LA - Dental LA Regional Blocks

Question 1

inferior alveolar nerve block - aim to deposit LA where?

Answer 1

close to inferior alveolar nerve, before it enters the mandible via mandibular foramen

Question 2

what are the components of the pterygomandibular space?

hint: lateral, medial, posterior, anterior, superior components

Answer 2

lateral: ramus
medial: medial pterygoid
posterior: parotid + CN9
anterior: buccinator
superior: lateral pterygoid

Question 3

IAN block - which two landmarks to inject between

Answer 3

2 imaginary lines:

• coronoid notch of mandible
• pterygomandibular raphe (mouth must be open wide to identify)

Question 4

avoid carrying out bilateral IAN blocks - why?

Answer 4

numbing both sides results in loss of control of tongue and lips - not good

Question 5

which regional block is similar to that of IAN blocks?

Answer 5

lingual nerve blocks, region to inject is the same. injection should hit both nerves but this does not always occur

Question 6

long buccal nerve block - inject at which region?

used for?

Answer 6

• buccal side, posterior to last tooth

- for extraction and to numb buccal tissue

Question 7

mental/incisive nerve block - inject where?

Answer 7

between apices of 4 and 5, area below tooth apex, towards mental foramen