Anatomy Review Flashcards
the maxillary division is ___________ (sensory, motor, mixed)
sensory: pain, touch, temp
what two bones make up the palate?
maxilla & palatine
T/F the max teeth are located in both the maxilla and the palatine
False! all max teeth are w/n the maxilla
because the maxilla is __________ the anesthetic freely difuses
porous
the greater palatine foramen has what kind of angle and shape?
forward and oval
what are the compartments of the maxillary division?
middle cranial fossa
pterygopalatine fossa
infraorbital canal
face
what fossa is the PSA located in?
the pterygopalatine fossa
what fossa is the MSA/ASA located in?
infraorbital canal
where does V1 exit the cranial base?
superior orbital fissure
where does V2 exit the cranial base?
foramen rotundum
where does V3 exit the cranial base?
foramen ovale
what are the major branches assoc. withe the pterygopalatine ganglion that are useful for dentistry
nasopalatine
greater palatine
T/F the greater palatine n. is assoc with soft tissue innervation
True
what’s the area that’ll get numb if you inject the greater palatine nerve?
palatal gingiva from premolars posteriorly
mucosa of hard palate in area
how should you inject the greater palatine n?
angle forward
T/F there is only one nasopalatine n. that exits the incisive foramen
False! 2 nasopalatine nerves
T/F when getting the nasopalatine n. numb, you’ll always get both numb and not just one side
true
what’s the best way to avoid giving the pt a hematoma when giving the PSA block?
use a short needle
what’s the concern when giving the PSA?
giving a hematoma by hitting the pterygoid plexus
________% of individuals have the MSA?
30%
what will get numb if you hit the MSA in pt’s that have it?
-mesiobuccal root of the 1st max molar (possibly)
-buccal gingiva and mucosa
-max sinus
what will get numb with the ASA
-canine and incisors
-facial gingiva and mucosa
-max sinus/nasal cavity
what’s another name for the infraorbital nerve block?
ASA nerve block
what’s an exterior landmark that you can use to hit the infraorbital nerve block?
the pupil will line up with foramen
with an infraorbital nerve block what will also get numb in addition to the structures that get numb with the ASA/MSA block?
lower eyelid
lateral side of nose
upper lip
with a maxillary division block what nerves (assoc with dentistry) will be blocked
-greater palatine (lesser as well, but not assoc with dentistry)
-nasopalatine
-PSA
-MSA (if present)
-ASA
what’s another name for the buccal n.?
long buccal
what kind of nerve is the buccal nerve? (sensory, motor, mixed) and where does it go to?
sensory
-sensation to gingiva along buccal shelf
-retromolar trigone
-all along gingiva of mand molars
V3 branch is __________ (sensory, motor, mixed)
mixed
what is attached to the lingula?
sphenomandibular lig
T/F local infiltration is better on the mand vs. the max
False. the cortical plates are thicker so locals are harder
what’s the importance of the mylohyoid line?
separates mouth
mylohyoid muscle attaches here
what’s the importance of the lingual tuberosity
lingual nerve lies in contact with it and it can be compressed with dental work (e.g. exts)
what are the 8 muscles that V3 gives motor function to?
muscles of mastication:
-temoporalis
-masseter
-medial pterygoid
-lateral pterygoid
Mylohyoid
ant. belly of digastric
tensor tympani
tensor veli palatini
all ant./post. divisions of the mandible are part of what fossa?
infratemporal fossa
what is the auriculotemporal nerve asssoc with regarding dentistry?
the nerve of the TMJ
what division does the buccal n. belong to?
the ant. division
what division does the lingual, IA, incisive, & mental nn’s belong to?
post. division
T/F the incisive n. goes to the soft tissue while the mental n. goes to the teeth
false!
mental = soft tissue
incisive = teeth
what muscle does the buccal nerve pierce?
the buccinator
T/F the buccal n. innervates the buccinator
False. innervated by facial
after it pierces the muscle, where does the buccal nerve lie?
along the buccal shelf
T/F the buccal nerve will not be anesthetized when doing an IA block
True
where does the lingual nerve pass?
inferiorly on the medial pterygoid in the pterygomandibular space
what does the lingual n. innervate?
-epithelium of the ant. 2/3rds of tongue
-all lingual gingiva and lingual mucosa along the floor of the oral cavity
where does the IA nerve pass?
inferiorly on the medial pterygoid in the pterygomandibular space lying lateral to the sphenomandibular lig.
what does the IA divide into?
the incisive and mental nn’s
what does the IA innerveate?
all mand teeth & PDL through dental plexus (specifically from molars to 2nd premolar)
what will the mental nerve supply?
-chin
-buccal gingiva and mucosa from premolars ant.
-lower lip
what’s the closest you’ll get to a V3 nerve block?
gow-gates
