NBDE Part II - 1993 Exam A UPDATED
ACTUAL Exam Questions and CORRECT
Answers
A patient has the asymptomatic condition seen in the radiograph. The MOST probable diagnosis
is
A. Hypercementosis.
B. Complex odontomas.
C. Sickle cell anemia.
D. Sclerosing osteitis.
E. Periapical cemental dysplasia. - CORRECT ANSWER - E. Periapical cemental
dysplasia.
During which trimester of pregnancy does calcification of teeth begin?
A. First
B. Second
C. Third - CORRECT ANSWER - B. Second
Which of the following principles requires health professionals to inform their patients about
treatment and to protect their confidentiality?
A. Justice
B. Autonomy
C. Beneficence
D. Nonmaleficence - CORRECT ANSWER - B. Autonomy
,Each of the following can occur as a result of a successful root canal treatment EXCEPT one.
Which one is this EXCEPTION?
A. Apical seal of cementum
B. Regeneration of alveolar bone
C. Regeneration of the periodontal ligament
D. Formation of reparative dentin - CORRECT ANSWER - D. Formation of reparative
dentin
A dentist is preparing Tooth #30 for an occlusal amalgam restoration. Once the ideal outline form
and depth have been established, the dentist notes that caries remains on the facial, pulpal, and
lingual walls of the preparation. The next step in treatment is to
A. Extend the outline form.
B. Remove the caries with a spoon excavator.
C. Remove the caries with a larger round bur. - CORRECT ANSWER - A. Extend the
outline form.
A mandibular radiolucency can be seen in the radiograph. This radiolucency could be diagnosed
as each of the following EXCEPT one. Which one is this EXCEPTION?
A. Odontogenic myxoma
B. Ameloblastoma
C. Traumatic bone cyst
D. Central cell granuloma
E. Odontogenic keratocyst - CORRECT ANSWER - C. Traumatic bone cyst
A needle tract infection following an inferior alveolar block injection would initially involve
which space?
, A. Pterygomandibular
B. Sublingual
C. Submandibular
D. Lateral pharyngeal - CORRECT ANSWER - A. Pterygomandibular
Which of the following characteristics most readily distinguishes amelogenesis imperfecta from
dentinogenesis imperfecta?
A. Radiographic appearance
B. Hereditary background
C. Presence of blue sclera
D. Color of the teeth
E. Associated hair loss - CORRECT ANSWER - A. Radiographic appearance
Which of the following factors is the most critical in the determination of prognosis of a tooth
with periodontal disease?
A. Probing depth
B. Mobility of the tooth
C. Amount of attachment loss
D. Presence of furcation involvement - CORRECT ANSWER - C. Amount of attachment
loss
Which of the following is derived from the unsaturated fatty acids in cell membranes?
A. Histamine
B. Serotonin
C. Prostaglandins
D. Bradykinin
ACTUAL Exam Questions and CORRECT
Answers
A patient has the asymptomatic condition seen in the radiograph. The MOST probable diagnosis
is
A. Hypercementosis.
B. Complex odontomas.
C. Sickle cell anemia.
D. Sclerosing osteitis.
E. Periapical cemental dysplasia. - CORRECT ANSWER - E. Periapical cemental
dysplasia.
During which trimester of pregnancy does calcification of teeth begin?
A. First
B. Second
C. Third - CORRECT ANSWER - B. Second
Which of the following principles requires health professionals to inform their patients about
treatment and to protect their confidentiality?
A. Justice
B. Autonomy
C. Beneficence
D. Nonmaleficence - CORRECT ANSWER - B. Autonomy
,Each of the following can occur as a result of a successful root canal treatment EXCEPT one.
Which one is this EXCEPTION?
A. Apical seal of cementum
B. Regeneration of alveolar bone
C. Regeneration of the periodontal ligament
D. Formation of reparative dentin - CORRECT ANSWER - D. Formation of reparative
dentin
A dentist is preparing Tooth #30 for an occlusal amalgam restoration. Once the ideal outline form
and depth have been established, the dentist notes that caries remains on the facial, pulpal, and
lingual walls of the preparation. The next step in treatment is to
A. Extend the outline form.
B. Remove the caries with a spoon excavator.
C. Remove the caries with a larger round bur. - CORRECT ANSWER - A. Extend the
outline form.
A mandibular radiolucency can be seen in the radiograph. This radiolucency could be diagnosed
as each of the following EXCEPT one. Which one is this EXCEPTION?
A. Odontogenic myxoma
B. Ameloblastoma
C. Traumatic bone cyst
D. Central cell granuloma
E. Odontogenic keratocyst - CORRECT ANSWER - C. Traumatic bone cyst
A needle tract infection following an inferior alveolar block injection would initially involve
which space?
, A. Pterygomandibular
B. Sublingual
C. Submandibular
D. Lateral pharyngeal - CORRECT ANSWER - A. Pterygomandibular
Which of the following characteristics most readily distinguishes amelogenesis imperfecta from
dentinogenesis imperfecta?
A. Radiographic appearance
B. Hereditary background
C. Presence of blue sclera
D. Color of the teeth
E. Associated hair loss - CORRECT ANSWER - A. Radiographic appearance
Which of the following factors is the most critical in the determination of prognosis of a tooth
with periodontal disease?
A. Probing depth
B. Mobility of the tooth
C. Amount of attachment loss
D. Presence of furcation involvement - CORRECT ANSWER - C. Amount of attachment
loss
Which of the following is derived from the unsaturated fatty acids in cell membranes?
A. Histamine
B. Serotonin
C. Prostaglandins
D. Bradykinin
