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 | Beauty-Cast Gypsum Investment | Cristobalite Investment Material | PC 15 Phosphate Bonded Investment | PowerCast 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 | The proven standard for the Hygroscopic Technique. Also excellent for the High Heat Technique. | The principal ingredient, CRISTOBALITE, gives high thermal expansion, even at comparatively low temperatures. It is possible to use the same creamy | PC15 is a fine grained phosphate bonded investment for pressable ceramics. Its creamy consistency pours easily when investing and produces smooth | A carbon-free, fine-grain phosphate bonded investment for casting crown and bridge and ceramic alloys. This versatile all-purpose investment has been |
| Quantity | 24 - 60 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle | 144 - 75 g Package
144 - 50 g Package
24 - 50 g Package
11 kg (25 pounds) Carton | 144 - 50 g Package | 25 - 100 g Package
100 - 100 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle | 9 kg (20 pounds) Carton
150 - 60 g Package
100 - 90 g Package
6 Pack - 340 mL Bottles
6 Pack - 1L Bottles
340 mL Bottle
1 L Bottle |
| Compressive Strength | Wet - 6,000 psi (42 MPa)
Dry - 6,500 psi (48 MPa) | Wet - 700 psi (5 MPa) | Wet - 700 psi (5 MPa) | Wet - 500 psi (3.4 MPa) | Wet - 700 psi (5 MPa) |
| Working Time | 2 minutes | 3 minutes | 3 minutes | 7 - 9 minutes | 8 - 9 minutes |
| Set Time | Not Available | 14.5 minutes | 16 minutes | Not Available | Not Available |
| Material Type | Refractory Die Material | Gypsum Casting Investment | Gypsum Bonded Investment | Fine Grain Phosphate Bonded Investment | Carbon-free, Fine-grain Phosphate-bonded Investment |
| Indication For Use | Refractory Investment - Direct Firing Ceramics | Low Fusing Crown and Bridge Alloys | Low Fusing Crown and Bridge Alloys | Pressable Ceramics | Casting Crown and Bridge and Ceramic Alloys |
| Liquid / Powder Ratio | 22 mL / 100 g | 30 mL/100 g | 30 mL / 100 g | 27 mL / 100 g | 23 mL / 100 g |
| Setting Expansion | 0.8 % | 0.4 % | 0.5 % | 1 % | 0.8 % |
| Ready For Burnout | Not Available | 30 minutes | 30 minutes | 15 minutes | 45 minutes |
| Hygroscopic Expansion | N / A | 1.5 % | Not Available | N / A | N / A |
| Thermal Expansion | 500° C, 2nd firing - 0.65% | 480º C (900º F) - 0.55%
650º C (1,200º F) - 1.20% | 650º C (1,200º F) - 1.25 % | 0.7 % | 1 % |
| Metal or Ringless Technique | N / A | Metal Only | Metal Only | Metal or Ringless | Metal or Ringless |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |