1. Epstein pearls are.
a. same as enamel pearls
b. imperfections in the tooth bud
c. seen in vitamin D deficiency
d. small keratin cysts of the newborn infants
2. A constant feature associated with the radicular cyst is.
a. an impacted tooth
.
b. a missing tooth
c. a nonvital tooth
d. a compound odontome
3. An area of radiolucency about the crown of an unerupted tooth which has obviously completed its development suggests.
a. a median cyst
b. an impaction
c. a dentigerous cyst
d. a primordial cyst
4. The most common cyst in the oral region is.
a. a median cyst
b. a radicular cyst
c. a follicular cyst
d. a nasolabial cyst
5. A patient has a swelling of long standing at the ala of the nose on the left side. Examination reveals a swelling in the floor of the nostril and beneath the upper lip. There is no pain and regional teeth are vital. Radiographs show no bony change the preliminary diagnosis would be.
a. alveolar abscess
b. incisive canal cyst
c. nasolabial cyst
d. dermoid cyst
6. A patient has a 7 x 5 cm soft swelling at the angle of the mandible anterior to the sternomastoid muscle. The patient states that he has been aware of the swelling most of his life & that there has never been any pain associated with the swelling, the regional lymphnodes are non palpable. Blood & urine examinations are with in normal limits. Radiographic surveys of the teeth, jaws & cervical spine are negetive. Aspiration of the swelling reveals a yellow – brown fluid. What condition is most suggestive on the basis of the clinical examination and the laboratory findings.
a. submylohyoid dermoid cyst
b. follicular ameloblastoma
c. thyroglossal duct cyst
d. branchial cleft cyst
7. Radiographs of an asymptomatic 20 year old patient showed a sharply outlined 2 cm radiolicency in the mandibular first molar area which scalloped between the roots of the vital teeth. There findings suggest a.
a. dentigerous cyst
b. radicular cyst
c. compound odontoma
d. simple bone cyst
8. The usual location of a primordial cyst is.
a. third molar area
b. symphysis of the mandible
c. mandibular premolar area
d. apical area of a devitalized tooth.
9. The giant cells of giant cell granuloma, hyper parathyroidism & aneurysmal bone cyst are best described as resembling.
a. Osteoclasts
b. langhans cells
c. tumor giant cells
d. reed - steenberg cells
10. Which of the following cysts is most likely to undergo transformation in to an ameloblastoma?
a. residual cyst
b. radicular cyst
c. dentigerous cyst
d. globulo maxillary cyst
11. Which of the following is usually associated with a lateral periodontal cyst?
a . a vital tooth
b. a non vital tooth
c. a peri apical rarefaction
d. defuse osteitis
12. In a pulp lack of response to vitality tests can be used to differentiate between a.
a. cementoma and a periapical granuloma
b. cementoma and an incisive canal cyst
c. periapical granuloma & condensing osteitis
d. periapical granuloma & periapical cyst
13. Bohn’s nodules or epstein pearls are cysts that arise from.
a. squamous epithelium of the mucosa
b. connective tissue of the mucosa
c. rests of malassez
d. dental lamina
14. Which of the following is characteristic of a primordial cyst.
a. develops in place of a tooth
b. attached to the apex of a tooth
c. attached to the crown of a tooth
d. remains after tooth is extracted
15. Which of the following cysts will most often cause surgical hemorrhaging ?
a. radicular cyst
b. primordial cyst
c. traumatic bone cyst
d. aneurysmal bone cyst
16. Which of the following cysts occurs in extraosseous location.
a. nasolabial
b. nasopalatine
c. median palatal
d. globulo maxillary
17. Which of the following cysts is lined with stratified squamous epithelium or columnar epilhelium & has blood vessels, nerves & mucus glands in the walls.
a. dermoid cyst
b. periapical cyst
c. median mandibular cyst
d. naso palatine duct cyst
18. Which of the following radiographic features is commonly associated with a traumatic bone cyst.
a. divergence of the roots of teeth
b. unilocular radiolucency focal radiopocity
c. domeshaped radiopacity of the maxillary sinus
d. scalloped radiolucency extending between the roots of teeth
19. Which of the following is necessary to differentiate among a dentigerous cyst, OKC & ameloblastoma.
a. aspiration
b. exfoliative cytology
c. radiographic examination
d. microscopic examination
20. Which of the following cysts has the greatest potential for neoplastic transformation ?
a. epidermoid
b. dentigerous
c. traumatic bone
d. lympho epithelial
21. Which of the following cysts is NOT usually associated with a tooth ?
a. radicular
b. primordial
c. periodontal
d. dentigerous
22. Which of the following lesions precedes a periapical cyst.
a. cementoblastoma
b. peri apical granuloma
c. periapical cemental dysplasia (cementoma)
d. none of the above
23. Which of the following is a soft tissue cyst?
a. Nasolabial cyst
b. Nasopalatine cyst
c. Incisive canal cyst
d. Median alveolar cyst.
24. The golbulomaxillary cyst occurs between the
a. Upper cuspid and lateral incisor
b. Upper centeral and laletral incisor
c. Upper centeral incisors
d. None of the above
25. Of the following cysts the one usually not exhibiting radiolucency on x-ray is the
a. Primordial cyst
b. Dentigerous cyst
c. Nasopalatine cyst
d. Naso alveolar cyst