LA and IDB

Question 1

what is local anesthesia?

Answer 1

loss of sensation in a circumscbribed area of the body by a depression of excitation in nerve cell endings or an inhibition of the conduction process in peripheral nerves

Question 2

how is pain abolished?

Answer 2

by interrupting the pathways that carry the information of the stimulus from the periphery of the body to the CNS/by removing the stimulus
anaesthetic solution to sensory nerves

Question 3

nerve cells can transmit electrical changes which leads to?

Answer 3

propogation of an action potential
= change in ion distribution and alters membrane potential
ion channels are blocked by LA solutions

Question 4

inf alv nerve is what branch of mandib nerve? trigeminal?

Answer 4

sensory branch

3rd and last trunk of trigeminal

Question 5

inf alv leaves foramen ovale into?

Answer 5

infratemporal fossa
passes between lateral and medial pterygoid muscles
behind lingual nerve through mandib foramen into mandibular canal

Question 6

contraindications to an IDB?

Answer 6

haemophiliacs, anticoagulant therapy, co operation

Question 7

aim for where when doing an IDB?

Answer 7

ext oblique ridge at anterior aspect of ascending ramus
pterygomandibular raphe = fibrous structure seperating buccinator from superior constrictor muscle, runs from pterygoid hamulus to mandible at retromolar region

Question 8

how much solution for idb?

Answer 8

2ml