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 | Ceramigold Investment with Carbon | Cristobalite Investment Material | Hi Temp Carbon-Free Investment | PowerCast Phosphate Investment | V.H.T. Refractory Investment |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | 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 | A special investment for non-precious and semi-precious alloys. HI-TEMP contains no carbon. Non-precious metal alloys require an investment specially | A carbon-free, fine-grain phosphate bonded investment for casting crown and bridge and ceramic alloys. This versatile all-purpose investment has been | One of the most useful and efficient laboratory materials available today, V.H.T. is an extremely fine-grained phosphate investment with an ample |
| Quantity | 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 | 144 - 90 g Package
144 - 60 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 | 24 - 60 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle |
| Compressive Strength | Wet - 1,500 psi (10 MPa) | Wet - 700 psi (5 MPa) | Wet - 1,500 psi (10 MPa) | Wet - 700 psi (5 MPa) | Wet - 2,500 psi (17 MPa)
Dry - 4,800 psi (34 MPa) |
| Working Time | 6 - 7 minutes | 3 minutes | 7 - 8 minutes | 8 - 9 minutes | 4 - 5 minutes |
| Set Time | Not Available | 16 minutes | Not Available | Not Available | Not Available |
| Material Type | Phosphate Bonded Investment | Gypsum Bonded Investment | Carbon-Free Phosphate Bonded | Carbon-free, Fine-grain Phosphate-bonded Investment | Refractory Die Material |
| Indication For Use | Crown and Bridge and Ceramic Gold Alloys | Low Fusing Crown and Bridge Alloys | High Fusing Alloys | Casting Crown and Bridge and Ceramic Alloys | Direct Firing Ceramics |
| Liquid / Powder Ratio | 16 mL /100 g | 30 mL / 100 g | 16 mL / 100 g | 23 mL / 100 g | 19 mL / 100 g |
| Setting Expansion | 0.7 % | 0.5 % | 0.7 % | 0.8 % | 0.3 % |
| Ready For Burnout | 60 minutes | 30 minutes | 60 minutes | 45 minutes | Not Available |
| Hygroscopic Expansion | N / A | Not Available | N / A | N / A | N / A |
| Thermal Expansion | 1.2 % | 650º C (1,200º F) - 1.25 % | 1.2 % | 1 % | 500° C, 2nd Firing - 0.8 % |
| Metal or Ringless Technique | Metal or Ringless | Metal Only | Metal or Ringless | Metal or Ringless | N / A |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |