Advanced LA Techniques

Question 1

What does PDL anaesthesia efficacy depend on?

Answer 1

– Procedure
– Tooth
– Resistance to injection
– Anaesthetic solution (adrenaline increases efficacy)

Question 2

What is felt in a correct PDL injection?

Answer 2

resistance, if there is no resistance you are in the wrong place

Question 3

When should you use an intraosseus injection?

Answer 3

when all other methods do not work

Question 4

How does an intra-osseus injection work?

Answer 4

drill through soft tissue to bone then use needle to inject into cancellous space

Question 5

What teeth have the least pulpal anesthesia?

Answer 5

lower lateral incisors
overlapping innervation

Question 6

What are the uses of topical jet injectors?

Answer 6

– Bleeding predisposition, where deep injections contraindicated
– Sole means achieving LA
– Prior to conventional techniques

Question 7

What are the disadvantages of topical jet injectors?

Answer 7

– Expensive
– Could cause soft tissue damage if careless
– Frightening sight and sound
– Taste of solution

Question 8

What is gow gates technique and what does it block?

Answer 8

– Open mouth technique
– Patient lying flat
– Aim for neck of condylar process
blocks IAN

Question 9

What is the akinosi technique and what is it used to block?

Answer 9

insert needle into closed mouth
keep needle parallel

blocks IAN

Question 10

What is an advantage of the wand?

Answer 10

lower pressure meaning it does not damage PDL and does not scare patient