Dental Anesthesia 4DD SEM1 Test| QUESTIONS
AND CORRECT ANSWERS | LATEST VERSION
2025/2026
1. Surface activity and low toxic potential?
- Cocaine
- Benzocaine
- Bupivacaine
- procaine
- Lidocaine - SOLUTION -✓ Benzocaine
2. Which of the following drugs can cause methemoglonemia?
- Cocaine
- Lidocaine
- Bupivacaine
- Procaine
- Prilocaine - SOLUTION -✓ Prilocaine
3. Vasoconstrictor in Local anesthetic solution is?
- Reduce toxic effects of LA solution
- Decreases depth & duration of LA
- Increase bleeding
- Increase toxic effects of LA
- Has no effect on efficacy LA solution - SOLUTION -✓ Reduce toxic effects of LA solution
4. When injecting Local solutionin maxilla on buccal side. The technique is ?
- Sup periosteal
- Supra periosteal
- Sup mucosal
- Intra osseous
- Intra septal - SOLUTION -✓ Supra periosteal
5. Disto buccal root of upper first molar is supplied by:?
,- Middle superior alveolar nerve
- Posterior superior alveolar nerve
- Infra orbital nerve
- Mental nerve
- Buccal nerve - SOLUTION -✓ Posterior superior alveolar nerve
6. Technique of anesthesia in which local anesthetic solution is injected into the vein is ?
- Nerve block
- Infiltration anesthesia
- Intra venous regional anesthesia
- Epidural anesthesia
- No such technique exists. - SOLUTION -✓ Intra venous regional anesthesia
7. You suspect that your patient has an enlarged submandibular salivary gland. You expect the
enlarged gland?
- to be palpable intraorally
- to be palpable extraorally.
- To be palpable both intra- and extraorally
- only to be detectable by radiographical examination. - SOLUTION -✓ To be palpable both intra- and
extraorally
8. During an inferior alveolar nerve block the needle ideally passes?
- Posterior and medial to medial pterygoid.
- anterior and lateral to medial pterygoid
- through medial pterygoid
- Inferior to medial pterygoid. - SOLUTION -✓ anterior and lateral to medial pterygoid
9. You notice that your patient's submandibular lymph nodes are enlarged. You would look for
potential infection sites in the?
- Hard palate.
- Hard palate and upper lip.
- Hard palate, upper lip and upper central incisor.
- hard palate, upper lip, upper central incisor and lower first molar - SOLUTION -✓ hard palate, upper
lip, upper central incisor and lower first molar
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?
,- The incisive nerve
- The incisive nerve
- The buccal nerve
- The lingual nerve - SOLUTION -✓ The incisive nerve
11. The regional lymphatic drainage of the left side of the tip of the tongue is to the?
- left submental lymph node.
- left and right submental lymph nodes
- left submandibular lymph node.
- left and right submandibular lymph nodes. - SOLUTION -✓ left and right submental lymph nodes
12. A successful inferior alveolar nerve block will produce anesthesia of the?
- lower lip.
- lower lip and mandibular teeth.
- lower lip, mandibular teeth and labial gingivae of the anterior mandibular teeth
- lower lip, mandibular teeth and labial gingivae of the anterior and buccal gingivae of the posterior
mandibular teeth. - SOLUTION -✓ lower lip, mandibular teeth and labial gingivae of the anterior
mandibular teeth
13. The mucosa of the hard palate is?
- keratinised and has submucosa and minor salivary glands posterolaterally
- non-keratinised and has submucosa and minor salivary glands posteromedially
- keratinised and lacks submucosa and minor salivary glands.
- non-keratinised and lacks submucosa and minor salivary glands. - SOLUTION -✓ keratinised and has
submucosa and minor salivary glands posterolaterally
14. A successful infraorbital nerve block will produce anaesthesia of the?
- maxillary anterior teeth.
- maxillary anterior teeth and their labial gingivae.
- maxillary anterior teeth, their labial gingivae and the upper lip
- maxillary anterior teeth, their labial gingivae, the upper lip and anterior hard palate - SOLUTION -✓
maxillary anterior teeth, their labial gingivae and the upper lip
15. In a patient with a normal healthy mouth, you would expect the mucosa covering the alveolar
process supporting the mandibular teeth to be?
- light pink in colour on both sides of the mucogingigival junction.
- light pink below the mucogingival junction and red above it.
, - ed below the mucogingival junction and light pink above it
- red on both sides of the mucogingival junction - SOLUTION -✓ ed below the mucogingival junction
and light pink above it
16. Advantage(s) of 5% lidocaine (Xylocaine)-prilocaine (Citanest) cream (eutectic mixture) is?
- no local irritation
- even absorption
- no systemic toxicity
- higher melting point of combined drug than either lidocaine (Xylocaine) or prilocaine (Citanest)
alone
- no local irritation, even absorption and no systemic toxicity - SOLUTION -✓ no local irritation, even
absorption and no systemic toxicity
17. Local anesthetic used in greater than 50% of rhinolaryngologic cases:?
- prilocaine (Citanest)
- cocaine
- mepivacaine (Carbocaine)
- bupivacaine (Marcaine)
- tetracaine (pontocaine) - SOLUTION -✓ cocaine
18. Mechanism(s) of local anesthetic action in epidural anesthesia:?
- direct local anesthetic action on nerve roots and spinal cord following local anesthetic diffusion
across the dura
- diffusion of local anesthetic into paravertebral regions through the intervertebral foramina
- 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
- neither - SOLUTION -✓ 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
19. Rationale for adding epinephrine to a local anesthetic solution:?
- reduced local anesthetic systemic absorption
- increased anesthetic concentration near nerve fibers
- reduced duration of conduction blockade
- all of the above
AND CORRECT ANSWERS | LATEST VERSION
2025/2026
1. Surface activity and low toxic potential?
- Cocaine
- Benzocaine
- Bupivacaine
- procaine
- Lidocaine - SOLUTION -✓ Benzocaine
2. Which of the following drugs can cause methemoglonemia?
- Cocaine
- Lidocaine
- Bupivacaine
- Procaine
- Prilocaine - SOLUTION -✓ Prilocaine
3. Vasoconstrictor in Local anesthetic solution is?
- Reduce toxic effects of LA solution
- Decreases depth & duration of LA
- Increase bleeding
- Increase toxic effects of LA
- Has no effect on efficacy LA solution - SOLUTION -✓ Reduce toxic effects of LA solution
4. When injecting Local solutionin maxilla on buccal side. The technique is ?
- Sup periosteal
- Supra periosteal
- Sup mucosal
- Intra osseous
- Intra septal - SOLUTION -✓ Supra periosteal
5. Disto buccal root of upper first molar is supplied by:?
,- Middle superior alveolar nerve
- Posterior superior alveolar nerve
- Infra orbital nerve
- Mental nerve
- Buccal nerve - SOLUTION -✓ Posterior superior alveolar nerve
6. Technique of anesthesia in which local anesthetic solution is injected into the vein is ?
- Nerve block
- Infiltration anesthesia
- Intra venous regional anesthesia
- Epidural anesthesia
- No such technique exists. - SOLUTION -✓ Intra venous regional anesthesia
7. You suspect that your patient has an enlarged submandibular salivary gland. You expect the
enlarged gland?
- to be palpable intraorally
- to be palpable extraorally.
- To be palpable both intra- and extraorally
- only to be detectable by radiographical examination. - SOLUTION -✓ To be palpable both intra- and
extraorally
8. During an inferior alveolar nerve block the needle ideally passes?
- Posterior and medial to medial pterygoid.
- anterior and lateral to medial pterygoid
- through medial pterygoid
- Inferior to medial pterygoid. - SOLUTION -✓ anterior and lateral to medial pterygoid
9. You notice that your patient's submandibular lymph nodes are enlarged. You would look for
potential infection sites in the?
- Hard palate.
- Hard palate and upper lip.
- Hard palate, upper lip and upper central incisor.
- hard palate, upper lip, upper central incisor and lower first molar - SOLUTION -✓ hard palate, upper
lip, upper central incisor and lower first molar
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?
,- The incisive nerve
- The incisive nerve
- The buccal nerve
- The lingual nerve - SOLUTION -✓ The incisive nerve
11. The regional lymphatic drainage of the left side of the tip of the tongue is to the?
- left submental lymph node.
- left and right submental lymph nodes
- left submandibular lymph node.
- left and right submandibular lymph nodes. - SOLUTION -✓ left and right submental lymph nodes
12. A successful inferior alveolar nerve block will produce anesthesia of the?
- lower lip.
- lower lip and mandibular teeth.
- lower lip, mandibular teeth and labial gingivae of the anterior mandibular teeth
- lower lip, mandibular teeth and labial gingivae of the anterior and buccal gingivae of the posterior
mandibular teeth. - SOLUTION -✓ lower lip, mandibular teeth and labial gingivae of the anterior
mandibular teeth
13. The mucosa of the hard palate is?
- keratinised and has submucosa and minor salivary glands posterolaterally
- non-keratinised and has submucosa and minor salivary glands posteromedially
- keratinised and lacks submucosa and minor salivary glands.
- non-keratinised and lacks submucosa and minor salivary glands. - SOLUTION -✓ keratinised and has
submucosa and minor salivary glands posterolaterally
14. A successful infraorbital nerve block will produce anaesthesia of the?
- maxillary anterior teeth.
- maxillary anterior teeth and their labial gingivae.
- maxillary anterior teeth, their labial gingivae and the upper lip
- maxillary anterior teeth, their labial gingivae, the upper lip and anterior hard palate - SOLUTION -✓
maxillary anterior teeth, their labial gingivae and the upper lip
15. In a patient with a normal healthy mouth, you would expect the mucosa covering the alveolar
process supporting the mandibular teeth to be?
- light pink in colour on both sides of the mucogingigival junction.
- light pink below the mucogingival junction and red above it.
, - ed below the mucogingival junction and light pink above it
- red on both sides of the mucogingival junction - SOLUTION -✓ ed below the mucogingival junction
and light pink above it
16. Advantage(s) of 5% lidocaine (Xylocaine)-prilocaine (Citanest) cream (eutectic mixture) is?
- no local irritation
- even absorption
- no systemic toxicity
- higher melting point of combined drug than either lidocaine (Xylocaine) or prilocaine (Citanest)
alone
- no local irritation, even absorption and no systemic toxicity - SOLUTION -✓ no local irritation, even
absorption and no systemic toxicity
17. Local anesthetic used in greater than 50% of rhinolaryngologic cases:?
- prilocaine (Citanest)
- cocaine
- mepivacaine (Carbocaine)
- bupivacaine (Marcaine)
- tetracaine (pontocaine) - SOLUTION -✓ cocaine
18. Mechanism(s) of local anesthetic action in epidural anesthesia:?
- direct local anesthetic action on nerve roots and spinal cord following local anesthetic diffusion
across the dura
- diffusion of local anesthetic into paravertebral regions through the intervertebral foramina
- 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
- neither - SOLUTION -✓ 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
19. Rationale for adding epinephrine to a local anesthetic solution:?
- reduced local anesthetic systemic absorption
- increased anesthetic concentration near nerve fibers
- reduced duration of conduction blockade
- all of the above
