![]() Wrap impression in a wet paper towel until you can pour it up.You should have a lip roll and all of the teeth and no bubbles in the impression.To remove tray pull out the cheeks to break seal, protect the opposing teeth, snap it out rolling it out the same as you put it in one side then the other.Roll it in the mouth one side then the other, seat in a even motion pulling lips out around the tray, once seated, ask patient to lift their tongue, hold tray with your fingers until material is set. Take the impression from in front of the patient.Should be the same height as the patients shoulders. It is recommended to wipe alginate on occlusal surfaces before seating tray to help prevent occurrence of trapping bubbles in impression.įor taking lower impressions the operator’s position should be at 8 to 9 o’clock, your elbow.Set time is three minutes from start of mix.Collect alginate from sides of bowl with spatula and place the impression material evenly in the tray.At this point, the mix should be a smooth, creamy consistency that does not fall off spatula. If hand-mixing, rapidly mix alginate with a spatula, pressing the mixture against the side of the bowl.Use cooler water to allow more working time. The higher the water temperature the faster the impression material will set up.Measure the matching amount of water with cup provided. Two scoops are generally used for full arch impressions.Fill scoop with powder, tap side with spatula then level off do not pack powder to tightly in scoop you will have to much powder to water ratio for mix.The number of recommended scoops depends on the procedure and size of the tray. ![]() This method is how we learned is school However it is not very practical when setting up for procedures ahead of time. ![]() Pour measured amount of water into a clean mixing bowl and then add powder.
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