WEEK 6

Question 1

What is the most common type of LA

Answer 1

lidocaine

Question 2

With the use of sharps, remember to uncap the needle using

Answer 2

mosquito forceps

Question 3

can you recap a needle?

Answer 3

never

Question 4

what is the purpose of aspirating?

Answer 4

ensure you are not injecting into a vascular space

Question 5

what do you do if you get a positive aspiration?

Answer 5

gently remove the injection and replace cartridge

Question 6

what colour is a 30 gauge needle?

Answer 6

blue

Question 7

what colour is a 27 gauge needle?

Answer 7

yellow

Question 8

what colour is a 25 gauge needle?

Answer 8

red

Question 9

when are 30G needles used

Answer 9

infiltrations (shorter, thinner, more comfortable but flexible)

Question 10

when are 25G needles used?

Answer 10

blocks (longer, thicker, better for targeting deeper nerves with less deflection)

Question 11

how long are long needles?

Answer 11

30-40mm

Question 12

how long are short needles?

Answer 12

20-25mm

Question 13

how long are ultra short needles?

Answer 13

15mm

Question 14

what length of needle is used for blocks?

Answer 14

long

Question 15

never insert the needle at the level of the

Answer 15

hub

Question 16

where is the weakest point of the needle?

Answer 16

the hub, if breakage occurs you need to visualize it.

Question 17

why does the bevel face the bone?

Answer 17

less resistance and avoids scraping the periosteum with the sharp point of the needle

Question 18

how many mL are in a cartridge of LA?

Answer 18

2.2ml

Question 19

what is in a blue band LA?

Answer 19

lignocaine

Question 20

what is in a green band LA?

Answer 20

mepivicaine 3% (non-adrenaline)

Question 21

what is in a gold band LA?

Answer 21

articaine 4% (stronger concentration so not advised for dental blocks or children)

Question 22

what do topical anti-septics do?

Answer 22

reduce the quantity of bacteria at injection site

Question 23

how long do you leave topical anaesthetic on for?

Answer 23

2-3 mins

Question 24

what is oraqix?

Answer 24

LA with no needles, lidocaine 2.5% and prilocaine 2.5%

Question 25

how long is the duration of anaesthesia using oraquix?

Answer 25

20min

Question 26

what is the max amount of cartridges for oraqix?

Answer 26

5

Question 27

what are the indications of a mandibular infliltration?

Answer 27

anaesthetizing 1 or 2 teeth (limited to anteriors b/c of the dense cortical bone in posteriors) Can be used in addition to other techniques.

Question 28

what are the contraindications of mandibular infiltrations?

Answer 28

pulpal anaesthesia of posterior mandibular teeth, infection or acute inflammation at injection site.

Question 29

what are the anatomical landmarks for mandibular infiltrations?

Answer 29

mucobuccal fold superficial to the axis of the tooth

Question 30

what is the depth of insertion for mandibular infiltrations? where do you angulate it?

Answer 30

approximately 2-3mm angled towards alveolar ridge

Question 31

what are the indications of an IANB

Answer 31

procedures involving one or more posterior teeth in one quadrant lingual soft tissue anaesthesia is required buccal soft tissue anaesthesia required anterior to mental foramen

Question 32

what are the contraindications of IANB

Answer 32

absence of anatomic landmarks infection or acute inflammation on injection site consider if post op instruction suffices avoiding an injury

Question 33

what are the anatomical landmarks of IANB?

Answer 33

pterygomandibular space at region of mandibular foramen

Question 34

what is the anterior boundary of the pterygomandibular space? what nerve lies anteriorly?

Answer 34

buccinator and pterygomandibular raphe. lingual nerve

Question 35

what is the posterior boundary of the pterygomandibular space?

Answer 35

parotid gland

Question 36

what is the lateral boundary of the pterygomandibular space?

Answer 36

medial surface of mandible

Question 37

what is the superior boundary of pterygomandibular space?

Answer 37

lateral pterygoid muscle

Question 38

what areas are anaesthetized with an IANB?

Answer 38

mandibular teeth to midline mucous membrane anterior to mental foramen body of mandible buccal mucoperiosteum anterior 2/3 tongue on injecting site floor of mouth on injecting site lingual soft tissues and and periosteum

Question 39

what are the indications for a long buccal nerve block?

Answer 39

buccal soft tissue on mandibular molar region

Question 40

what are the contraindications of the long buccal nerve block?

Answer 40

if lingual anesthesia is required, pulpal anaesthesia of molars is required, infection or acute inflammation at point of injection

Question 41

which areas are anaesthesized for long buccal nerve block?

Answer 41

buccal soft-tissue anaesthesia of mandibular molar region.

Question 42

what are the areas anesthesized of mental nerve block?

Answer 42

buccal mucous membrane anterior to mental foramen to midline includes skin on lower lip

Question 43

what are the indications of a mental nerve block?

Answer 43

when both left and right side of mandible needs procedure in same appointment. buccal soft tissues anterior of mental foramen (soft tissue biopsy)

Question 44

what are the contraindications of mental nerve block?

Answer 44

lingual anaesthesia required, if anaesthesia posterior to mental foramen is required, infection or acute inflammation at site of injection.