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 | Cristobalite Investment Material | Novocast Investment Material | PC 15 Phosphate Bonded Investment | PowerCast Phosphate Investment | X-20 Chrome Phosphate Investment |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | The principal ingredient, CRISTOBALITE, gives high thermal expansion, even at comparatively low temperatures. It is possible to use the same creamy | NOVOCAST is an advanced inlay investment that provides increased accuracy for casting conventional gold alloys at a mold temperature of 650 degrees C | 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 | A vastly improved casting investment for making chrome partial denture frameworks. For casting any chrome partial alloy. Refractory Cast is hard, |
| Quantity | 144 - 50 g Package | 9 kg (20 pounds) Carton
24 - 50 g Package
24 - 75 g Package
144 - 50 g Package
144 - 75 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 | 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 |
| Compressive Strength | Wet - 700 psi (5 MPa) | Wet - 950 psi (7 MPa) | Wet - 500 psi (3.4 MPa) | Wet - 700 psi (5 MPa) | Wet - 2,500 psi (17 MPa) |
| Working Time | 3 minutes | 3 minutes | 7 - 9 minutes | 8 - 9 minutes | 4 - 5 minutes |
| Set Time | 16 minutes | 15 minutes | Not Available | Not Available | Not Available |
| Material Type | Gypsum Bonded Investment | Gypsum Bonded Investment | Fine Grain Phosphate Bonded Investment | Carbon-free, Fine-grain Phosphate-bonded Investment | Phosphate Bonded |
| Indication For Use | Low Fusing Crown and Bridge Alloys | Low Fusing Crown and Bridge Alloys | Pressable Ceramics | Casting Crown and Bridge and Ceramic Alloys | Casting Partials with Chromium Dental Alloys |
| Liquid / Powder Ratio | 30 mL / 100 g | 34 mL / 100 g | 27 mL / 100 g | 23 mL / 100 g | 11 mL / 100 g |
| Setting Expansion | 0.5 % | 0.45 % | 1 % | 0.8 % | 0.2 % |
| Ready For Burnout | 30 minutes | 30 minutes | 15 minutes | 45 minutes | 30 - 60 minutes |
| Hygroscopic Expansion | Not Available | N / A | N / A | N / A | N / A |
| Thermal Expansion | 650º C (1,200º F) - 1.25 % | 650° C - 1.20 % | 0.7 % | 1 % | 700 -- 1,000° C (1,300 -- 1,800° F) - 0.90 % |
| Metal or Ringless Technique | Metal Only | Metal Only | Metal or Ringless | Metal or Ringless | Metal or Ringless |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |