Oral Surgery #1 – Unidontia

1. What is the best way to palpate the posterior aspect of the mandibular condyle?

Through the external auditory meatus

Any of the above

Intraorally

Externally over the posterior surface of the condyle with the mouth open

2. Postoperative hypotension is usually due to the effect of:

Transfusion reactions

Orotracheal

Laryngeal mask airway

Submental

3. Osteotomes differ from chisels In that they are

Non bevelled

Sharp

Bi-bevelled

Slightly curved

4. Guerin fracture is

Nasal bone fracture only

Maxillary and zygomatic fracture

Maxillary fracture

Maxillary and nasal bone fracture

5. Most common bacterium responsible for subacute bacterial endocarditis after dental extraction is

Streptococcus salivarius

Streptococcus mitis

Streptococcus mutans

Streptococcus viridians

6. Gate control theory of pain is modulated by:

B fibers

Substantia gelatinosa

C fibers

Transmission system of CNS

7. The dose of epinephrine given in anaphylaxis:

1 mg in 1:100 IM

0.5 mg in 1:10,000 IM

0.5 mg in 1:1000 IM

0.5 mg in 1:500 IM

8. Difference in osteotome and chisel:

Chisel is curved while osteotome is straight

Chisel is Sharper while osteotome is more blunt

Chisel is bi bevelled while osteotome is unibevelled

Osteotome is unibeveled while chisel is Bibevel

9. Lingual split bone techniis used for extraction of:

Impacted mandibular 3rd molar

Impacted maxillary 3rd molar

Impacted maxillary canine

Impacted mandibular canine

10. A Hepatitis B immunized doctor gets a transcutaneous exposure (needle stick injury) from a known Hepatitis B carrier patient. What should be done:

Interferon + Hepatitis B Immune globulin

Hepatitis B vaccine + Lamivudine

Hepatitis B immunoglobulin + vaccine

Hepatitis B vaccine only

11. The commonly available most potent topical anaesthetic

Benzocane

Mepivacane

Prolicane

Tetracane

12. Following a local anesthetic injection, anesthetic effects will disappear and reappear in a definite order. Arrange the following sensations in increasing order of resistance to conduction. 1. Touch, 2. Warm, 3. deep pressure, 4. Pain, 5. Cold, 6. Motor

1,2,5,4,3,6

4,6,2,1,3,5

6,3,5,4,2,1

4,5,2,1,3,6

13. True regarding throat pack in oral surgery:

Given to patients intubated with cuffed oropharyngeal tubes

Given to patients intubated with uncuffed oropharyngeal tubes

Given to all patients intubated with LMA

Given to all intubated patients undergoing oral surgery

14. During an inferior alveolar nerve block injection, the needle passes through the mucous membrane and the buccinator muscle and lies lateral to the:

Medial pterygoid muscle

Lateral pterygoid muscle

Temporalis muscle

Masseter muscle

15. In the extraoral technifor mandibular nerve block the needle after contacting the pterygoid plate is directed

Inferiorly

Anteriorly

Posteriorly

Superiorly

16. Patient with prosthetic cardiac valve needs oral surgical procedure under GA. Antibiotic prophylaxis of choice is

2gm amoxicillin 1hr prior to GA

500 mg before 1hr to GA

1gm amoxicillin 2hr prior to GA

600 MG Clindamycin 15 min before surgery

17. Cocaine is said to be how many times toxic than procaine:

Seven times

Both are equally toxic

Twenty times

Ten times

18. Most resistant structure to diffusion of local anesthetic through nerve membrane is:

Epineurium

Axolemma

Endoneurium

Perineurium

19. Lidocaine is:

One and one-half times as toxic as procaine

Least toxic LA agent

Ten times as toxic as procaine

Least safest inhalation anesthetic

20. Champy’s plate is:

Monocortical compression

Bicortical non-compression

Monocortical non-compression

Bicortical compression

Question 1 of 20