NDAEB
practice exam DA questions and
Answers
Gonadal - ✔✔- Prior to exposing a dental radiograph/image, placement of the
lead apron over the patient protects which one of the following tissues?
Water to powder ratio, mixing time and water temperature. - ✔✔- Which three
factors are essential in order to produce accurate diagnostic casts?
In a tightly closed mercury recycling container - ✔✔- What is the correct way
to store scrap amalgam?
It is drained from the sterilizer and discarded down the drain in the sink. -
✔✔- In a steam sterilizer, the distilled water is converted to steam then
condensed back into liquid water. What happens to the condensed water?
Exposed dentinal tubules - ✔✔- A patient presents to the dental office with
concerns about sensitivity on a lower canine tooth. The dentist performs an
examination and diagnoses gingival recession and abrasion on the facial root
surface of tooth 33. The patient has 100% dental insurance
coverage for diagnostic, preventive and restorative services.
What is the etiology of the sensitivity?
Debridement, careful brushing at home, warm water rinses - ✔✔- A
24-year-old patient presents for an emergency exam.
During the interview it is noted that he is a heavy smoker and has been under
a
great deal of emotional stress. The clinical examination findings are: a biofilm
index of 3 with some ulceration of interdental papillae.
What
is the recommended treatment for this patient?
,Rolling stroke. - ✔✔- A 75-year-old patient presents at the dental office with a
fractured tooth 46. While reviewing the medical history, the dental assistant
notes that the patient has rheumatoid arthritis and type II diabetes. The clinical
examination also reveals generalized gingival recession, cervical tooth
abrasion and several root caries.
Which one of the following tooth brushing techniques should be recommended
for this
patient?
As a matrix for the provisional - ✔✔- A patient presents for a bridge
preparation. The dentist administers the local anesthetic then the dental
assistant takes an alginate impression of the lower left quadrant. Teeth 36 and
37 are missing and tooth 38 has drifted into the 37 position. The bridge will go
from tooth 35 to tooth 38.
The insurance plan provides 80% reimbursement for this type of treatment.
What will the alginate impression be used for?
26 - ✔✔- A patient presents for an emergency examination of tooth 16. The
tooth has been sensitive to pressure for several weeks and the patient
indicates that it is getting worse. The dentist does an intra-oral examination
and prescribes a direct digital periapical radiograph of the area. The dental
assistant is directed to assemble equipment and supplies for pulp vitality
testing.
Which one of the following teeth would be best as the control tooth for the pulp
vitality test?
Irreversible pulpitis. - ✔✔- A patient presents for an emergency examination
of tooth 16. The tooth has been sensitive to pressure for several weeks and
the patient indicates that it is getting worse. The dentist does an intra-oral
examination and prescribes a direct digital periapical radiograph of the area.
The dental assistant is directed to assemble equipment and supplies for pulp
vitality testing.
The cold test for the tooth causes an intense pain that does not resolve for a
few minutes. What diagnosis is most probable?
Arch is punched too flat. - ✔✔- A dental assistant must be able to self-correct
errors made during dental dam punching and placement. From the list of
errors below, choose the one that best matches the scenario given in the item.
, Bunching and stretching on lingual of dam when placed
2. Her bottom two teeth, the central incisors - ✔✔- A mother of a 5-month-old
infant ask the dental assistant which of her daughter's teeth will fall out first.
What is the most accurate response?
1. Her upper two teeth, the frontal incisors
2. Her bottom two teeth, the central incisors
3. Her two canine teeth will fall out first
4. Her primary molars
3. Submandibular glands - ✔✔- Which of the following produces about 60%
of the total amount of saliva?
1. Sublingual gland
2. Parotid gland
3. Submandibular glands
4. None of the options
2. Stylohyoid - ✔✔- Which of the following muscles of the mouth floor raises
the hyoid bone to assist in swallowing?
1. Digastric
2. Stylohyoid
3. Geniohyoid
4. Mylohyoid
4. Hoe - ✔✔- This instrument is used to prepare the tooth and plane the walls
and floors of the tooth preparation with a push-pull action:
1. Spatula
2. Condensers
3. Hatchet
4. Hoe
3. Ultrasonic handpiece - ✔✔- What handpiece would be used for the
removal of bonding materials from a tooth surface after orthodontic appliances
are removed?
1. Air abrasion handpiece
2. Laboratory handpiece
practice exam DA questions and
Answers
Gonadal - ✔✔- Prior to exposing a dental radiograph/image, placement of the
lead apron over the patient protects which one of the following tissues?
Water to powder ratio, mixing time and water temperature. - ✔✔- Which three
factors are essential in order to produce accurate diagnostic casts?
In a tightly closed mercury recycling container - ✔✔- What is the correct way
to store scrap amalgam?
It is drained from the sterilizer and discarded down the drain in the sink. -
✔✔- In a steam sterilizer, the distilled water is converted to steam then
condensed back into liquid water. What happens to the condensed water?
Exposed dentinal tubules - ✔✔- A patient presents to the dental office with
concerns about sensitivity on a lower canine tooth. The dentist performs an
examination and diagnoses gingival recession and abrasion on the facial root
surface of tooth 33. The patient has 100% dental insurance
coverage for diagnostic, preventive and restorative services.
What is the etiology of the sensitivity?
Debridement, careful brushing at home, warm water rinses - ✔✔- A
24-year-old patient presents for an emergency exam.
During the interview it is noted that he is a heavy smoker and has been under
a
great deal of emotional stress. The clinical examination findings are: a biofilm
index of 3 with some ulceration of interdental papillae.
What
is the recommended treatment for this patient?
,Rolling stroke. - ✔✔- A 75-year-old patient presents at the dental office with a
fractured tooth 46. While reviewing the medical history, the dental assistant
notes that the patient has rheumatoid arthritis and type II diabetes. The clinical
examination also reveals generalized gingival recession, cervical tooth
abrasion and several root caries.
Which one of the following tooth brushing techniques should be recommended
for this
patient?
As a matrix for the provisional - ✔✔- A patient presents for a bridge
preparation. The dentist administers the local anesthetic then the dental
assistant takes an alginate impression of the lower left quadrant. Teeth 36 and
37 are missing and tooth 38 has drifted into the 37 position. The bridge will go
from tooth 35 to tooth 38.
The insurance plan provides 80% reimbursement for this type of treatment.
What will the alginate impression be used for?
26 - ✔✔- A patient presents for an emergency examination of tooth 16. The
tooth has been sensitive to pressure for several weeks and the patient
indicates that it is getting worse. The dentist does an intra-oral examination
and prescribes a direct digital periapical radiograph of the area. The dental
assistant is directed to assemble equipment and supplies for pulp vitality
testing.
Which one of the following teeth would be best as the control tooth for the pulp
vitality test?
Irreversible pulpitis. - ✔✔- A patient presents for an emergency examination
of tooth 16. The tooth has been sensitive to pressure for several weeks and
the patient indicates that it is getting worse. The dentist does an intra-oral
examination and prescribes a direct digital periapical radiograph of the area.
The dental assistant is directed to assemble equipment and supplies for pulp
vitality testing.
The cold test for the tooth causes an intense pain that does not resolve for a
few minutes. What diagnosis is most probable?
Arch is punched too flat. - ✔✔- A dental assistant must be able to self-correct
errors made during dental dam punching and placement. From the list of
errors below, choose the one that best matches the scenario given in the item.
, Bunching and stretching on lingual of dam when placed
2. Her bottom two teeth, the central incisors - ✔✔- A mother of a 5-month-old
infant ask the dental assistant which of her daughter's teeth will fall out first.
What is the most accurate response?
1. Her upper two teeth, the frontal incisors
2. Her bottom two teeth, the central incisors
3. Her two canine teeth will fall out first
4. Her primary molars
3. Submandibular glands - ✔✔- Which of the following produces about 60%
of the total amount of saliva?
1. Sublingual gland
2. Parotid gland
3. Submandibular glands
4. None of the options
2. Stylohyoid - ✔✔- Which of the following muscles of the mouth floor raises
the hyoid bone to assist in swallowing?
1. Digastric
2. Stylohyoid
3. Geniohyoid
4. Mylohyoid
4. Hoe - ✔✔- This instrument is used to prepare the tooth and plane the walls
and floors of the tooth preparation with a push-pull action:
1. Spatula
2. Condensers
3. Hatchet
4. Hoe
3. Ultrasonic handpiece - ✔✔- What handpiece would be used for the
removal of bonding materials from a tooth surface after orthodontic appliances
are removed?
1. Air abrasion handpiece
2. Laboratory handpiece
