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 | Cristobalite Investment Material | Formula 1 Universal Investment | ResinVest |
| 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 | The principal ingredient, CRISTOBALITE, gives high thermal expansion, even at comparatively low temperatures. It is possible to use the same creamy | This high-performance, universal investment works equally well for all alloys and pressable ceramics. Its wide expansion range allows the technician | Designed for burning out printed or milled resin patterns for crowns, bridges, or frameworks, ResinVest is a fiber-reinforced material that resists |
| 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 - 50 g Package | 4 - 2.5 kg Package
100 - 100 g Package
150 - 60 g Package
50 - 100 g Package
50 - 60 g Package
40 - 150 g Package
340 mL Bottle
1 L Bottle
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles | 100 g Package; 55 lbs. Carton |
| Compressive Strength | Wet - 6,000 psi (42 MPa)
Dry - 6,500 psi (48 MPa) | Wet - 600 psi (4 MPa) | Wet - 700 psi (5 MPa) | Wet - 1.350 psi (9.2 MPa) | 1,350 psi (9.2 MPa) |
| Working Time | 2 minutes | 8 - 10 minutes | 3 minutes | 6 - 8 minutes | 6 to 8 Minutes |
| Set Time | Not Available | Not Available | 16 minutes | Not Available | 30 Minutes Minimum |
| Material Type | Refractory Die Material | Carbon-free Phosphate Bonded Investment | Gypsum Bonded Investment | Phosphate Bonded Investment | Phosphate Investment |
| Indication For Use | Refractory Investment - Direct Firing Ceramics | High Fusing Alloys | Low Fusing Crown and Bridge Alloys | Universal Investment for All Alloys and Pressable Ceramics | Burning out milled or printed resin patterns |
| Liquid / Powder Ratio | 22 mL / 100 g | 24 mL / 100 g | 30 mL / 100 g | 22 mL / 100 g | 22 ml/100 g |
| Setting Expansion | 0.8 % | 0.25 % | 0.5 % | 1.6 % | 1.6 Percent |
| Ready For Burnout | Not Available | 90 minutes | 30 minutes | 15 minutes | Yes |
| Hygroscopic Expansion | N / A | N / A | Not Available | N / A | Not Available |
| Thermal Expansion | 500° C, 2nd firing - 0.65% | 1.3 % | 650º C (1,200º F) - 1.25 % | 0.65 % | 0.65 Percent |
| Metal or Ringless Technique | N / A | Metal or Ringless | Metal Only | Metal or Ringless | Both |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |