Dental investment materials are used to encase the wax designed for the lost wax casting technique. These materials are usually available as a powder that is mixed with water and then used to encase the wax design. These materials solidify and can withstand the heat of the casting furnace to hold the precise shape left behind when the wax is burned out. Different gypsums are designed for use with different dental alloys or other materials, so be sure to select the proper gypsum for the case at hand.
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| Company | Whip Mix Corporation | Whip Mix Corporation | Whip Mix Corporation | Whip Mix Corporation | Whip Mix Corporation |
| Item | Polyvest Refractory Die Material | Cera-Fina Carbon-Free Fine Grained Investment | Hi Temp Carbon-Free Investment | Soldering Investment | X-20 Chrome Phosphate Investment |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | POLYVEST Refractory Die Material is formulated with a coefficient of thermal expansion to closely match today's newer porcelains. With its controlled | CERA-FINA is a carbon-free phosphate investment developed for professionals who demand a more finely grained investment. It is designed for use with | A special investment for non-precious and semi-precious alloys. HI-TEMP contains no carbon. Non-precious metal alloys require an investment specially | Multi-purpose SOLDERING INVESTMENT isideal for soldering all types of dental alloys, including chrome-cobalt. Its fine texture mixes readily with | A vastly improved casting investment for making chrome partial denture frameworks. For casting any chrome partial alloy. Refractory Cast is hard, |
| Quantity | 24 - 60 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle | 9 kg (20 pounds) Carton
24 - 90 g Package
144 - 60 g Package
144 - 90 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle | 144 - 90 g Package
144 - 60 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle | 2 kg (4.5 pounds) Package
11 kg (25 pounds) Carton | 22 kg (50 pounds) Carton
50 - 400 g Packages
25 kg (55 pounds) Carton
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle |
| Compressive Strength | Wet - 6,000 psi (42 MPa)
Dry - 6,500 psi (48 MPa) | Wet - 600 psi (4 MPa) | Wet - 1,500 psi (10 MPa) | Wet - 1,200 psi (9 MPa) | Wet - 2,500 psi (17 MPa) |
| Working Time | 2 minutes | 8 - 10 minutes | 7 - 8 minutes | 2 - 3 minutes | 4 - 5 minutes |
| Set Time | Not Available | Not Available | Not Available | 15 minutes | Not Available |
| Material Type | Refractory Die Material | Carbon-free Phosphate Bonded Investment | Carbon-Free Phosphate Bonded | Gypsum Bonded Investment | Phosphate Bonded |
| Indication For Use | Refractory Investment - Direct Firing Ceramics | High Fusing Alloys | High Fusing Alloys | Low and High Fusing Precious Metals | Casting Partials with Chromium Dental Alloys |
| Liquid / Powder Ratio | 22 mL / 100 g | 24 mL / 100 g | 16 mL / 100 g | 24 mL / 100 g | 11 mL / 100 g |
| Setting Expansion | 0.8 % | 0.25 % | 0.7 % | 0.25 % | 0.2 % |
| Ready For Burnout | Not Available | 90 minutes | 60 minutes | 30 Minutes | 30 - 60 minutes |
| Hygroscopic Expansion | N / A | N / A | N / A | N / A | N / A |
| Thermal Expansion | 500° C, 2nd firing - 0.65% | 1.3 % | 1.2 % | 700° C (1,300° F) - 0.60 % | 700 -- 1,000° C (1,300 -- 1,800° F) - 0.90 % |
| Metal or Ringless Technique | N / A | Metal or Ringless | Metal or Ringless | N / A | Metal or Ringless |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |