)

passes through the foramen ovale of the sphenoid bone. The

maxillary division (V2) passes through the foramen rotundum,

and the ophthalmic division (V1) passes through the superior

orbital fissure .




4

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