Week 15 Flashcards
for #9 ACC prep, how much should incisal reduction be
2 mm
where should the 1st plane on 2 plane reduction align with (ACC)
long axis of tooth
how much should be removed when doing the facial reduction (ACC)
1 (~1.2) mm
what should the lingual retentive plane align with (ACC)
first plane on the facial
what is very easy to undercut on an ACC
lingual reduction
what bur for anterior ACC lingual reduction
379
how much lingual reduction/clearance (anterior ACC)
1.5 mm
chamfer or shoulder all the way around for anterior ACC?
shoulder
what should the multi-planed axial reduction mimic for #9 ACC
shape of #8 and #10
how far to extend custom tray
3-5 mm below gingival crest
how many layers of wax to use for custom tray? this is equivalent to what?
2 layers
this is equivalent of 3 mm polyvinyl siloxane (PVS)
dimensions of the tissue stops on custom tray
3x3 mm
how many tissue stops should be placed on custom tray
3 - tripoded on non-functional cusps and incisal edgess
where to place tissue stops on custom tray
non functional cusps and incisal edgess
when creating a custom tray, should you squish the wax real flat?
NO! you’ll use the 3 mm thickness
what should you place on pink wax to help with custom tray relief once the material is cured?
small amount of vaseline
how should you cut the Triad material to aid with forming the tray?
down the middle creating a horseshoe shape
what should you do to custom tray to prevent material from flowing out the back of the tray? what does this do?
create an extension that covers the distal aspect of the last tooth. this allows for capture of distal margin of posterior preparations
how should you form handle when making cutom tray for mandibular arch
straight up and a little out
how many times will you bake the tray? what happens at each bake?
2x2 minute bakes
1st 2 minutes: just place it in with model and pink wax
2nd 2 minutes: remove model and pink wax and just place the custom tray in
what should you do after baking the custom tray?
feel with fingers to remove rough spots and finish the rough edges!
why do we have to smooth out the custom tray
it can hurt the patient (cutting etc.)
T/F: if you wouldn’t place in your mouth, do not place in patient’s mouth
TRUE
what does VLC stand for?
visibly light cured??
what should the inside of the tray be painted with for the impression material to be used?
uniform coat of adhesive
