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July 2008 | Courtesy of BEGO USA
Duplication at its Best
When looking to duplicate a die, full arch, or upper or lower model — silicone duplicating materials offer many advantages:
- The highest level of accuracy and definition
- Time saving efficiencies
- Multiple case duplication
- The option of delayed duplication, even months later
Silicone is ideal for all combination and implant cases. The time-saving, duplicating accuracy far outweighs the higher costs associated with its use. Here are several helpful hints to keep in mind when using silicone duplication materials:
- Always mix/stir the base and catalyst thoroughly before using.
- Be aware that disinfectant residue on your models could affect the proper setting of the silicone. Cleaning models with mild soap and water generally eliminates this problem.
- Curing the silicone in a pressure vessel will enhance the degree of detail. Remember to leave the silicone in the pressure vessel for the full set time. Always put your second pour or duplication back into the pressure vessel for curing. This will also ensure fit and eliminate distortion.
- After removing your master model from the silicone mould, allow the silicone mould to bench set for a least 45 minutes before doing your next pour. This will allow the silicone mould to return to its natural position and helps eliminate distortion and remakes.
- If using a debubblizer always dry the silicone surface completely.
- Always read the manufactures working instructions completely for greater success.
Silicone duplicating materials are a great tool to take your work to the next level.
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The bubble-free, ultra-precise gypsum surface (show right) was duplicated in silicone and cured in a pressure vessel set at 55 PSI. The other (left) was conventionally bench-set.
Wiropress SL
Reduce the size and frequency of voids and bubbles in finished castings, acrylic resins, investments, and duplicating materials. #25926
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