Exodontia (tooth extraction) and impaction 3 l Oral and maxillofacial surgery MCQs for dental students
1. Extraction of which one of the teeth is the most common cause of oro-antral fistula:
A. Maxillary
canine
B. Maxillary
1st molar
C. Maxillary
2nd molar
D. Maxillary
3rd molar
2. An elderly patient, with H/O myocardial infarction 4 months back, needs extraction of decayed maxillary third molar. Your line of treatment would be:
A. Administer
oral antibiotics for three days and do the extraction
B. Hospitalize
the patient, administer IV antibiotics and do the extraction
C. Do the
extraction and later, prescribe oral antibiotics
D. Put on
antibiotics, refer the patient to the cardiologist and do the extraction at a
later date
3. "Dry-socket" is also called as:
A. Acute
osteomyelitis
B. Acute
alveolar osteitis
C. Osteitis
deformans
D. Chronic
alveolitis
4. Secondary bleeding (hemorrhage) is seen after:
A. 24 hrs
B. 12 hrs
C. 6 hrs
D. 1 week
5. Rotational force of extraction is used for delivery of which tooth out of the socket?
A. Upper
central incisors and lower premolars
B. Upper
centrals and lateral incisors
C. Upper and
lower central incisors
D. Upper
premolars and lower central incisors
6. During/after extraction of an impacted lower 3rd molar, for an young patient, the patient develops a swelling on the same side, which is soft, severely tender and crackles on palpation. The diagnosis would be:
A. Ludwig's
angina
B. Haematoma
C. Surgical
emphysema
D. Surgical
edema
7. For patients with hypothyroidism, on medications, extraction of decayed teeth is:
A. A relative
contraindication
B. An absolute
contraindication
C. Indicated,
with maximum precautions
D. Treated as
normal extraction
8. A6-year-old child needs lower deciduous 2nd molar extraction. The type of anesthesia given is:
A. Infiltration
B. Nerve block
C. Periodontal
injection
D. General
anesthesia
9. The straight elevator works on which principle:
A. Wedge
principle
B. Wheel and
axle principle
C. Lever and
fulcrum
D. Apical force
10. After administration of the inferior alveolar nerve block, patient develops difficulty in opening the mouth. This may be due to:
A. Injury to
medial pterygoid muscle
B. Injury to
lingual nerve
C. Injury to
buccinator muscle
D. Injury to
lateral pterygoid muscle
11. The pathogenesis of dry socket was put by:
A. Kelly
B. Bell's
C. Birn
D. Hilton
12. The most common complication occurring in a child after inferior alveolar nerve block:
A. Angular
cheilitis
B. Lip
ulceration
C. Necrosis of
the lip
D. Paresthesia
13. Forces of extraction for lower premolars are:
A. Apical,
buccolingual and buccal
B. Apical and
buccal
C. Buccal and
lingual and apical
D. Apical and
rotation
14. While giving posterior superior alveolar nerve block, the patient develops a huge swelling and almost immediately on the respective side of the face the cause may be:
A. Patient is
allergic to local anesthetic solution
B. Local anesthetic
solution entering into lateral pterygoid space
C. Patient is
going for hypovolemic shock
D. Rupture of
pterygoid plexus of veins, during needle insertion
15. For extracting maxillary 1st molar, the nerves anaesthetized are:
A. Posterior
superior alveolar nerve, middle superior alveolar nerve and greater palatine
nerve
B. Posterior
superior alveolar nerve, middle superior alveolar nerve and nasopalatine nerve
C. Posterior
superior alveolar nerve and greater palatine nerve
D. Posterior
superior alveolar nerve and nasopalatine nerve
16. The common organism implicated in dry socket:
A. Streptococcus
B.
Staphylococcus
C. Treponema
denticola
D. Pneumococcus
17. A tooth displaced into the maxillary antrum can be removed by:
A. Caldwell-Luc
procedure
B.
Transalveolar extraction
C. Berger's
method
D. Intranasal antrostomy
18. The best treatment for pericoronitis involving a partially impacted 3rd molar is:
A. Removing the
3rd molar
B. Irrigating
under the operculum
C Antibiotic
therapy
D.
Operculectomy
19. The optimal time for a surgical procedure in an irradiated field is:
A. Six months
to one year after completion of radiotherapy
B. Four to six
weeks after radiotherapy
C. Immediately
after completion of radiotherapy
D. Any time
during course of radiotherapy
20. Healing of extraction wounds takes place in:
A. 3 stages
B. 2 stages
C. 4 stages
D. 5 stages
21. The current concept in treatment of extraction socket:
A. Non
compression
B. Use of
compression
C. Use of bone
graft
D. Removal of
inter-radicular bone
22. The most common tooth to be impacted in oral cavity:
A. Maxillary
canine
B. Maxillary
1st molar
C. Mandibular
3rd molar
D. Mandibular
canine
23. The most accepted theory for "dry-socket" is:
A. Alpha
receptor theory
B. Birn's
hypothesis
C. Pattern
theory
D. Tissue
breakdown
24. Trans-alveolar extraction refers to:
A. Open method
of extraction
B. Closed
method of extraction
C. Combination
of both
D. Forceps
extraction only
25. The phylogenic theory refers to the explanation for:
A. Impacted
tooth
B. Cystic
lesion
C. Squamous
cell carcinoma
D. White
lesions
26. The most
common graft material used nowadays in extraction socket:
A.
Hydroxyapatite
B. Calcium
sulfate
C. Calcium
carbonate
D. Calcium
chloride
27. Surgical used as hemostatic agent for post extraction bleeding is:
A. Commercially
available thrombin
B. Russell's
viper venom
C. Oxidized
cellulose
D. Methyl
cellulose
28. During extraction of mandibular 3rd molar, the tooth may escape into:
A. Sublingual
space
B. Pterygoid
space
C.
Sub-mandibular space
D. Buccal space
29. Post-CVA (cerebrovascular accidents) patients shouldn't undergo elective dental care for a period of at least:
A. 2 months
B. 3 months
C. 6 months
D. 12 months
30. Octyl cyanoacrylate is used as a in oral surgery:
A. Suture
material
B. Tissue
adhesive
C. Hemostyptic
D. Binding
agent
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