Expanded Functions Dental Assistant (EFDA) Exam 2026:
Comprehensive Professional Practice Examination — Restorative
Procedures, Dental Materials, Infection Control, Patient Safety,
Clinical Assisting & Dental Ethics — 190 Multiple-Choice Questions
with Answers & Detailed Rationales
SECTION 1: ANATOMY AND PHYSIOLOGY (Questions 1-25)
Question 1
Which structure forms the primary articulation between the mandible and the temporal
bone?
A. Temporomandibular ligament
B. Condylar process
C. Coronoid process
D. Zygomatic arch
Correct Answer: B
Explanation: The condylar process of the mandible articulates with the mandibular fossa of
the temporal bone, forming the TMJ essential for jaw movement.
Question 2
A patient reports difficulty swallowing and a sensation of food sticking in the throat. Which
anatomical structure is most likely involved?
,A. Soft palate
B. Oropharynx
C. Epiglottis
D. Uvula
Correct Answer: B
Explanation: The oropharynx is the passageway for both food and air; dysfunction here
commonly causes dysphagia and globus sensation during swallowing.
Question 3
During a dental procedure, a patient suddenly experiences profuse bleeding from the floor
of the mouth. Which artery is most likely compromised?
A. Lingual artery
B. Facial artery
C. Sublingual artery
D. Mental artery
Correct Answer: C
Explanation: The sublingual artery supplies the floor of the mouth and is vulnerable during
surgical procedures in the submandibular region.
Question 4
Which cranial nerve provides sensory innervation to the anterior two-thirds of the tongue?
,A. Glossopharyngeal nerve
B. Hypoglossal nerve
C. Trigeminal nerve
D. Facial nerve
Correct Answer: C
Explanation: The lingual branch of the trigeminal nerve (V3) provides general sensation to
the anterior two-thirds of the tongue.
Question 5
A patient presents with paralysis of the muscles of facial expression on the right side. Which
nerve is affected?
A. Trigeminal nerve
B. Facial nerve
C. Glossopharyngeal nerve
D. Vagus nerve
Correct Answer: B
Explanation: The facial nerve (CN VII) innervates muscles of facial expression; damage causes
ipsilateral facial paralysis known as Bell's palsy.
Question 6
The parotid gland secretes saliva primarily through which duct?
, A. Wharton's duct
B. Bartholin's duct
C. Stensen's duct
D. Rivinus duct
Correct Answer: C
Explanation: Stensen's duct carries parotid saliva to the oral cavity, opening adjacent to the
maxillary second molar.
Question 7
Which bone forms the anterior portion of the hard palate?
A. Maxilla
B. Palatine bone
C. Vomer
D. Sphenoid bone
Correct Answer: A
Explanation: The palatine process of the maxilla forms the anterior two-thirds of the hard
palate, with the palatine bones forming the posterior portion.
Question 8
A patient exhibits limited ability to protrude the tongue. Which muscle is most likely
affected?
Comprehensive Professional Practice Examination — Restorative
Procedures, Dental Materials, Infection Control, Patient Safety,
Clinical Assisting & Dental Ethics — 190 Multiple-Choice Questions
with Answers & Detailed Rationales
SECTION 1: ANATOMY AND PHYSIOLOGY (Questions 1-25)
Question 1
Which structure forms the primary articulation between the mandible and the temporal
bone?
A. Temporomandibular ligament
B. Condylar process
C. Coronoid process
D. Zygomatic arch
Correct Answer: B
Explanation: The condylar process of the mandible articulates with the mandibular fossa of
the temporal bone, forming the TMJ essential for jaw movement.
Question 2
A patient reports difficulty swallowing and a sensation of food sticking in the throat. Which
anatomical structure is most likely involved?
,A. Soft palate
B. Oropharynx
C. Epiglottis
D. Uvula
Correct Answer: B
Explanation: The oropharynx is the passageway for both food and air; dysfunction here
commonly causes dysphagia and globus sensation during swallowing.
Question 3
During a dental procedure, a patient suddenly experiences profuse bleeding from the floor
of the mouth. Which artery is most likely compromised?
A. Lingual artery
B. Facial artery
C. Sublingual artery
D. Mental artery
Correct Answer: C
Explanation: The sublingual artery supplies the floor of the mouth and is vulnerable during
surgical procedures in the submandibular region.
Question 4
Which cranial nerve provides sensory innervation to the anterior two-thirds of the tongue?
,A. Glossopharyngeal nerve
B. Hypoglossal nerve
C. Trigeminal nerve
D. Facial nerve
Correct Answer: C
Explanation: The lingual branch of the trigeminal nerve (V3) provides general sensation to
the anterior two-thirds of the tongue.
Question 5
A patient presents with paralysis of the muscles of facial expression on the right side. Which
nerve is affected?
A. Trigeminal nerve
B. Facial nerve
C. Glossopharyngeal nerve
D. Vagus nerve
Correct Answer: B
Explanation: The facial nerve (CN VII) innervates muscles of facial expression; damage causes
ipsilateral facial paralysis known as Bell's palsy.
Question 6
The parotid gland secretes saliva primarily through which duct?
, A. Wharton's duct
B. Bartholin's duct
C. Stensen's duct
D. Rivinus duct
Correct Answer: C
Explanation: Stensen's duct carries parotid saliva to the oral cavity, opening adjacent to the
maxillary second molar.
Question 7
Which bone forms the anterior portion of the hard palate?
A. Maxilla
B. Palatine bone
C. Vomer
D. Sphenoid bone
Correct Answer: A
Explanation: The palatine process of the maxilla forms the anterior two-thirds of the hard
palate, with the palatine bones forming the posterior portion.
Question 8
A patient exhibits limited ability to protrude the tongue. Which muscle is most likely
affected?
