Module 4

Question 1

What is the only branch of the Trigeminal Nerve that has motor and sensory function?

Answer 1

Mandibular (V3)

Question 2

The Mandibular branch of the Trigeminal Nerve exits through the foramen ______?

Answer 2

ovale

Question 3

What part of the Mandibular Nerve feeds the Inferior Alveolar, Mental, Incisive, and Lingual Nerves?

Answer 3

Posterior Trunk

Question 4

What nerve joins up with the lingual nerve?

Answer 4

Chorda Tympani

Question 5

The Lingual nerve gives sensory function to the ______ of the tongue, mucosa of the ______ and to all mandibular ______ gingiva?

Answer 5

ant. 2/3
floor of mouth
lingual

Question 6

The Mandibular Nerve descends down the _______ side of the ______?

Answer 6

medial

ramus

Question 7

Before the mandibular nerve enters the mandibular canal it breaks off a piece that becomes the ________ nerve?

Answer 7

mylohyoid

Question 8

What is the mandibular nerve called once it enters the mandibular canal?

Answer 8

Inferior Alveolar Nerve

Question 9

What is the Inferior Alveolar nerve called once it exits the Mental Foramen?

Answer 9

Mental Nerve

Question 10

What is the part of the IA nerve called that remains inside the bone but is PAST the mental foramen upto the midline?

Answer 10

Incisive Nerve

Question 11

The Inferior Alveolar Injection anesthetizes what 4 nerves?

Answer 11

IA
Mental
Incisive
Lingual

Question 12

What is the failure rate of the IA injection? Why?

Answer 12

15-20%

due to anatomy, trauma, or just a bad day

Question 13

What are the 5 landmarks when giving an IA injection?

Answer 13

Lingula
Pterygomandibular Raphe
Coronoid Notch
Angle of Mandible
Occlusal plane of MN post. teeth

Question 14

You want to insert the needle at what location in relation to the coronoid notch when giving an IA injection?

Answer 14

at the height of the notch

Question 15

Where should the barrel of the syringe lie while giving an IA injection?

Answer 15

over the premolars on the opposite side

in corner of mouth

Question 16

The needle should be ______ to the occlusal plane while giving an IA injection?

Answer 16

parallel

Question 17

How deep should the needle penetrate for an IA injection?

Answer 17

20-25 mm

2/3 of a long needle, 4/5 of a short needle

Question 18

The insertion point for a Long Buccal Injection is _____ and ______ to the most distal molar?

Answer 18

distal

buccal

Question 19

What structures are anesthetized during a Long Buccal Injection?

Answer 19

Buccal tissue of the 1st, 2nd, 3rd molars

Question 20

What structures are anesthetized during an IA injection?

Answer 20

Everything up to the midline EXCEPT the buccal tissues of the 1st, 2nd, 3rd molars
Ant. 2/3 of tongue
floor of mouth

Question 21

The insertion of the IA injection is about __-___mm above the occlusal plane on the _____ side of the mandibular ramus?

Answer 21

6-10

lingual

Question 22

What structures does a Mental Nerve Injection anesthetize?

Answer 22

Buccal Tissue anterior to the mental foramen
(2nd premolar forward to midline)
Skin of lower lip and chin

Question 23

What is the insertion point of an Mental Nerve Injection?

Answer 23

Mucobuccal fold between the premolars

sometimes around canine area

Question 24

What is the insertion point of an Incisive Nerve Injection?

Answer 24

Mental Foramen

Question 25

What structures does an incisive Nerve Injection anesthetize?

Answer 25

Pulps and buccal soft tissue of MN centrals through premolars
Skin of lower lip and chin