RPD LECTURE 6 Flashcards
are tori usually unilateral or bilateral?
usually BILATERAL
should you keep or remove mandibular tori?
remove the mandibular tori
do you see more maxillary or mandibular exostoses?
maxillary
facial surface
when should you remove MX/MN exostoses?
if they are in critical BASE areas of the PRDP saddle extensions.
what can you do if you chose not to do surgery for exostoses?
may require partially flangeless PRDP base
what is the best way to evaluate for most pre prosthetic surgery?
diagnostic casts and a surveyor as you design the PRDP
what kind of material do you predominately use for frameworks?
mostly
what are advantages of CO NI CR alloys?
higher strength, fatigue resistance, lighter weight, and lower cost.
do we use titanium for dentures and RPD?
not really
usually just for dental implants
what are advantages of CP titanium?
low weight to volume
high strength to weight
high fatigue
high corrosion resistance
basically everything the others have*
what is the composition of CO-CR alloy?
30% CR, 60% co
CO CR
what is the significance of the density of the material?
low density means that you will have more casting force required.
why does titanium need more casting force?
because it has low density. it needs more casting forces
what would be an indication for using a low density metal?
a large maxillary framework will have improved retention if the weight of the framework can be reduced.
WHAT MATERIALS have the highest yield strength?
base metals
