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MODULE 5 ORAL SURGERY > COMPLICATIONS > Flashcards

COMPLICATIONS Flashcards

1
Q

what is the term for limited mouth opening?

A

trismus

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2
Q

what anatomical feature may overlie an upper 7?

A

root of the zygoma

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3
Q

what anatomical feature may be found around the apices of the lower 4 or 5?

A

mental neurovascular bundle

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4
Q

what happens if the mental neurovascular bundle is distrupted?

A

altered sensation of lower lip
*very unlikely

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5
Q

what is it called when a tooth is left in the palate?

A

an ectopic tooth

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6
Q

what do you call the direction of an 8 horizontally impacting a 7?

A

mesioangular

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7
Q

what anatomical feature is found at the apices of the lower 8s sometimes?

A

inferior alveolar neurovascular canal

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8
Q

what other nerve should be anaesthetised as well as the IAN?

A

lingual and long buccal

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9
Q

how is LA tested prior to xLA?

A

probing around tooth with sharp probe

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10
Q

what area does the zygoma insert in to?

A

maxillary buttress

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11
Q

what has happened if you want to give a mental nerve block but only the lower lip is numb?

A

you haven’t anaesthetised the terminal branch

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12
Q

what pathway is used for LA systemic toxicity?

A

CYP450 1A2/ 3A4

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13
Q

what drugs are strong inhibitors of CYP1A2? and may slow metabolism?

A

verapamil - Ca channel blockers

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14
Q

what are inducers of CYP1A2 and have the potential for quicker metabolism?

A

broccoli
insulin
omeprazole

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15
Q

what drugs may retard metabolism of lidocaine?

A

SSRI’s
Clopidogrel
warfarin
caffeine

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16
Q

what interaction exists between St Johns wort and lidocaine?

A

St Johns Wort may speed up the metabolism of lidocaine

17
Q

what are early signs of CNS LA systemic toxicity?

A

muscle twitching
agitation - auditory change
tinnitus
metallic taste

18
Q

what are late signs of CNS LA systemic toxicity?

A

depression
perioral tingling
drowsiness
unconsciousness
resp arrest

19
Q

how may LA systemic toxicity affect the CVS?

A

reduced excitability of myocardium
vasodilation
CVS collapse
may be secondary to hypoxaemia

20
Q

list the types of displacement

A

infratemporal fossa - removal of U8 when tooth is partially erupted, root curves distally

subperiosteal - when small bit of root is left and tried to removed if there is an area of thinned/ fenestrated bone

lingual tissues - roots are fenestrating area of thin bone, attempt to retrieve root after fracture

Inferior alveolar canal

Maxillary antrum - canines and first premolars

21
Q

OAC issues?

A

perforation of max sinus
required repair
find the root that has been displaced
may need ENT referral

MODULE 5 ORAL SURGERY (7 decks)

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