WARNING:
JavaScript is turned OFF. None of the links on this concept map will
work until it is reactivated.
If you need help turning JavaScript On, click here.
This Concept Map, created with IHMC CmapTools, has information related to: Impression 2, REVERSIBLE HYDROCOLLOIDS Advantages low material cost, if the tray is left on a firm surface with unsupported material, the impression would distort as the weight of the impression acts directly on the unsupported material, Selection of Impression Tray should be perforated, REVERSIBLE HYDROCOLLOIDS Advantages no custom tray required, POLYSULFIDE POLYMER Disadvantages unpleasant odor, relatively easier to pour easier removal from undercut, double mix tecnnique if there is sufficiently long setting time, special conditioning unit consisting of three thermostatically controlled water baths, Model duplication of Bridges, if tray is turned upside down onto stone there is a tendency for water to rise to the highest point, Mixing and Loading mixing should be rapid with a wide bladed spatula, hydrophilic thus Impressions should not be stored in a humidor or moist environment., Criteria for Undistorted Impression ensure accuracy pour within 1 hour, Criteria for Undistorted Impression during Mixing and Loading, REVERSIBLE HYDROCOLLOIDS Disadvantages low stability, saliva and blood by rinsing with cold water, low stability results from syneresis and imbibition, excellent dimensional stability even when pouring is delayed for prolonged periods of time, REVERSIBLE HYDROCOLLOIDS Disadvantages equipment needed, REVERSIBLE HYDROCOLLOIDS Disadvantages low tear resistance