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DA 140

Chapter 35 Impression Material (power point)

TermDefinition
Full Arch Custom made, preformed plastic, perforated rim lock. Maxillary and Mandibular
Quadrant Custom made, preformed plastic, perforated rim lock
Triple Tray Quadrant, sextant, upper/lower done in one
Sextant tray Custom made, preformed plastic, perforated rim lock. Anterior/posterior
What does the articulator do.... Recreates the TMJ
Elastomeric Materials Rubber like, used for precise duplication, no distortion and great dimensional stability; multi-body types Polysulfide, Polyether, Silicone (polysiloxane, polyvinysiloxane)
Polysulfide Light, medium/regular and heavy. Used on crowns, bridges, partial, and denture impressions. Stains, tastes bad and stinks. 10 min setting time
Polyether Medium body only; Used on crowns, bridges, partial, and denture impressions. Cant use around prep tooth.
Polysiloxane Putty, used for bite registration & custom trays
Polyvinysiloxane High degree of accuracy & dimensional stability. Expensive
What is sent to the lab.... Lab slip, final impression, opposing arch & bite registration (also tooth # and shade)
When is adhesive applied... used on smooth custom trays; makes impression material stick to the trays rather the mouth
Created by: cadengel