MSA 1

Question 1

name three treatment options other than periradicular surgery

Answer 1

attempt prthograde retreatment
extraction
monitor

Question 2

what is the two criteria for valid consent

Answer 2

voluntary
informed

Question 3

name 6 things you would tell a patient for valid consent

Answer 3

options for treatment
why procedure is necessary
consequences risks and benefits
prognosis
recommended option
cost
what might happen if treatment isnt carried out

Question 4

what are four stainless steel mishaps/ faults

Answer 4

ledges
canal blockage
apical zipping
perforations

Question 5

what is the problem with ledges with stainless steel files

Answer 5

ledge is internal transportation of the canal which occurs when working short of the length and are difficult to bypass

Question 6

what is canal blockage in relation to stainless steel files

Answer 6

caused by dentine debris getting packed into the apical portion of the root and attempted to remove this can result in false canal being cut and possible perforation

Question 7

what is apical zipping

Answer 7

result of the tendency of stainless steel instrument to straighten inside a curved canal which results in over-enlargement and results in teardrop shape canal

Question 8

what are two benefits of copper enriched amalgam

Answer 8

copper increases strength and hardness of amalgam
copper enriched products and non-y2 amalgam are higher in copper which gives higher early strength, less creep, higher corrosion resistance and increased durability

Question 9

what is the zinc function in amalgam

Answer 9

zinc is the scavenger molecule during production of amalgam, which preferentially oxidises and forms slag
zinc is no longer incorporated as it reacts with water and creates poor marginal seal