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| January 2011 | Courtesy of BEGO USA There's something for everyone under pressure |
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A pressure vessel is becoming the most wanted piece of laboratory equipment. The key is making sure every department takes full advantage of the vessel's benefits. When used effectively, technicians not only get less bubbles but it can also assist in difficult implant castings. Just remember a few helpful tips to take the pressure off.
Cold cure acrylic: Fill a small plastic container with warm water (+/- 50°C / 122°F) and place acrylic into the container. Place the container under 50-55psi of pressure for 15-20 minutes. This technique creates a denser cure and better color stability over the long term. Investing a post: Reduce the pressure to 25-30psi to avoid pushing investment into voids or air pockets. After investing, place ring immediately in the pressure vessel. RPD duplication: After removing the master model from the hydrocolloid, reduce the pressure in the pressure vessel to a maximum of 25psi. After mixing the investment, pour it into the duplicate mould and place it immediately in the pressure vessel for 25 minutes. This technique helps create a denser model, resulting in less finishing on the framework. *when using silicone adjust pressure to 50psi* |
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| 2nd Pour for RPD: Invest the second pour without vibration or debubblizer. Set the pressure vessel to 50-55psi - place mold immediately inside the pressure vessel and the pressure alone will take care of capturing all the critical areas.
C&B investing: In order to ensure a bubble free investment ring - immediately after pouring investment into the ring, place the ring under 50-55psi of pressure while in a liquid state. Important technical tip for all procedures - Do not open the door to add additional rings. BEGO hopes these tips save time and energy in all your laboratory departments. |
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 For more information, call your local dealer or BEGO USA, 1.800.342.2346 | www.begousa.com | |
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