Denture Try In Flashcards
what do you check before the patient arrives at try in stage
do you have the lab work
is correct patient
has lab work been damaged in transit
is lab work present what you expected from prescription
is mould and shade what you requested
what do you check before inserting the try in
are the try in bases stable on casts
are try in borders smooth, rounded and with no sharp edges
is border extension shaped to depth and width of the functional sulcus
what do you look at when the cast is on the articulator
is wax distorted or well adapted
check occlusion
good contacts?
pin on table?
overjet and overbite what we expected
what do you do if no post dam has been cut on the upper cast
draw on cast site with indelible pencil and ask technician to cut post dam
what is the try in checklist
retention and stability
base extensions
LIMBO
position of teeth compared with soft tissues
vertical dimension
even contact in occlusion
speech
aesthetics
what must you record in the records
patient consent to finish
what do you do if there is a speech problem
fix potential FWS problem
what is the problem if teeth make contact during speech
insufficient FWS
what is the problem if whistling sound is made during S sounds
OVD needs to be increased or anterior tooth position changed
what do you do if shade/mould is incorrect
choose again and prescribe to lab
what do you do if midline is incorrect
mark new midline and send to lab
what do you do if there are minor changes needed for tooth position
alter at chairside
what do you do if major changes are needed to tooth position
re-register and send to lab
what do you do if there is minor overextension
modify wax and mark on master cast the maximum extent of flange
what do you do if there is major overextension
go back to master impression stage
what do you do if there is minor underextension
wash impression in try in and send to lab for casting
or proceed to insertion stage but instead reline
what do you do if there is major underextension
go back to master impression stage
what do you do if the OVD is increased
remove teeth from one or both dentures and replace with wax rim
what do you do if OVD is decreased
wax rim can be added to the teeth on one or both dentures or teeth removed from one or both dentures and replaced with bigger wax rim
what is the first step to do when there is an occlusal error
check OVD and decide if correct or incorrect
what do you do if occlusal error but OVD correct
if uneven contact, some teeth removed from dentures and replaced with wax rim
what do you do if occlusal error and OVD incorrect
correct OVD by removing teeth from one or both dentures and replace with wax rim
what is the BULL rule
buccal upper lingual lower
adjust the contacting surfaces rather than the tips of cusps
