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This Concept Map, created with IHMC CmapTools, has information related to: Impression, ELASTOMER ???? Polysulfide and condensation silicones should be poured between 20 minutes and 1 hour., PREPARATION where there is Tray selection, nearly parallel to the long axis of the teeth because hydrocolloids exhibit greater tear strength when stressed rapidly, PREPARATION where there is Mixing, AQUEOUS may be IRREVERSIBLE HYDROCOLLOID, NON-ELASTIC either ZOE IMPRESSION PASTE, REMOVAL remove impression with a definite snap, stress which may later relax and cause distortion, SILICONE ???? ????, No teasing or wiggling the set impression from the mouth because it causes excessive distortion from viscous flow, RELAXATION ???? Saliva or blood that has adhered can be removed by sprinkling dry stone material on the moist surface, allowing it to set for about 1 minute and then rinsing and shaking it dry., double mix tecnnique produce better accuracy results, a definite snap in a direction nearly parallel to the long axis of the teeth, double mix tecnnique if there is sufficiently long setting time, RELAXATION ???? To achieve maximum strength and surface detail, the poured impression should be covered with wet paper and stored in a humidor for 1 hour., Tray selection ???? Custom Resin Tray, Preparation ???? thickness, NON-AQUEOUS may be SILICONE, GELATION No teasing or wiggling the set impression from the mouth, GELATION tray should be removed quickly 2-3 minutes after gelation.