maxilla anatomical considerations

Question 1

largest CN?

Answer 1

Trigeminal nerve is the largest cranial nerve

Question 2

portions of CN5

Answer 2

 Small motor
 Large sensory root

Question 3

origin? exit point? innervates?

motor portion cn5

Answer 3

Originate: motor nucleus in pons and medulla oblongata

 Foramen Ovale ( where it exits cranium)

 Innervate
 Masticatory muscle( masseter, temporalis, med/lat pterygoid)
 Mylohyoid
 Anterior belly of digastric
 Tensor tympani
 Tensor veli palatini

Question 4

origin? divisions?

sensory root CN5

Answer 4

Originate: At petrous portion of Temporal bone

3 divisions
 Ophthalmic V1: Superior Orbital Fissure
 Maxillary 2: Foramen Rotundum
 Mandibular V3: Foramen Ovale

Question 5

role? supplies? major branches?

CNV1

Answer 5

 Opthalmic Division
 Exclusively sensory
 Supply:Eyeball, conjunctiva, lacrimal gland, Mucous membrane of nose and paranasal sinuses, and skin of forehead, eyelid, and nose

 Major branches: Nasociliary nerve, Frontal Nerve, Lacrimal Nerve

Question 6

role? origins?

Maxillary Division V2

Answer 6

 Purely Sensory
 Origins:
Foramen Rotundum
Pterygopalatine Fossa
Inferior orbital fissure/canal
Infraorbital foramen

Question 7

 Branches for V2 (Maxillary)

Answer 7

 Middle Meningeal Nerve
 Pterygopalatine fossa: Zygomatic nerve, Pterygopalatine nerve (Orbital, Nasal(nasopalatine), Palatine (greater palatine nerve), Pharyngeal), Posterior superior alveolar nerve (PSA)

 Infraorbital canal: Middle superior alveolar (MSA), Anterior superior alveolar (ASA)

 Face (after exiting infrabortibal foramen)

Question 8

palatal nns

Answer 8

Question 9

nasal nn’s of CNV

Answer 9

Question 10

CNV nns of pterygopalatine fossa

Answer 10

Question 11

Facial Branch of V2

Answer 11

Question 12

MSA nerve is to be present in ____ % of time

Answer 12

28%

Question 13

ASA provides pulpal innervation to? as well as?

Answer 13

 Central and lateral incisors
 Canine
 PDL, buccal bone, mucous membrane of these teeth

Question 14

 3 major types of local
anesthesia

Answer 14

Local Infiltration
Field Block
Nerve Block

Question 15

local infiltration

Answer 15

numb only end of nn, very small area affected

Question 16

field block

Answer 16

higher injection than local=more tissues numb

Question 17

nn block

Answer 17

numbs most teeth innerbvated by nn

Question 18

where is CNV ganglion in skull

Answer 18

petrous portion of temporal

Question 19

foramen of CNV

Answer 19

V1: SOF
V2: rotundum
V3: ovale

Question 20

what foramen is present in the pterygopalatine fossa

Answer 20

rotundum (CNV2)

Question 21

nn of V2 inn the dura mater

Answer 21

middle meningial

Question 22

which branch of CNV is sensory AND motor

Answer 22

CNV3