Topical Anesthetic Summative

Question 1

What does ASA stand for?

Answer 1

Anterior Superior Alveolar Nerve.

Question 2

Where is the site of penetration for the ASA?

Answer 2

Facial vestibule over lateral incisor slightly angled towards the apex of the cuspid.

Feel for the prominence of the canine, go mesial, and it is right in that dip.

Question 3

Which anatomy is anesthetized by the ASA?

Answer 3

Max central incisor, lateral, canine, and the facial/buccal gingiva.

Question 4

What does MSA stand for?

Answer 4

Middle Superior Alveolar Nerve.

Question 5

Where is the site of penetration for the MSA?

Answer 5

Facial vestibule between the maxillary bicuspids; over remaining bicuspid if one is missing.

Feel for the zygomatic arch, move finger mesially, until you feel the depression.

Question 6

Which anatomy is anesthetized by the MSA?

Answer 6

Maxillary bicuspids, MB root of the 1st molar ( the 6), and the buccal gingiva.

Question 7

What does PSA stand for?

Answer 7

Posterior Superior Alveolar Nerve.

Question 8

Where is the site of penetration for the PSA?

Answer 8

Facial vestibule distal to zygomatic arch (opposite of the distal buccal root near the maxillary 2nd molar) 45 degrees to the occlusal plane, 45-90 degrees to midsagittal plane, far enough laterally in the vestibule to avoid hitting the bone.

Question 9

Which anatomy is anesthetized by the PSA?

Answer 9

Maxillary 3rd, 2nd, and 1st molars excluding the MB root of the first molars. The buccal gingiva will also be anesthetized.

Question 10

Where is the site of penetration for the greater palatine?

Answer 10

Halfway between the palatal midline and the free gingival margin anterior to the soft palate between maxillary first and second molars. Come from the opposite canine/same arch.

Question 11

Which anatomy is anesthetized by the greater palatine?

Answer 11

Palatal gingiva from the distal of the cuspid to the soft palate.

Question 12

Where is the site of penetration for the nasopalatine?

Answer 12

Incisive papilla (not into but lateral to the papillae).

Question 13

Which anatomy is anesthetized by the nasopalatine?

Answer 13

Palatal gingiva from the distal of the cuspids (bi-lateral).

Question 14

What does IAN stand for?

Answer 14

Inferior Alveolar Nerve.

Question 15

Where is the site of penetration for the IAN?

Answer 15

……………………………….

Needle parallel with the occlusal plane of the mandibular teeth

Question 16

Which anatomy is anesthetized by the IAN?

Answer 16

Mandibular teeth on that side to the midline and buccal gingiva distal of the bicuspids to the midline.

Question 17

Where is the site of penetration for the lingual nerve?

Answer 17

It is the same injection site as the IAN however, withdraw the needle 1/2 way from depth of the IAN.

Question 18

Which anatomy is anesthetized by the lingual nerve?

Answer 18

The lingual gingiva to the midline and the anterior 2/3 of the tongue to the midline.

Question 19

Where is the site of penetration for the long buccal?

Answer 19

1. 1cm above the occlusal plane medial to the external oblique ridge.
2. In the facial vestibule at the level of the buccal cusps - just distal to the last molar.

Question 20

Which anatomy is anesthetized by the long buccal?

Answer 20

Buccal gingiva of the mandibular molars and the cheek adjacent to the mandibular molar teeth.

Question 21

Where is the site of penetration for the mental?

Answer 21

Facial vestibule just distal to the mental foramen.

Question 22

Which anatomy is anesthetized by the mental?

Answer 22

Teeth anterior to the mental foramen (premolars, canine, and incisors on the one side). Buccal mucosa anterior to the mental foramen as well as the lower lip and skin of the chin on the corresponding side.