REM PROS try in and insertion Flashcards
what should you tell your patient at try in stage in regards to the fit?
it is in wax so will feel bulky
the clasps wont engage so will feel loose
the colour of the wax is more pink than the acrylic
why must you work quickly at the try in stage/ not leave the denture in the mouth for too long?
the heat of the patients mouth may soften the wax which can distort it/ teeth may fall out
if a cocr framework doesnt look like its fitting, what may you do to properly assess?
remove the wax and teeth to assess
what happens if the cocr framework doesnt fit at try in?
new impressions need taken for a re try
what are the try-in checks?
lip support
incisal level
occlusal planes - anterior/ posterior
retention and stability
position of teeth compared with the ridge
base extensions
vertical dimension
even contact on occlusion when in RCP
speech
aesthetics
what are the reference lines for occlusal plane?
interpupillary and alatragal
at try in what are we checking with vertical dimension?
if index teeth are meeting
if no index teeth - is the FWS adequate
what do you do if there is an error with tooth shade/ size/ mould?
prescribe for a change
what do you do if there is an issue with extensions at try in?
underextended - review cast, if it is extended fully then draw on it where you want the extension, if the cast is not extended you need a new imp and re try
overextended - trim the wax chairside
what do you do if there is an issue with adaptation chairside?
if the adaptation is poor in the mouth but well to the cast, there is a fault in the casting/ impression - take a new imp for recast and new waxing for re try
what do you do if there is an error in chrome framework at try in?
new impressions and new casting
There is an error with occlusion at try in. The FWS is correct however teeth on one side arent meeting. How do you resolve this?
Add wax to the teeth and re record the occlusion
send to lab to rearticulate and re set the teeth at the new occlusion
There is an error with occlusion at try in stage. The FWS is inadequate and the occluding teeth are propping the bite open. How do you resolve this?
Remove occluding teeth that are holding the vertical dimension
Add wax to create a record block
establish the correct OVD
re record the occlusion
send to lab for teeth to be re set and a re try
for complete upper or large upper partial dentures what must be prescribed for at the try in appt?
a post dam - its depth and location
what are the different types of acrylic?
heat cure
cold cure
high impact
what are the insertion checks?
comfort
retention and stability - do the clasps engage?
base extensions
appearance
speech
occlusion even? - use articulating paper
vertical dimensions
how may you notice that a denture is overextended?
tissues may blanch
denture will dislodge when cheeks are moved
what can you do at the insertion stage if there are premature contact between some teeth?
use acrylic bur to adjust
