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How to take impression in special tray
Автор: Dental Education world
Загружено: 2020-08-02
Просмотров: 4798
Описание:
It should be well adapted to the primary cast.
It should be dimensionally stable on the cast and in the mouth.
The tissue surface should be free of voids or projections.
It should be at least 2 mm thick in the palatal area and lingual flange for adequate rigidity.
It should be rigid even in thin sections.
It should not bind to the cast.
It should be easy to remove.
It should not react with the impression material.
It should have a contrasting colour to make its margins appear prominent when placed in the patient’s mouth.
It should have 2 mm relief near the sulcus so that green stick compound can be used to do border moulding.
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