Anesthesia Ch. 12

Front 1

T/F

The trigeminal nerve is the largest of the cranial nerves

Back 1

true

Front 2

What number is the trigeminal nerve?

Back 2

it is the 5th cranial nerve

Front 3

T/F

The trigeminal nerve has both sensory and motor components

Back 3

true

Front 4

What does the motor portion supply?

Back 4

muscles of mastication

Front 5

What does the sensory portion supply?

Back 5

teeth, bone, and soft tissue of the oral cavity

Front 6

Trigeminal means ___________

Back 6

three

Front 7

What are the 3 divisions of the trigeminal nerve?

Back 7

V1- Opthalmic division (sensory)

V2- Maxillary division

V3- Mandibular division

Front 8

Which division is purely sensory and the smallest of the three divisions?

Back 8

Opthalmic division

Front 9

What does the opthalmic division supply?

Back 9

eyeball

conjuctiva

lacrimal gland

parts of the mucous membrane of the nose and paranasal sinuses

skin of the forehead

eyelids

nose

Front 10

What does the maxillary division supply?

Back 10

nasopharynx

maxillary sinus

soft palate

tonsil

hard palate

maxillary teeth and periodontal tissues

skin of the midface, lower eyelid, side of the nose and upper lip

Front 11

T/F

The maxillary division of the trigeminal nerve split into branches

Back 11

true

Front 12

What are the two branches (groups) which are important to local anesthesia?

Back 12

1) pterygopalatines

2) posterior superior alveolar

Front 13

T/F

The naso branch of the pterygopalatines contains the naso palatine

Back 13

true

Front 14

What does the naso palatine supply?

Back 14

palatal mucosa via the incisive canal and incisive foramen

located in the midline of the palate, located about 1 cm posterior to the maxillary incisiors

Front 15

T/F

The palatine branch of the pterygopalatines contains the greater palatine nerve

Back 15

true

Front 16

What does the greater palatine supply?

Back 16

palatal soft tissue and bone up to and including 1st premolar and some of the soft palate

enters through the greater palatine foramen, which is usually located distal to the second molar and about a mm toward the palatal midline

Front 17

T/F

The posterior superior alveolar nerve (PSA) provides sensory innervation to the alveoli, periodontal ligaments and pulpal tissues of the maxillary third, second, and first molars.

Back 17

true

Front 18

T/F

It has been found that in about 28% of patients, the mesial buccal root of the first molar is not anesthetized

Back 18

true

Front 19

What injections will we be doing for board exams?

Back 19

PSA and IA

Front 20

(MSA) Middle superior alveolar nerve comes from what division of the trigeminal nerve?

Back 20

maxillary division

Front 21

What nerve provides nervous innervation to the two maxillary premolars, maybe the mesiobuccal root of the first molar, buccal soft tissue and bone in the premolar area?

Back 21

the middle superior alveolar nerve (MSA)

Front 22

What are the two branches of significance in dentistry that come from the maxillary division?

Back 22

1) MSA

2) ASA

Front 23

What nerve supplies the central, lateral, and canine, including the periodontal tissue, buccal soft tissue, bone and pulps? (unilaterally)

Back 23

Anterior superior alveolar nerve (ASA)

Front 24

What is the dental plexus?

Back 24

nerve network of innervation of all teeth, surrounding bone and periodontal structures (maxilla and mandible)

Front 25

The superior dental plexus is made up of small fibers of ______, ______, ______, and _______

Back 25

ASA, MSA, PSA, and IA

Front 26

What are the 3 types of nerves that emerge from the superior dental plexus?

Back 26

1) dental nerves

2) interdental nerves

3) interradicular nerves

Front 27

Dental nerves

Back 27

enters the tooth through the apical foramen, making up the pulpal tissue

Front 28

Interdental nerves

Back 28

also termed perforating branches

provide sensory innervation to the periodontal ligaments via alveolar bone

Front 29

Interradicular nerves

Back 29

provides sensory innervation to the periodontal ligaments of adjacent roots

terminate in the PDL at the root furcations

Front 30

What is the largest division of the trigeminal nerve?

Back 30

the mandibular division

Front 31

Mandibular division

Back 31

largest and mixed branch of trigeminal nerve

mostly sensory and some motor

Front 32

What are the 3 branches of the mandibular division?

Back 32

1) undivided nerve

2) anterior division

3) posterior divison

Front 33

T/F

All V3 injections are unilateral

Back 33

true

Front 34

Anterior division of V3 turns into...

Back 34

turns into buccal or long buccal nerve or buccinator nerve

Front 35

The anterior division of V3 innervates...

Back 35

innervates buccal gingiva and buccal mucous membranes of cheek and of mandibular molars, NOT THE LIP

the anterior division also innervates the motor innervation of the muscles of mastication

Front 36

T/F

Anesthesia of the buccal nerve is important for dental procedures requiring soft tissue manipulation on the buccal surface of the mandibular molars

Back 36

true

Front 37

The posterior division of the mandibular division divides into 3 branches. Only 2 of them are important to local anesthesia. What are they?

Back 37

1) lingual nerve

2) inferior alveolar nerve

Front 38

What nerve supplies the anterior 2/3 of the tongue, floor of the mouth, lingual gingiva of the teeth and supplies sensation and taste?

Back 38

Lingual nerve

(part of the posterior division of the mandibular division of the trigeminal nerve)

Front 39

Which branch is larger, the lingual nerve or the inferior alveolar nerve?

Back 39

inferior alveolar nerve

Front 40

Inferior alveolar nerve

Back 40

enters the mandibular canal through the mandibular foramen and travels up to mental foramen where it divides into the incisive and mental nerves.

Front 41

T/F

Sometimes the IA is bifid making adequate anesthesia difficult

Back 41

true

Front 42

The inferior alveolar nerve innervates...

Back 42

the teeth up to the central incisors, chin, lip, tongue and buccal mucosa

Front 43

Name the 2 terminal branches that the inferior alveolar nerve divides into:

Back 43

1) mental nerve

2) incisive nerve

Front 44

Mental nerve

Back 44

at the mental foramen, it comes out of the canal and into the soft tissue

Front 45

The mental nerve innervates...

Back 45

buccal soft tissue and mucous membrane of the lip

the skin of the lip and chin (from mental foramen to central incisor)

Front 46

Incisive nerve

Back 46

at the mental foramen, it remains in the canal

Front 47

The incisive nerve innervates...

Back 47

pulps and surrounding bone of 1st premolar, canine, and incisors

Front 48

T/F

A successful IA will numb the mental and incisive nerves as well

Back 48

true

Front 49

T/F

Infiltrations are more effective on the mandible

Back 49

false

they are more effective on the maxilla

Front 50

Canine eminence

Back 50

protuberance of bone corresponding to the root

Front 51

Infra orbital foramen

Back 51

through which the infraorbital nerve passes

superior and distal to the canine eminence

Front 52

Maxillary bone

Back 52

is more porous, cancellous bone

local anesthetics can diffuse through the bone easily

this is why infiltrations work on the maxilla

Front 53

Mandibular bone

Back 53

dense, cortical bone

local anesthetics cannot diffuse through the bone easily