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 | X-20 Chrome Phosphate Investment | Cristobalite Investment Material | Hi Temp Carbon-Free Investment | Novocast Investment Material | V.H.T. Refractory Investment |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | A vastly improved casting investment for making chrome partial denture frameworks. For casting any chrome partial alloy. Refractory Cast is hard, | 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 | NOVOCAST is an advanced inlay investment that provides increased accuracy for casting conventional gold alloys at a mold temperature of 650 degrees C | 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 | 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 | 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
24 - 50 g Package
24 - 75 g Package
144 - 50 g Package
144 - 75 g Package | 24 - 60 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle |
| Compressive Strength | Wet - 2,500 psi (17 MPa) | Wet - 700 psi (5 MPa) | Wet - 1,500 psi (10 MPa) | Wet - 950 psi (7 MPa) | Wet - 2,500 psi (17 MPa)
Dry - 4,800 psi (34 MPa) |
| Working Time | 4 - 5 minutes | 3 minutes | 7 - 8 minutes | 3 minutes | 4 - 5 minutes |
| Set Time | Not Available | 16 minutes | Not Available | 15 minutes | Not Available |
| Material Type | Phosphate Bonded | Gypsum Bonded Investment | Carbon-Free Phosphate Bonded | Gypsum Bonded Investment | Refractory Die Material |
| Indication For Use | Casting Partials with Chromium Dental Alloys | Low Fusing Crown and Bridge Alloys | High Fusing Alloys | Low Fusing Crown and Bridge Alloys | Direct Firing Ceramics |
| Liquid / Powder Ratio | 11 mL / 100 g | 30 mL / 100 g | 16 mL / 100 g | 34 mL / 100 g | 19 mL / 100 g |
| Setting Expansion | 0.2 % | 0.5 % | 0.7 % | 0.45 % | 0.3 % |
| Ready For Burnout | 30 - 60 minutes | 30 minutes | 60 minutes | 30 minutes | Not Available |
| Hygroscopic Expansion | N / A | Not Available | N / A | N / A | N / A |
| Thermal Expansion | 700 -- 1,000° C (1,300 -- 1,800° F) - 0.90 % | 650º C (1,200º F) - 1.25 % | 1.2 % | 650° C - 1.20 % | 500° C, 2nd Firing - 0.8 % |
| Metal or Ringless Technique | Metal or Ringless | Metal Only | Metal or Ringless | Metal Only | N / A |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |