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This Concept Map, created with IHMC CmapTools, has information related to: MIKEE re-input, Selection of Impression Tray if patient has high palatal vault, for water to rise to the highest point resulting in faulty, very soft cusps on the model, Cast Fabrication stone should be allowed to set in trays with the teeth down, ELASTIC may be AQUEOUS, double mix tecnnique produce better accuracy results, teeth are missing in one posterior quadrant then modeling compound is softened in a water bath and placed in the tray, Tray selection ???? Custom Resin Tray, stiff material thus undercuts must be blocked out., exact location if entrapped in tissue space, RELAXATION ???? pouring should be completed within 15 minutes after the impression is removed from the mouth., removed immediately after adequate set otherwise the model would have “moth-eaten” appearance, REVERSIBLE HYDROCOLLOID advantages long working time, IRREVERSIBLE HYDROCOLLOID Advantages low cost, Custom Resin Tray must be Rigid, Impression Taking pressure should be released when tray is seated, less stiff than polyethers, REVERSIBLE HYDROCOLLOID advantages no custom tray required, Preparing the Mouth teeth should not be left to dry completely, alginate adhesives can be used because it overcomes displacing forces during withdrawal of the impression, REMOVAL remove impression with sudden jerking motion