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NDEAB Exam DA: Questions & Detailed Answers (A+)
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NDEAB Exam DA: Questions & Detailed Answers (A+)
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NDEAB Exam DA: Questions & Detailed Answers (A+)Prior to exposing a dental radiograph/image, placement of the lead apron
over the patient protects which one of the following tissues? Right Ans -
Gonadal
Which three factors are essential in order to produce accurate diagnostic
casts? Right Ans - Water to powder ratio, mixing time and water
temperature.
What is the correct way to store scrap amalgam? Right Ans - In a tightly
closed mercury recycling container
In a steam sterilizer, the distilled water is converted to steam then condensed
back into liquid water. What happens to the condensed water? Right Ans -
It is drained from the sterilizer and discarded down the drain in the sink.
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? Right Ans - Exposed dentinal tubules
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? Right Ans -
Debridement, careful brushing at home, warm water rinses
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? Right Ans - Rolling stroke.
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? Right Ans - As a matrix for
the provisional
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? Right Ans - 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.
The cold test for the tooth causes an intense pain that does not resolve for a
few minutes. What diagnosis is most probable? Right Ans - Irreversible
pulpitis.
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 Right Ans - Arch is
punched too flat.
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 Right Ans - 2. Her bottom two teeth, the central
incisors
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 Right Ans - 3. Submandibular glands
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 Right Ans - 2. Stylohyoid
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 Right Ans - 4. Hoe
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
3. Ultrasonic handpiece
4. Laser handpiece Right Ans - 3. Ultrasonic handpiece
If a patient's anterior teeth are positioned too far back on the bite-block, these
teeth will appear out of focus on the radiograph. What would be the solution
for this?
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