H&N ANATOMY Midterm Review

Orientation of the syringe for the anterior middle superior alveolar nerve block SHOULD be from the contralateral premolars. The angle of the needle SHOULD be placed at approximately 45 degrees to the injection site.

• Both statements are true.

• Both statements are false.

When administering a local anesthetic agent to a patient’s teeth and their related dental structures, which three bones of the head and neck have the landmarks essential for clinically effective injection technique?

• Maxillae, mandible, and palatine bones

• Maxillae, mandible, and sphenoid bones

Only one injection is necessary when anesthetizing BOTH the right and left maxillary anterior palate and associated palatal gingival tissue. Pressure anesthesia during the nasopalatine local anesthetic nerve block is NOT helpful with patient comfort.

• The first statement is true; the second statement is false.

• The first statement is false; the second statement is true.

Which of the following descriptions concerning the injection site for the anterior middle superior alveolar local anesthetic nerve block is CORRECT?

• Approximately midway between the median palatine raphe and the palatal gingival margin of the maxillary premolars

• Approximately10 mm medial and directly superior to the palatal gingival margin of the maxillary third molar, anterior to the depression of the greater palatine foramen

Which of the following angulations of the needle MUST be followed during the administration of the posterior superior local anesthetic nerve block?

• Superiorly at approximately 45 degrees and medially at approximately 90 degrees to the occlusal plane

• Superiorly at approximately 45 degrees and medially at approximately 45 degrees to the occlusal plane

Which of the following effects is prevented from occurring on the target nerve during the administration of a local anesthetic agent?

• Resting potential

• Action potential

Which of the following actions could result from involvement by the efferent part of the fifth cranial nerve?

• Toothache in the jaw

• Chewing a piece of gum

Discomfort from an infection of BOTH the frontal and ethmoidal sinuses would be associated with involvement of which of the following nerves?

• Frontal nerve

• Nasociliary nerve

During an oral surgical procedure on the posterior hard palate, which of the following nerves MUST be anesthetized to provide patient comfort?

• Greater palatine nerve

• Lesser palatine nerve

Which of the following nerve branches of the facial nerve supplies motor innervation to the buccinator, risorius, and upper lip muscles?

• Buccal nerve branch

• Mandibular nerve branch