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 | PowerCast Phosphate Investment | Cera-Fina Carbon-Free Fine Grained Investment | Ceramigold Investment with Carbon | Cristobalite Investment Material | ResinVest |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | A carbon-free, fine-grain phosphate bonded investment for casting crown and bridge and ceramic alloys. This versatile all-purpose investment has been | CERA-FINA is a carbon-free phosphate investment developed for professionals who demand a more finely grained investment. It is designed for use with | This phosphate investment contains carbon for bright, gold-colored castings. Expansion can be controlled to fit your needs -- yet technic is easy to | The principal ingredient, CRISTOBALITE, gives high thermal expansion, even at comparatively low temperatures. It is possible to use the same creamy | Designed for burning out printed or milled resin patterns for crowns, bridges, or frameworks, ResinVest is a fiber-reinforced material that resists |
| Quantity | 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 | 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 | 144 - 50 g Package | 100 g Package; 55 lbs. Carton |
| Compressive Strength | Wet - 700 psi (5 MPa) | Wet - 600 psi (4 MPa) | Wet - 1,500 psi (10 MPa) | Wet - 700 psi (5 MPa) | 1,350 psi (9.2 MPa) |
| Working Time | 8 - 9 minutes | 8 - 10 minutes | 6 - 7 minutes | 3 minutes | 6 to 8 Minutes |
| Set Time | Not Available | Not Available | Not Available | 16 minutes | 30 Minutes Minimum |
| Material Type | Carbon-free, Fine-grain Phosphate-bonded Investment | Carbon-free Phosphate Bonded Investment | Phosphate Bonded Investment | Gypsum Bonded Investment | Phosphate Investment |
| Indication For Use | Casting Crown and Bridge and Ceramic Alloys | High Fusing Alloys | Crown and Bridge and Ceramic Gold Alloys | Low Fusing Crown and Bridge Alloys | Burning out milled or printed resin patterns |
| Liquid / Powder Ratio | 23 mL / 100 g | 24 mL / 100 g | 16 mL /100 g | 30 mL / 100 g | 22 ml/100 g |
| Setting Expansion | 0.8 % | 0.25 % | 0.7 % | 0.5 % | 1.6 Percent |
| Ready For Burnout | 45 minutes | 90 minutes | 60 minutes | 30 minutes | Yes |
| Hygroscopic Expansion | N / A | N / A | N / A | Not Available | Not Available |
| Thermal Expansion | 1 % | 1.3 % | 1.2 % | 650º C (1,200º F) - 1.25 % | 0.65 Percent |
| Metal or Ringless Technique | Metal or Ringless | Metal or Ringless | Metal or Ringless | Metal Only | Both |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |