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Genie flows better under
pressure than the leading brands
The single most important characteristic of your impression material ...is its ability to flow under pressure around and in between the teeth and below the prepared margins into the sulcus. The better the flow, the more accurately you’ll capture detail—creating impressions you and your lab will love.
And since flow is so important, a leading university
set out to answer a simple question:
Of the leading brands of impression material, which has the best flow? Depending on what brand you’re using, the answer may surprise you.
The study relied on the shark fin test...
a method that determines an impression material’s ability to flow under pressure and how it will respond in a clinically relevant manner
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An Accurate, methodical study
All the impression materials were conditioned at ambient room temperature for 24 hours. Ten milliliters of each material were syringed into a receptacle, avoiding air entrapment. The shark fin mold was dropped onto the receptacle after one minute, with a weight placed on top of it to simulate pressure.
Ten minutes later, the mold was separated and the set impression of the shark fin was removed and measured, using a caliper accurate to 0.01 milliliters.The researchers determined the average fin height value for each impression material,and used a one-way ANOVA to establish significance between the groups.
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How does the shark fin test work?
In this test, a mold is inserted into impression material, and a weight isplaced on top of it, to simulate pressure. The material hardens inside the mold, creating a shape similar to a shark’s fin. The mold is then removed, and the fin’s height is measured. The higher the fin, the better the impression material’s flow under pressure
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