LA - Dental LA Equipment

Question 1

3 components of the Safety Plus system

Answer 1

1 - syringe barrel with needle (sterile, single use)
2 - LA cartridge (sterile, single use)
3 - plunger/handle. black - sterilize and reuse, white - single use

Question 2

safety plus system: needles
short vs long needle
how long is each? what type of gauge?

Answer 2

short needle:
25mm long, 30 gauge

long needle:
35mm long, 27 gauge

Question 3

intravascular injection could result in?

Answer 3

inadequate/failed anaesthesia

increased risk of systemic side effects

Question 4

what does aspiration aid and how is it achieved?

Answer 4

• aids prevention of intravascular injection

- achieved by lowering pressure in cartridge. if needle is in a vessel, blood will flow back into cartridge

Question 5

what increases the chances of false negatives?

Answer 5

• needle blockage

- narrower bores require greater aspiration pressure, more likely to give false negative