[HAADDN] HAAD DN DOH Licensureination
for Dental Nurse and Dental Assistant
Certification Exam Guide
**Question 1.** Which of the following pieces of information is NOT required when updating a
patient’s medical history for a dental record?
A) Current medications
B) Recent travel history
C) Family history of hypertension
D) Favorite food
Answer: D
Explanation: Medical histories focus on health‑related data; favorite food is not relevant to
dental treatment planning.
**Question 2.** The normal range for an adult resting heart rate recorded by a dental assistant
is:
A) 40‑60 beats per minute
B) 60‑100 beats per minute
C) 100‑120 beats per minute
D) 120‑140 beats per minute
Answer: B
Explanation: A typical adult resting pulse is 60‑100 bpm; values outside this range may indicate
a medical issue.
**Question 3.** In the FDI two‑digit numbering system, which number corresponds to the
maxillary left first molar?
A) 26
,[HAADDN] HAAD DN DOH Licensureination
for Dental Nurse and Dental Assistant
Certification Exam Guide
B) 16
C) 36
D) 46
Answer: A
Explanation: The first digit (2) denotes the maxillary left quadrant; the second digit (6) identifies
the first molar.
**Question 4.** When taking an intra‑oral photograph of the maxillary anterior teeth, which
mirror is most appropriate?
A) Front‑surface (FS) mirror
B) Occlusal mirror
C) Explorer mirror
D) Bite‑wing mirror
Answer: A
Explanation: The front‑surface mirror provides a clear view of the labial surfaces of anterior
teeth.
**Question 5.** The primary purpose of the high‑volume evacuator (HVE) during four‑handed
dentistry is to:
A) Deliver water spray to the operative field
B) Provide suction to control saliva and debris
C) Light cure composite material
D) Retract soft tissue
,[HAADDN] HAAD DN DOH Licensureination
for Dental Nurse and Dental Assistant
Certification Exam Guide
Answer: B
Explanation: HVE removes saliva, blood, and debris, maintaining a dry field for the dentist.
**Question 6.** Which patient positioning is recommended for a mandibular posterior
restoration?
A) Supine with head tilted 30° upward
B) Semi‑reclined with head tilted 20° downward
C) Prone with head elevated 15°
D) Upright with neck hyperextended
Answer: B
Explanation: Semi‑reclined with slight head‑down tilt improves visibility and access to
mandibular posterior teeth.
**Question 7.** During endodontic assistance, the assistant should pass the file to the dentist
using which technique?
A) Hand‑to‑hand transfer with the thumb on the handle
B) Passing the file on a sterile gauze pad
C) Holding the file by the tip and sliding it across the tray
D) Using a magnetic holder
Answer: A
Explanation: The thumb‑on‑handle method provides control and prevents contamination of the
file’s working end.
, [HAADDN] HAAD DN DOH Licensureination
for Dental Nurse and Dental Assistant
Certification Exam Guide
**Question 8.** In orthodontic procedures, the assistant’s role in placing ligatures includes:
A) Cutting the archwire to length
B) Applying the ligature directly onto the bracket using tweezers
C) Mixing the bonding agent for brackets
D) Adjusting the wire tension
Answer: B
Explanation: The assistant uses orthodontic tweezers to place elastic or wire ligatures onto
brackets.
**Question 9.** Which of the following is the correct sequence for rubber‑dam isolation?
A) Frame placement → punch holes → place dam → clamp teeth
B) Clamp teeth → place dam → punch holes → frame placement
C) Punch holes → place dam → clamp teeth → frame placement
D) Frame placement → clamp teeth → punch holes → place dam
Answer: A
Explanation: The dam is first stretched over the frame, then holes are punched, placed over the
teeth, and finally clamps secure the dam.
**Question 10.** Standard precautions require dental assistants to wear which combination of
personal protective equipment (PPE) for routine procedures?
A) Lab coat, goggles, surgical mask, gloves
for Dental Nurse and Dental Assistant
Certification Exam Guide
**Question 1.** Which of the following pieces of information is NOT required when updating a
patient’s medical history for a dental record?
A) Current medications
B) Recent travel history
C) Family history of hypertension
D) Favorite food
Answer: D
Explanation: Medical histories focus on health‑related data; favorite food is not relevant to
dental treatment planning.
**Question 2.** The normal range for an adult resting heart rate recorded by a dental assistant
is:
A) 40‑60 beats per minute
B) 60‑100 beats per minute
C) 100‑120 beats per minute
D) 120‑140 beats per minute
Answer: B
Explanation: A typical adult resting pulse is 60‑100 bpm; values outside this range may indicate
a medical issue.
**Question 3.** In the FDI two‑digit numbering system, which number corresponds to the
maxillary left first molar?
A) 26
,[HAADDN] HAAD DN DOH Licensureination
for Dental Nurse and Dental Assistant
Certification Exam Guide
B) 16
C) 36
D) 46
Answer: A
Explanation: The first digit (2) denotes the maxillary left quadrant; the second digit (6) identifies
the first molar.
**Question 4.** When taking an intra‑oral photograph of the maxillary anterior teeth, which
mirror is most appropriate?
A) Front‑surface (FS) mirror
B) Occlusal mirror
C) Explorer mirror
D) Bite‑wing mirror
Answer: A
Explanation: The front‑surface mirror provides a clear view of the labial surfaces of anterior
teeth.
**Question 5.** The primary purpose of the high‑volume evacuator (HVE) during four‑handed
dentistry is to:
A) Deliver water spray to the operative field
B) Provide suction to control saliva and debris
C) Light cure composite material
D) Retract soft tissue
,[HAADDN] HAAD DN DOH Licensureination
for Dental Nurse and Dental Assistant
Certification Exam Guide
Answer: B
Explanation: HVE removes saliva, blood, and debris, maintaining a dry field for the dentist.
**Question 6.** Which patient positioning is recommended for a mandibular posterior
restoration?
A) Supine with head tilted 30° upward
B) Semi‑reclined with head tilted 20° downward
C) Prone with head elevated 15°
D) Upright with neck hyperextended
Answer: B
Explanation: Semi‑reclined with slight head‑down tilt improves visibility and access to
mandibular posterior teeth.
**Question 7.** During endodontic assistance, the assistant should pass the file to the dentist
using which technique?
A) Hand‑to‑hand transfer with the thumb on the handle
B) Passing the file on a sterile gauze pad
C) Holding the file by the tip and sliding it across the tray
D) Using a magnetic holder
Answer: A
Explanation: The thumb‑on‑handle method provides control and prevents contamination of the
file’s working end.
, [HAADDN] HAAD DN DOH Licensureination
for Dental Nurse and Dental Assistant
Certification Exam Guide
**Question 8.** In orthodontic procedures, the assistant’s role in placing ligatures includes:
A) Cutting the archwire to length
B) Applying the ligature directly onto the bracket using tweezers
C) Mixing the bonding agent for brackets
D) Adjusting the wire tension
Answer: B
Explanation: The assistant uses orthodontic tweezers to place elastic or wire ligatures onto
brackets.
**Question 9.** Which of the following is the correct sequence for rubber‑dam isolation?
A) Frame placement → punch holes → place dam → clamp teeth
B) Clamp teeth → place dam → punch holes → frame placement
C) Punch holes → place dam → clamp teeth → frame placement
D) Frame placement → clamp teeth → punch holes → place dam
Answer: A
Explanation: The dam is first stretched over the frame, then holes are punched, placed over the
teeth, and finally clamps secure the dam.
**Question 10.** Standard precautions require dental assistants to wear which combination of
personal protective equipment (PPE) for routine procedures?
A) Lab coat, goggles, surgical mask, gloves
