Dental Anesthesia MCQs 200 4dd. Dr.Tong Leang

200 Questions | Total Attempts: 27

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Dental Anesthesia MCQs 200 4dd. Dr.Tong Leang

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Questions and Answers
  • 1. 
    Surface activity and low toxic potential?
    • A. 

      Benzocaine

    • B. 

      Cocaine

    • C. 

      Bupivacaine

    • D. 

      Procaine

    • E. 

      Lidocaine

  • 2. 
    Which of the following drugs can cause methemoglonemia?
    • A. 

      Prilocaine

    • B. 

      Cocaine

    • C. 

      Lidocaine

    • D. 

      Bupivacaine

    • E. 

      Procaine

  • 3. 
    Vasoconstrictor in Local anesthetic solution is?
    • A. 

      Reduce toxic effects of LA solution

    • B. 

      Decreases depth & duration of LA

    • C. 

      Increase bleeding

    • D. 

      Increase toxic effects of LA

    • E. 

      Has no effect on efficacy LA solution

  • 4. 
    When injecting Local solutionin maxilla on buccal side. The technique is ?
    • A. 

      Supra periosteal

    • B. 

      Sup periosteal

    • C. 

      Sup mucosal

    • D. 

      Intra osseous

    • E. 

      Intra septal

  • 5. 
    Disto buccal root of upper first molar is supplied by:?
    • A. 

      Posterior superior alveolar nerve

    • B. 

      Middle superior alveolar nerve

    • C. 

      Infra orbital nerve

    • D. 

      Mental nerve

    • E. 

      Buccal nerve

  • 6. 
    Technique of anesthesia in which local anesthetic solution is injected into the vein is ?
    • A. 

      Intra venous regional anesthesia

    • B. 

      Nerve block

    • C. 

      Infiltration anesthesia

    • D. 

      Epidural anesthesia

    • E. 

      No such technique exists.

  • 7. 
    You suspect that your patient has an enlarged submandibular salivary gland. You expect the enlarged gland?
    • A. 

      To be palpable both intra- and extraorally

    • B. 

      To be palpable intraorally

    • C. 

      To be palpable extraorally.

    • D. 

      Only to be detectable by radiographical examination.

  • 8. 
    During an inferior alveolar nerve block the needle ideally passes?
    • A. 

      Anterior and lateral to medial pterygoid

    • B. 

      Posterior and medial to medial pterygoid.

    • C. 

      Through medial pterygoid

    • D. 

      Inferior to medial pterygoid.

  • 9. 
    You notice that your patient's submandibular lymph nodes are enlarged. You would look for potential infection sites in the?
    • A. 

      Hard palate, upper lip, upper central incisor and lower first molar

    • B. 

      Hard palate.

    • C. 

      Hard palate and upper lip.

    • D. 

      Hard palate, upper lip and upper central incisor.

  • 10. 
    You notice a lesion on the labial alveolar mucosa of the lower right lateral incisor tooth of one of your patients and decide to take a biopsy to send for oral pathology report Which nerve would require local anesthesia in order to carry out a pain-free biopsy?
    • A. 

      The incisive nerve

    • B. 

      The buccal nerve

    • C. 

      The lingual nerve

  • 11. 
    The regional lymphatic drainage of the left side of the tip of the tongue is to the?
    • A. 

      Left and right submental lymph nodes

    • B. 

      Left submental lymph node.

    • C. 

      Left submandibular lymph node.

    • D. 

      Left and right submandibular lymph nodes.

  • 12. 
    A successful inferior alveolar nerve block will produce anesthesia of the?
    • A. 

      Lower lip, mandibular teeth and labial gingivae of the anterior mandibular teeth

    • B. 

      Lower lip.

    • C. 

      Lower lip and mandibular teeth.

    • D. 

      Lower lip, mandibular teeth and labial gingivae of the anterior and buccal gingivae of the posterior mandibular teeth.

  • 13. 
    The mucosa of the hard palate is?
    • A. 

      Keratinised and has submucosa and minor salivary glands posterolaterally

    • B. 

      Non-keratinised and has submucosa and minor salivary glands posteromedially

    • C. 

      Keratinised and lacks submucosa and minor salivary glands.

    • D. 

      Non-keratinised and lacks submucosa and minor salivary glands.

  • 14. 
    A successful infraorbital nerve block will produce anaesthesia of the?
    • A. 

      Maxillary anterior teeth, their labial gingivae and the upper lip

    • B. 

      Maxillary anterior teeth.

    • C. 

      Maxillary anterior teeth and their labial gingivae.

    • D. 

      Maxillary anterior teeth, their labial gingivae, the upper lip and anterior hard palate

  • 15. 
    In a patient with a normal healthy mouth, you would expect the mucosa covering the alveolar process supporting the mandibular teeth to be?
    • A. 

      Ed below the mucogingival junction and light pink above it

    • B. 

      Light pink in colour on both sides of the mucogingigival junction.

    • C. 

      Light pink below the mucogingival junction and red above it.

    • D. 

      Red on both sides of the mucogingival junction

  • 16. 
    Advantage(s) of 5% lidocaine (Xylocaine
    • A. 

      No local irritation, even absorption and no systemic toxicity

    • B. 

      Prilocaine (Citanest) cream (eutectic mixture) is?

    • C. 

      No local irritation

    • D. 

      Even absorption

    • E. 

      No systemic toxicity

  • 17. 
    Local anesthetic used in greater than 50% of rhinolaryngologic cases:?
    • A. 

      Cocaine

    • B. 

      Prilocaine (Citanest)

    • C. 

      Mepivacaine (Carbocaine)

    • D. 

      Bupivacaine (Marcaine)

    • E. 

      Tetracaine (pontocaine)

  • 18. 
    Mechanism(s) of local anesthetic action in epidural anesthesia:?
    • A. 

      Direct local anesthetic action on nerve roots and spinal cord following local anesthetic diffusion across the dura and diffusion of local anesthetic into paravertebral regions through the intervertebral foramina

    • B. 

      Direct local anesthetic action on nerve roots and spinal cord following local anesthetic diffusion across the dura

    • C. 

      Diffusion of local anesthetic into paravertebral regions through the intervertebral foramina

    • D. 

      Neither

  • 19. 
    Rationale for adding epinephrine to a local anesthetic solution:?
    • A. 

      Reduced local anesthetic systemic absorption and increased anesthetic concentration near nerve fibers

    • B. 

      Reduced local anesthetic systemic absorption

    • C. 

      Increased anesthetic concentration near nerve fibers

    • D. 

      Reduced duration of conduction blockade

    • E. 

      All of the above

  • 20. 
    Zone of differential motor blockade may average up to four segments below the sensory level?
    • A. 

      Epidural

    • B. 

      Spinal

    • C. 

      Epidural and Spinal

  • 21. 
    Duration of sensory anesthesia is likely to be extended for abdominal regional anesthesia?
    • A. 

      False

    • B. 

      True

    • C. 

      .

    • D. 

      .

  • 22. 
    Primary side effect/toxicities associated with local anesthetic use:?
    • A. 

      Allergic reactions and systemic toxicity

    • B. 

      Allergic reactions

    • C. 

      Systemic toxicity

    • D. 

      Neither

  • 23. 
    Factors enhancing bupivacaine (Marcaine) toxicity?
    • A. 

      Pregnancy, presence of calcium channel blockers, arterial hypoxemia, acidosis and hypercarbia

    • B. 

      Pregnancy

    • C. 

      Presence of calcium channel blockers

    • D. 

      Arterial hypoxemia

    • E. 

      Acidosis and hypercarbia

  • 24. 
    Agents added to local anesthetics that prolonged local anesthetic duration of action?
    • A. 

      Epinephrine, phenylephrine (Neo-Synephrine) and dextran

    • B. 

      Epinephrine

    • C. 

      Phenylephrine (Neo-Synephrine)

    • D. 

      Dextran

  • 25. 
    Typically a zone of differential sympathetic nervous system blockade?
    • A. 

      Spinal

    • B. 

      Epidural

    • C. 

      Epidural and spinal

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