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DA 140
Chapter 35 Impression Material (power point)
Term | Definition |
---|---|
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 |