Mandibular injection technique #WikiDentia

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1. Profound maxillary anesthesia is more difficult to achieve than profound mandibular anesthesia, because the maxillary cortical plate is rather thin.

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a. Both the statement and the reason are correct and related.

b. Both the statement and the reason are correct but not related.

c. The statement is correct, but the reason is not.

d. The statement is not correct, but the reason is correct.

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2. The success rate of mandibular anesthesia is NOT attributed to which factor?

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a. Absence of consistent landmarks.

b. Need for multiple needle insertions.

c. Presence of a thick mandibular cortical plate.

d. Inability to anesthetize the core fibers of the nerve.

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3. Which mandibular nerve block is most likely to succeed?

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a. Buccal.

b. Incisive.

c. Gow-Gates.

d. Inferior alveolar.

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4. The Vazirani-Akinosi nerve block is uniquely helpful in which scenario?

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a. The patient is unable to open her mouth more than a few millimeters.

b. The patient has a history of unsuccessful inferior alveolar nerve blocks.

c. The patient is scheduled for three procedures, all within the same quadrant.

d. The patient’s treatment plan involves the right and left mandibular incisors.

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5. Which supplemental technique is used to rectify partial anesthesia of a lower incisor, following the administration of an otherwise successful inferior alveolar nerve block?

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a. Intraosseous anesthesia.

b. Supraperiosteal injection.

c. Periodontal ligament injection.

d. Contralateral inferior alveolar nerve block.

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6. The inferior alveolar nerve block

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a. is also known as the buccinator nerve block.

b. has the highest incidence of positive aspiration.

c. has a 95% success rate in producing profound anesthesia.

d. is administered with the use of a 25- or 27-gauge short needle.

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7. A right-handed operator sits in which position to administer a left inferior alveolar nerve block (IANB)?

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a. 8 o’clock.

b. 9 o’clock.

c. 10 o’clock.

d. 11 o’clock.

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8. In most patients, the height of the inferior alveolar injection lies

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a. 1–3 mm above the occlusal plane.

b. 3–6 mm above the occlusal plane.

c. 6–10 mm above the occlusal plane.

d. 10–12 mm above the occlusal plane.

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9. How much of the needle is visible during the deposition of the IANB?

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a. One third.

b. One half.

c. Two thirds.

d. Three fourths.

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10. Which amount of anesthetic is deposited at the inferior alveolar nerve?

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a. 1.8 mL.

b. 1.5 mL.

c. 1.2 mL.

d. 1.0 mL.

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11. Facial paralysis may develop in connection with the IANB if

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a. the bone is contacted too forcefully.

b. anesthetic is deposited without bony contact.

c. the needle comes in contact with the bone too soon.

d. anesthetic is deposited too far below the mandibular foramen.

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12. Which complication is extremely common, after the dissipation of the IANB?

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a. Hematoma.

b. Mild trismus.

c. Blepharoptosis.

d. Facial paralysis.

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13. Anesthesia of the buccal nerve is contraindicated for which procedure?

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a. Placing a matrix band around the mandibular third molar.

b. Restoring a carious cavitation in the second mandibular molar.

c. Placing a rubber dam clamp around the second mandibular molar.

d. Scaling subgingival calculus deposits from the first mandibular molar.

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14. The penetration site of the buccal nerve block is

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a. distal and buccal to the last molar.

b. distal and lingual to the last molar.

c. mesial and buccal to the last molar.

d. mesial and lingual to the last molar.

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15. Bone is gently contacted in each injection, EXCEPT one. Which is the EXCEPTION?

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a. Buccal nerve block.

b. Inferior alveolar nerve block.

c. Gow-Gates mandibular nerve block.

d. Vazirani-Akinosi mandibular nerve block.

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16. The bevel of the needle in the buccal nerve block is positioned toward the

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a. bone.

b. cheek.

c. tongue.

d. occlusion.

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17. Which disadvantage is attributed to the Gow-Gates mandibular nerve block?

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a. Low success rate.

b. High incidence of positive aspiration.

c. Hesitancy on the part of the operator to learn the technique.

d. Partial anesthesia related to unanesthetized accessory innervations.

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18. The onset of anesthesia, following a Gow-Gates mandibular block, is anticipated within

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a. 2 minutes.

b. 3 minutes.

c. 4 minutes.

d. 5 minutes.

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19. Which needle is recommended for a Vazirani-Akinosi mandibular nerve block?

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a. 25-gauge short.

b. 27-gauge short.

c. 25-gauge long.

d. 27-gauge long.

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20. Which intraoral landmark guides the Gow-Gates mandibular block?

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a. Coronoid notch.

b. Most posterior mandibular molar.

c. Mesiolingual cusp of the maxillary second molar.

d. Mucogingival junction of the maxillary second or third molar.

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