NURS DENT 90079 EXAM QUESTIONS WITH
ANSWERS 2022
1001. The roots of primary molars in the absence of their permanent successors:
1. sometimes are partially resorbed and become ankylosed.
2. may remain for years with no significant resorption.
3. may remain for years partially resorbed.
4. are always resorbed.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
Answer: A.
1002. A disease of childhood characterized by mental retardation, delayed growth and delayed
tooth eruption may be caused by deficient:
A. thyroid hormone.
B. testicular hormone.
C. posterior pituitary hormone.
D. anterior pituitary growth
hormone. Answer: A.
1003. A patient is not able to close her left eye, wrinkle her forehead or smile on the left side. The
most likely diagnosis is:
A. contralateral subarachnoid hemorrhage.
B. fracture of the base of the skull.
C. Horner's syndrome.
D. acute mastoiditis.
E. facial nerve paralysis (Bell's
palsy). Answer: E.
1004. Bacterial infection may be confirmed by:
1. white blood cell count.
2. hemoglobin level.
3. erythrocyte sedimentation rate.
4. platelet count.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
Answer: B.
1005. Gigantism is caused by:
A. a hyperactive thyroid.
B. atrophy of the posterior pituitary.
C. hyperplasia of the anterior pituitary.
D. hyperplasia of the parathyroids.
E. None of the above.
Answer: C.
1
,NURS DENT 90079 EXAM QUESTIONS WITH
ANSWERS 2022
1006. Alveolar bone is undergoing remodeling:
A. through the primary dentition.
B. until the end of mixed dentition.
C. until the complete eruption of permanent teeth.
E. throughout life.
Answer: E.
1007. In children, the most common cause of a fistula is:
A. an acute periapical abscess.
B. a chronic periapical abscess.
C. an acute periodontal abscess.
D. a dentigerous cyst.
Answer: B.
Or suppurative periradicular periodontitis
1008. A 3-year old requires the extraction of a maxillary deciduous second molar. The local
anaesthetic technique of choice is:
A. a posterior superior alveolar block.
B. buccal and palatal infiltration.
C. a tuberosity block plus subperiosteal infiltration of the mesio-buccal root.
D. an infra-orbital block.
Answer: B.
1009. The causative organism in most acute alveolar infections is
A. staphylococcus.
B. lactobacillus.
C. streptococcus.
D. candida albicans.
E. actinomyces.
Answer: C.
For osteomyelitis it is Staph. Aureus.
1010. The mechanism of adjustment to maintain the shape and proportions of bone throughout its
growth period is called:
A. remodeling.
B. cortical drift.
C. area relocation.
D. translatory growth.
Answer: A.
1011. Which of the following foods is the most cariogenic?
A. Cheese.
B. Dark chocolate.
C. Jam.
D. Toffee.
Answer: D.
1012. Epidemiology of disease is best described as the:
A. data obtained from sickness surveys.
B. usual low level of disease normally found within a population.
C. control of disease.
2
,NURS DENT 90079 EXAM QUESTIONS WITH
ANSWERS 2022
D. study of disease patterns in a population.
Answer: D.
3
, NURS DENT 90079 EXAM QUESTIONS WITH
ANSWERS 2022
1013. With the development of gingivitis, the sulcus becomes predominantly populated by:
A. gram-positive organisms.
B. gram-negative organisms.
C. diplococcal organisms.
D. spirochetes.
Answer: B.
1014. A characteristic of the periodontium which allows safe temporary separation of the teeth is
the:
A. nature of acellular cementum.
B. elasticity of bone.
C. modified continuous eruption of the teeth.
D. passive eruption.
Answer: B.
1015. Deposition of plaque on teeth occurs in
A. less than 24 hours.
B. 24 to 48 hours.
C. 2 to 4 days.
D. 5 to 7 days.
Answer: A.
1016. Chronic periodontitis is characterized as:
A. inflammatory.
B. irreparable.
C. atrophic.
D. hyperplastic.
E. none of the above.
Answer: A.
1017. How would you diagnose a periapical abscess:
A. Pain on percussion
B. Pain when eating hot food
C. Pain when eating cold food
D. The thickness of periodontal ligament on X-Ray
Answer: A or D.
This question is quite tricky. If the apical abcess is Acute Apical Abscess is an inflammatory reaction
to pulpal infection and necrosis characterized by rapid onset, spontaneous pain, extreme tenderness of
the tooth to pressure, pus formation and swelling of associated tissues. There may be no radiographic
signs of destruction and the patient often experiences malaise, fever and lymphadenopathy. But in
case of Chronic Apical Abscess is an inflammatory reaction to pulpal infection and
necrosis characterized by gradual onset, little or no discomfort and an intermittent discharge of pus
through an associated sinus tract. Radiographically, there are typically signs of osseous destruction
such as a radiolucency.
Option A: pain on percussion can also be related to apical periodontitis, whether acute
or chronic (apical granuloma).
1018. Maximum shrinkage after gingival curettage can be expected from tissue that is
A. fibroedematous.
B. edematous.
4
ANSWERS 2022
1001. The roots of primary molars in the absence of their permanent successors:
1. sometimes are partially resorbed and become ankylosed.
2. may remain for years with no significant resorption.
3. may remain for years partially resorbed.
4. are always resorbed.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
Answer: A.
1002. A disease of childhood characterized by mental retardation, delayed growth and delayed
tooth eruption may be caused by deficient:
A. thyroid hormone.
B. testicular hormone.
C. posterior pituitary hormone.
D. anterior pituitary growth
hormone. Answer: A.
1003. A patient is not able to close her left eye, wrinkle her forehead or smile on the left side. The
most likely diagnosis is:
A. contralateral subarachnoid hemorrhage.
B. fracture of the base of the skull.
C. Horner's syndrome.
D. acute mastoiditis.
E. facial nerve paralysis (Bell's
palsy). Answer: E.
1004. Bacterial infection may be confirmed by:
1. white blood cell count.
2. hemoglobin level.
3. erythrocyte sedimentation rate.
4. platelet count.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
Answer: B.
1005. Gigantism is caused by:
A. a hyperactive thyroid.
B. atrophy of the posterior pituitary.
C. hyperplasia of the anterior pituitary.
D. hyperplasia of the parathyroids.
E. None of the above.
Answer: C.
1
,NURS DENT 90079 EXAM QUESTIONS WITH
ANSWERS 2022
1006. Alveolar bone is undergoing remodeling:
A. through the primary dentition.
B. until the end of mixed dentition.
C. until the complete eruption of permanent teeth.
E. throughout life.
Answer: E.
1007. In children, the most common cause of a fistula is:
A. an acute periapical abscess.
B. a chronic periapical abscess.
C. an acute periodontal abscess.
D. a dentigerous cyst.
Answer: B.
Or suppurative periradicular periodontitis
1008. A 3-year old requires the extraction of a maxillary deciduous second molar. The local
anaesthetic technique of choice is:
A. a posterior superior alveolar block.
B. buccal and palatal infiltration.
C. a tuberosity block plus subperiosteal infiltration of the mesio-buccal root.
D. an infra-orbital block.
Answer: B.
1009. The causative organism in most acute alveolar infections is
A. staphylococcus.
B. lactobacillus.
C. streptococcus.
D. candida albicans.
E. actinomyces.
Answer: C.
For osteomyelitis it is Staph. Aureus.
1010. The mechanism of adjustment to maintain the shape and proportions of bone throughout its
growth period is called:
A. remodeling.
B. cortical drift.
C. area relocation.
D. translatory growth.
Answer: A.
1011. Which of the following foods is the most cariogenic?
A. Cheese.
B. Dark chocolate.
C. Jam.
D. Toffee.
Answer: D.
1012. Epidemiology of disease is best described as the:
A. data obtained from sickness surveys.
B. usual low level of disease normally found within a population.
C. control of disease.
2
,NURS DENT 90079 EXAM QUESTIONS WITH
ANSWERS 2022
D. study of disease patterns in a population.
Answer: D.
3
, NURS DENT 90079 EXAM QUESTIONS WITH
ANSWERS 2022
1013. With the development of gingivitis, the sulcus becomes predominantly populated by:
A. gram-positive organisms.
B. gram-negative organisms.
C. diplococcal organisms.
D. spirochetes.
Answer: B.
1014. A characteristic of the periodontium which allows safe temporary separation of the teeth is
the:
A. nature of acellular cementum.
B. elasticity of bone.
C. modified continuous eruption of the teeth.
D. passive eruption.
Answer: B.
1015. Deposition of plaque on teeth occurs in
A. less than 24 hours.
B. 24 to 48 hours.
C. 2 to 4 days.
D. 5 to 7 days.
Answer: A.
1016. Chronic periodontitis is characterized as:
A. inflammatory.
B. irreparable.
C. atrophic.
D. hyperplastic.
E. none of the above.
Answer: A.
1017. How would you diagnose a periapical abscess:
A. Pain on percussion
B. Pain when eating hot food
C. Pain when eating cold food
D. The thickness of periodontal ligament on X-Ray
Answer: A or D.
This question is quite tricky. If the apical abcess is Acute Apical Abscess is an inflammatory reaction
to pulpal infection and necrosis characterized by rapid onset, spontaneous pain, extreme tenderness of
the tooth to pressure, pus formation and swelling of associated tissues. There may be no radiographic
signs of destruction and the patient often experiences malaise, fever and lymphadenopathy. But in
case of Chronic Apical Abscess is an inflammatory reaction to pulpal infection and
necrosis characterized by gradual onset, little or no discomfort and an intermittent discharge of pus
through an associated sinus tract. Radiographically, there are typically signs of osseous destruction
such as a radiolucency.
Option A: pain on percussion can also be related to apical periodontitis, whether acute
or chronic (apical granuloma).
1018. Maximum shrinkage after gingival curettage can be expected from tissue that is
A. fibroedematous.
B. edematous.
4
