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 | PC 15 Phosphate Bonded Investment | FastFire 15 Phosphate Investment | Hi Temp Carbon-Free Investment | V.H.T. Refractory Investment | X-20 Chrome Phosphate Investment |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | PC15 is a fine grained phosphate bonded investment for pressable ceramics. Its creamy consistency pours easily when investing and produces smooth | FASTFIRE 15 is a fine grain phosphate investment which requires only a 15 minute benchset before placing molds into a hot oven for rapid burnout. It | A special investment for non-precious and semi-precious alloys. HI-TEMP contains no carbon. Non-precious metal alloys require an investment specially | One of the most useful and efficient laboratory materials available today, V.H.T. is an extremely fine-grained phosphate investment with an ample | A vastly improved casting investment for making chrome partial denture frameworks. For casting any chrome partial alloy. Refractory Cast is hard, |
| Quantity | 25 - 100 g Package
100 - 100 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle | 100 - 90 g Package
150 - 60 g Package
25 - 90 g Package
25 - 60 g Package
340 mL Bottle
1 L Bottle
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
9 kg (2 pounds) Carton | 144 - 90 g Package
144 - 60 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L 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 | 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 - 500 psi (3.4 MPa) | Wet - 500 psi (3.4 MPa) | Wet - 1,500 psi (10 MPa) | Wet - 2,500 psi (17 MPa)
Dry - 4,800 psi (34 MPa) | Wet - 2,500 psi (17 MPa) |
| Working Time | 7 - 9 minutes | 7 - 9 minutes | 7 - 8 minutes | 4 - 5 minutes | 4 - 5 minutes |
| Material Type | Fine Grain Phosphate Bonded Investment | Fine Grain Phosphate | Carbon-Free Phosphate Bonded | Refractory Die Material | Phosphate Bonded |
| Indication For Use | Pressable Ceramics | Universal Phosphate Investment for All Crown and Bridge Alloys | High Fusing Alloys | Direct Firing Ceramics | Casting Partials with Chromium Dental Alloys |
| Liquid / Powder Ratio | 27 mL / 100 g | 27 mL / 100 g | 16 mL / 100 g | 19 mL / 100 g | 11 mL / 100 g |
| Setting Expansion | 1 % | 1 % | 0.7 % | 0.3 % | 0.2 % |
| Ready For Burnout | 15 minutes | 15 minutes | 60 minutes | Not Available | 30 - 60 minutes |
| Hygroscopic Expansion | N / A | N / A | N / A | N / A | N / A |
| Thermal Expansion | 0.7 % | 1.0 % | 1.2 % | 500° C, 2nd Firing - 0.8 % | 700 -- 1,000° C (1,300 -- 1,800° F) - 0.90 % |
| Metal or Ringless Technique | Metal or Ringless | Metal or Ringless | Metal or Ringless | N / A | Metal or Ringless |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |