BEGO USA eTechTips and Special Offers
  February 2009 | Courtesy of BEGO USA

  
 
Duplicating Under Pressure with Hydrocolloid is Better!

Curing your duplicate model in hydrocolloid under pressure can give you the following positive effects:
  • Denser duplicate refractory or gypsum models
  • Reproduce higher definition in your duplicate models for greater detail
  • Smoother surfaces
Start processing the duplicating material as normal. Once the setting time of the duplicating material is reached, remove the master model from the hydrocolloid. Pour the refractory duplicate model and immediately place under pressure. A setting of up to 30 PSI in your pressure vessel will give you optimum results. Important — do not release the pressure before your material has hardened and do not exceed 30 PSI!

In the partial denture technique, it is also advisable to pressurize your second pour of refractory investment when making the mould. A pressure setting of 55 PSI is effective in getting smooth, bubble free metal frameworks that require less finishing time. Producing smoother frameworks with less finishing time is the aim of this tech tip. 		 
Wirovest refractory material being poured into the hydrocolloid mould made with Wirogel M.


Place duplicated refractory model into the Wiropress SL pressure vessel, under 30psi of pressure.

  
 

BEGO USA
For more information, call your local dealer or BEGO USA, 1.800.342.2346, www.begousa.com