Deck 18: Anatomy of Intraoral Injections

Question 1

Why is the infiltration technique often used to anesthetize the terminal branches of the maxillary nerve?

Answer 1

The maxillary cortical bone is thin and porous, allowing anesthetic to infiltrate through the bones to reach the nerves.

Question 2

Why is the supraperiosteal technique ineffective when trying to anesthetize branches of the mandibular nerve?

Answer 2

The cortical plates of the mandible are too thick for anesthetic to penetrate by diffusion.

Question 3

What is the best technique for preventing damage to blood vessels when performing an intraoral injection?

Answer 3

Aspiration of the needle to check for blood

Question 4

The infraorbital nerve in the floor of the orbit gives rise to the anterior superior alveolar nerve.

Question 5

The posterior superior alveolar nerve innervates the maxillary molar teeth with the possible exception of the mesial buccal root of the first molar.

Question 6

The supraperiosteal technique is used to anesthetize the terminal branches of mandibular teeth.

Question 7

The needle should always be placed into the greater palatine foramen to ensure proper anesthesia of the greater palatine nerve.

Question 8

Placing a needle into the mental foramen may damage the mental nerve.

Question 9

The inability to open the mouth is known as ____________________.

Question 10

While administering an inferior alveolar nerve block, a slow-developing hematoma appears in the space below the zygomatic bone. What structure was probably punctured by the hypodermic needle?

A) Inferior alveolar artery
B) Medial pterygoid muscle
C) Pterygoid plexus
D) Vessels in the parotid gland
E) Maxillary artery

Question 11

Which of the following areas would be rendered insensitive from a long buccal nerve block?

A) Buccal gingiva of all mandibular teeth
B) Buccal gingiva of the mandibular molar teeth
C) Buccal gingiva of all maxillary teeth
D) Buccal gingiva of maxillary molar teeth
E) Buccal gingiva of all maxillary and mandibular molar teeth

Question 12

Anesthetic deposited medial to the sphenomandibular ligament would render which of the following structures insensitive?

A) Roots of the mandibular canine teeth
B) Lingual gingiva of all mandibular teeth
C) Floor of the mouth
D) Buccal gingiva of all mandibular teeth
E) Tongue

Question 13

Which of the following nerves must be anesthetized in order to render the palatal gingiva of the maxillary premolar teeth insensitive?

A) Nasopalatine
B) Inferior alveolar
C) Posterior superior alveolar
D) Greater palatine
E) Middle superior alveolar

Question 14

Which of the following nerves must be anesthetized for a crown preparation on a mandibular second molar tooth? (Select all that apply.)

A) Mental nerve
B) Inferior alveolar nerve
C) Lingual nerve
D) Incisive nerve
E) Long buccal nerve

Question 15

An injection into the mucosa lateral to the pterygomandibular fold can be used to block which of the following nerves? (Select all that apply.)

A) Incisive
B) Inferior alveolar
C) Mental
D) Lingual
E) Long buccal

Question 16

An injection into the foramen between the roots of the first and second mandibular premolars would block which of the following nerves? (Select all that apply.)

A) Incisive
B) Inferior alveolar
C) Mental
D) Lingual
E) Long buccal

Question 17

Which of the following branches of the mandibular nerve do not supply teeth? (Select all that apply.)

A) Incisive
B) Inferior alveolar
C) Mental
D) Lingual
E) Long buccal

Question 18

In addition to the inferior alveolar nerve, which of the following need to be anesthetized for dental procedures of the mandibular molars and surrounding soft tissues? (Select all that apply.)

A) Nasopalatine nerve
B) Long buccal nerve
C) Lingual nerve
D) Greater palatine nerve
E) Posterior superior alveolar nerve

Question 19

Which of the following structures would likely be rendered insensitive by a posterior superior alveolar nerve block? (Select all that apply.)

A) Mucosa of the maxillary sinus
B) Buccal gingivae of the maxillary premolars
C) Roots of the maxillary molar teeth
D) Palatal gingivae of the maxillary premolars
E) Buccal gingivae of the maxillary molars

Question 20

A patient enters your dental clinic complaining of a toothache in the maxillary premolar and first molar regions. Upon examination, you do not find any underlying dental problems; however, you notice that the patient is likely suffering from a severe maxillary sinus infection. Which of the following nerves are the most likely sources of the pain? (Select all that apply.)

A) Anterior superior alveolar
B) Middle superior alveolar (when present)
C) Posterior superior alveolar
D) Greater palatine
E) Nasopalatine

Question 21

When present, which of the following structures would be innervated by the middle superior alveolar nerve? (Select all that apply.)

A) Roots of the maxillary molars
B) Mesiobuccal root of the maxillary first molar
C) Buccal gingivae of the maxillary molars
D) Roots of the maxillary premolars
E) Mucosa of the maxillary sinus

Question 22

Which of the following characteristics can be used to determine the effectiveness of an infraorbital nerve block? (Select all that apply.)

A) Numbness of the upper lip
B) Numbness of the side of the nose
C) Numbness of the premolar buccal gingivae
D) Numbness of the lower eyelid
E) Numbness of the palatal mucosa

Question 23

Which of the following structures would be rendered insensitive after a successful inferior alveolar nerve block? (Select all that apply.)

A) Upper lip
B) Lower lip
C) Skin anterior to the ear
D) Floor of the mouth
E) Chin

Question 24

When performing a posterior superior alveolar nerve block, which of the following structures would most likely be damaged by the aberrant placement of the needle? (Select all that apply.)

A) Periosteum
B) Palate
C) Pterygoid plexus
D) Posterior superior alveolar artery
E) Maxillary artery

Question 25

When performing an inferior alveolar nerve block, which of the following structures should be avoided in the pterygomandibular space? (Select all that apply.)

A) Branches of the first part of the maxillary artery
B) Branches of the pterygoid plexus of veins
C) Branches of the second part of the maxillary artery
D) Sphenomandibular ligament
E) Branches of the third part of the maxillary artery

Question 26

Which of the following structures would be anesthetized by a successful infraorbital nerve block? (Select all that apply.)

A) Mesiobuccal root of the first maxillary molar
B) Labial gingiva of the maxillary incisors
C) Side of the nose
D) Buccal gingiva of the maxillary premolars
E) Upper lip

Question 27

Match the nerves with the teeth and surrounding soft tissue they supply. There is more than one answer, and nerves can be used once, more than once, or not at all.

-Maxillary second and third molars

A) Anterior superior alveolar
B) Nasopalatine
C) Middle superior alveolar
D) Greater palatine
E) Lesser palatine
F) Posterior superior alveolar
G) Long buccal

Question 28

Match the nerves with the teeth and surrounding soft tissue they supply. There is more than one answer, and nerves can be used once, more than once, or not at all.

-Maxillary first premolar

A) Anterior superior alveolar
B) Nasopalatine
C) Middle superior alveolar
D) Greater palatine
E) Lesser palatine
F) Posterior superior alveolar
G) Long buccal

Question 29

Match the nerves with the teeth and surrounding soft tissue they supply. There is more than one answer, and nerves can be used once, more than once, or not at all.

-Maxillary canine

A) Anterior superior alveolar
B) Nasopalatine
C) Middle superior alveolar
D) Greater palatine
E) Lesser palatine
F) Posterior superior alveolar
G) Long buccal

Question 30

Match the nerves with the teeth and surrounding soft tissue they supply. There is more than one answer, and nerves can be used once, more than once, or not at all.

-Maxillary central incisors

A) Anterior superior alveolar
B) Nasopalatine
C) Middle superior alveolar
D) Greater palatine
E) Lesser palatine
F) Posterior superior alveolar
G) Long buccal

Question 31

Match the nerves to their area of distribution. An answer can be used once, more than once, or not at all.

-Anterior superior alveolar nerve

A) Mucobuccal fold at level of second molar
B) Mucobuccal fold above second premolar
C) Mucobuccal fold above the lateral incisor
D) Mucobuccal fold above the central incisor
E) Mucobuccal fold of the first premolar directed toward the infraorbital foramen
F) Junction between the hard palate and the lateral edge of the alveolar bone distal to the second molar
G) Incisive papilla

Question 32

Match the nerves to their area of distribution. An answer can be used once, more than once, or not at all.

-Greater palatine nerve

A) Mucobuccal fold at level of second molar
B) Mucobuccal fold above second premolar
C) Mucobuccal fold above the lateral incisor
D) Mucobuccal fold above the central incisor
E) Mucobuccal fold of the first premolar directed toward the infraorbital foramen
F) Junction between the hard palate and the lateral edge of the alveolar bone distal to the second molar
G) Incisive papilla

Question 33

Match the nerves to their area of distribution. An answer can be used once, more than once, or not at all.

-Infraorbital nerve

A) Mucobuccal fold at level of second molar
B) Mucobuccal fold above second premolar
C) Mucobuccal fold above the lateral incisor
D) Mucobuccal fold above the central incisor
E) Mucobuccal fold of the first premolar directed toward the infraorbital foramen
F) Junction between the hard palate and the lateral edge of the alveolar bone distal to the second molar
G) Incisive papilla

Question 34

Match the nerves to their area of distribution. An answer can be used once, more than once, or not at all.

-Middle superior alveolar nerve

A) Mucobuccal fold at level of second molar
B) Mucobuccal fold above second premolar
C) Mucobuccal fold above the lateral incisor
D) Mucobuccal fold above the central incisor
E) Mucobuccal fold of the first premolar directed toward the infraorbital foramen
F) Junction between the hard palate and the lateral edge of the alveolar bone distal to the second molar
G) Incisive papilla

Question 35

Match the nerves to their area of distribution. An answer can be used once, more than once, or not at all.

-Nasopalatine nerve

A) Mucobuccal fold at level of second molar
B) Mucobuccal fold above second premolar
C) Mucobuccal fold above the lateral incisor
D) Mucobuccal fold above the central incisor
E) Mucobuccal fold of the first premolar directed toward the infraorbital foramen
F) Junction between the hard palate and the lateral edge of the alveolar bone distal to the second molar
G) Incisive papilla

Question 36

Match the nerves to their area of distribution. An answer can be used once, more than once, or not at all.

-Posterior superior alveolar nerve

A) Mucobuccal fold at level of second molar
B) Mucobuccal fold above second premolar
C) Mucobuccal fold above the lateral incisor
D) Mucobuccal fold above the central incisor
E) Mucobuccal fold of the first premolar directed toward the infraorbital foramen
F) Junction between the hard palate and the lateral edge of the alveolar bone distal to the second molar
G) Incisive papilla

Question 37

Match the nerves to their area of distribution. An answer can be used once, more than once, or not at all.

-Palatal gingiva of the maxillary second molar tooth

A) Nasopalatine nerve
B) Long buccal nerve
C) Greater palatine nerve
D) Lingual nerve
E) Inferior alveolar nerve

Question 38

Match the nerves to their area of distribution. An answer can be used once, more than once, or not at all.

-Lingual gingiva of the mandibular central incisor tooth

A) Nasopalatine nerve
B) Long buccal nerve
C) Greater palatine nerve
D) Lingual nerve
E) Inferior alveolar nerve

Question 39

Match the nerves to their area of distribution. An answer can be used once, more than once, or not at all.

-Mucosa of the secondary palate

A) Nasopalatine nerve
B) Long buccal nerve
C) Greater palatine nerve
D) Lingual nerve
E) Inferior alveolar nerve

Question 40

Match the nerves to their area of distribution. An answer can be used once, more than once, or not at all.

-Buccal gingiva of mandibular first molar tooth

A) Nasopalatine nerve
B) Long buccal nerve
C) Greater palatine nerve
D) Lingual nerve
E) Inferior alveolar nerve

Question 41

Match the nerves to their area of distribution. An answer can be used once, more than once, or not at all.

-Palatal gingiva of the maxillary canine tooth

A) Nasopalatine nerve
B) Long buccal nerve
C) Greater palatine nerve
D) Lingual nerve
E) Inferior alveolar nerve

Question 42

Match the nerves to their area of distribution. An answer can be used once, more than once, or not at all.

-Buccal gingiva of the mandibular first premolar tooth

A) Nasopalatine nerve
B) Long buccal nerve
C) Greater palatine nerve
D) Lingual nerve
E) Inferior alveolar nerve