D3 CLINICAL PROS FINAL EXAM 2024 QUESTIONS WITH
COMPLETE VERIFIED ANSWERS UPDATED GRADED A++
when are custom trays needed?
mainly for removable pros for good impression
why are custom trays not used much any more for fixed pros?
too bulky, stock trays work just as well
how should a bridge/crown custom tray be designed?
displace cheek and tongue, extend 4-6 mm beyond prep margin in order to push light
body into margin
same parameters for stock trays
how should edentulous custom trays be designed?
proper extensions to record all anatomy, should be 2-3 mm short of vestibule for proper
border bolding
if you put a layer of pink baseplate wax down when making custom tray, when
should it be removed?
AFTER you are done border molding (tray will be unstable in pt's mouth if removed
before)
what is PIP used for mainly?
mainly for checking edentulous areas/ tissues
dr. larson doesn't like using it bc its really messy and doesn't work well
what is disclosing wax used for?
RPD framework (most commonly, cast dowel and core, crown
what is a consideration of using Occlude disclosing wax?
it will build up and you will have to clean it off each time
, for implants, when you want a nice emergence profile, how long do you want the
platform to be below the CEJ of the adjacent tooth?
2-4 mm
what will happen if the platform is placed greater than 4 mm below the CEJ of the
adjacent tooth?
bleeding - implant will be more difficult to restore
what is platform switching?
connection between implant and abutment (reduces some bone loss but not all)
how much bone loss does microgap cause? in what direction? why?
1.5 mm throughout first year; both horizontal and vertical bone loss; bc of bacteria
trapped there
how far apart should 2 adjacent implants be place?
3 mm
how far apart should an implant and a natural tooth be?
1.5 mm
what is a common cause of open proximal contacts of implant crowns?
mesial drift of natural teeth - implants do not drift with natural teeth and can cause open
contact
why do we have an increased risk of porcelain crown fracturing with implants vs
natural teeth? how can you minimize this risk?
no PDL for implants, makes them 4x more likely to fracture porcelain
need to make sure it doesn't;t contact as early as natural teeth - should have LIGHT
contacts that drag shimstock
why are custom abutments preferred over stock abutments?
helps with esthetics/ emergence profile, control of margin location, greater ease of use,
keep cost down
what do implant threads help with?
initial stabilization
what are considerations of immediate temporization of implant?
COMPLETE VERIFIED ANSWERS UPDATED GRADED A++
when are custom trays needed?
mainly for removable pros for good impression
why are custom trays not used much any more for fixed pros?
too bulky, stock trays work just as well
how should a bridge/crown custom tray be designed?
displace cheek and tongue, extend 4-6 mm beyond prep margin in order to push light
body into margin
same parameters for stock trays
how should edentulous custom trays be designed?
proper extensions to record all anatomy, should be 2-3 mm short of vestibule for proper
border bolding
if you put a layer of pink baseplate wax down when making custom tray, when
should it be removed?
AFTER you are done border molding (tray will be unstable in pt's mouth if removed
before)
what is PIP used for mainly?
mainly for checking edentulous areas/ tissues
dr. larson doesn't like using it bc its really messy and doesn't work well
what is disclosing wax used for?
RPD framework (most commonly, cast dowel and core, crown
what is a consideration of using Occlude disclosing wax?
it will build up and you will have to clean it off each time
, for implants, when you want a nice emergence profile, how long do you want the
platform to be below the CEJ of the adjacent tooth?
2-4 mm
what will happen if the platform is placed greater than 4 mm below the CEJ of the
adjacent tooth?
bleeding - implant will be more difficult to restore
what is platform switching?
connection between implant and abutment (reduces some bone loss but not all)
how much bone loss does microgap cause? in what direction? why?
1.5 mm throughout first year; both horizontal and vertical bone loss; bc of bacteria
trapped there
how far apart should 2 adjacent implants be place?
3 mm
how far apart should an implant and a natural tooth be?
1.5 mm
what is a common cause of open proximal contacts of implant crowns?
mesial drift of natural teeth - implants do not drift with natural teeth and can cause open
contact
why do we have an increased risk of porcelain crown fracturing with implants vs
natural teeth? how can you minimize this risk?
no PDL for implants, makes them 4x more likely to fracture porcelain
need to make sure it doesn't;t contact as early as natural teeth - should have LIGHT
contacts that drag shimstock
why are custom abutments preferred over stock abutments?
helps with esthetics/ emergence profile, control of margin location, greater ease of use,
keep cost down
what do implant threads help with?
initial stabilization
what are considerations of immediate temporization of implant?
