Framework Try in Flashcards
T/F: A short time between the impression and framework try-in is desirable
True
The completed RPD must be ______
Passive
The lab returns the framework on the ____ cast
Duplicate cast
The wax up of the RPD framework is completed on the ____ cast
Refractory cast
is the internal or external surface of the framework polished?
External
What are the 3 things that need to be contacting when trying in metal framework?
Rests
Clasp Tips
Tissue stops
A more rigid tip on one abutment than another will cause _______
Tilting
____ are points where the acrylic meets the metal framework
-less than 90 degrees
External finish lines
Lack of uniform thickness of impression material
Intraoral distortion due to tray movement
Extraoral distortion due to faculty handling
Faulty impression
Improper water to powder ratio
Improper spatulation
Failure to use double pour cast formation technique when making impressions in irreversible hydrocolloid
Faulty casts
Excessive time lapse from impression to framework try in appt
-Can be due to occlusal disharmonies/periodontally involved teeth
-Mesially inclined mand molars
-Lone standing premolars
Recent extractions
Tooth mvmnt
What are the 4 common areas of framework interference?
Internal surfaces of direct retainer shoulders
Internal surfaces of direct retainer bodies
Internal surfaces of minor connectors
Interdental papilla areas
What are the 3 disclosing materials to identify interferences?
NEY spray
KERR disclosing wax
Occlude
What can you adjust areas of interference with on framework?
Small bur or stone
What is the last thing you do during framework try in?
Adjust occlusion
