Exam 2 - alginate

impression

negative likeness of an object

working time

how long you have before you need to get it into the pt’s mouth

setting time

how long you have after it’s in pt mouth till it sets

alginate

irreversible hydrocolloid

alginate

low accuracy

polysulfide

very accurate

polysulfide

used for edentulous

clearance of tray in pt mouth

3-5mm

scoops for maxilla

3

scoops for mandible

2

which dentition first for impressions

lower

what comes first when mixing alginate

water

what comes second when mixing alginate

powder

insert tray _____ to _____

back , front

do not insert tray _____ to _____

front, back

how many minutes do you let the impression sit with cavicide

3

pour cast within __ minutes

10

what is alginate made of

seaweed

When is the stone set

When it’s no longer warm