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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 |