Before revision: Advantages: Easy flow Cheap Reproduction of adequate detail Fast setting time Minimal tissue displacement in the mouth Disadvantages: It has poor dimensional stability Poor tear strength If it is unsupported, it distorts Easy to include air during mixing A minimum thickness of 3 mm is required which is hard to achieve in thin areas in between the teeth To buy best quality impression material you can contact given below link Adentalls.com Non-aqueous elastomeric impression materials As stated above, there are times clinically where the accuracy of an alginate impression is not acceptable, particularly for the construction of fixed prosthodontics.
After revision: Advantages: Easy flow Cheap Reproduction of adequate detail Fast setting time Minimal tissue displacement in the mouth Disadvantages: It has poor dimensional stability Poor tear strength If it is unsupported, it distorts Easy to include air during mixing A minimum thickness of 3 mm is required which is hard to achieve in thin areas in between the teeth To buy best quality impression material you can get online dental material companies like Al-Falah Dental Supply Non-aqueous elastomeric impression materials As stated above, there are times clinically where the accuracy of an alginate impression is not acceptable, particularly for the construction of fixed prosthodontics.