REM PROS impressions Flashcards
what is the main aim of primary impressions?
to accurately record clinically relevant landmarks of the edentulous mouth without excessive tissue distortion
what is the aim of working impressions?
record the entire functional denture bearing area to ensure maximum support, retention and stability for the denture during use
why is it crucial to include full extension of lower denture bearing area in your impression?
to spread the load
for dentures, what is the main use of primary impressions?
construction of special trays
where must a special tray be relieved?
around frenal attachments
when may you use a selective impression technique?
if fibrous (flabby) ridge
what is the aim of a selective impression technique for a fibrous ridge?
to record the area without displacing the tissues
if a fibrous ridge is present but not severe, what impression technique can be used?
a single stage impression with perforated tray and low viscosity material
if a fibrous ridge is present and severe, what impression technique can be used?
2 stage impression
1. mucocompressive imp of the non-compressible tissues
2. mucostatic imp of the fibrous areas
what material can be use to take a mucocompressive impression?
putty elastomers
what material can be used to take a mucostatic impression?
light body elastomer
where do you stand when taking a lower impression?
in front of the patient
where do you stand when taking an upper impression?
behind the patient
