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 | ResinVest | Cristobalite Investment Material | Formula 1 Universal Investment | PC 15 Phosphate Bonded Investment | X-20 Chrome Phosphate Investment |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | Designed for burning out printed or milled resin patterns for crowns, bridges, or frameworks, ResinVest is a fiber-reinforced material that resists | The principal ingredient, CRISTOBALITE, gives high thermal expansion, even at comparatively low temperatures. It is possible to use the same creamy | This high-performance, universal investment works equally well for all alloys and pressable ceramics. Its wide expansion range allows the technician | PC15 is a fine grained phosphate bonded investment for pressable ceramics. Its creamy consistency pours easily when investing and produces smooth | A vastly improved casting investment for making chrome partial denture frameworks. For casting any chrome partial alloy. Refractory Cast is hard, |
| Quantity | 100 g Package; 55 lbs. Carton | 144 - 50 g Package | 4 - 2.5 kg Package
100 - 100 g Package
150 - 60 g Package
50 - 100 g Package
50 - 60 g Package
40 - 150 g Package
340 mL Bottle
1 L Bottle
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles | 25 - 100 g Package
100 - 100 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 | 1,350 psi (9.2 MPa) | Wet - 700 psi (5 MPa) | Wet - 1.350 psi (9.2 MPa) | Wet - 500 psi (3.4 MPa) | Wet - 2,500 psi (17 MPa) |
| Working Time | 6 to 8 Minutes | 3 minutes | 6 - 8 minutes | 7 - 9 minutes | 4 - 5 minutes |
| Set Time | 30 Minutes Minimum | 16 minutes | Not Available | Not Available | Not Available |
| Material Type | Phosphate Investment | Gypsum Bonded Investment | Phosphate Bonded Investment | Fine Grain Phosphate Bonded Investment | Phosphate Bonded |
| Indication For Use | Burning out milled or printed resin patterns | Low Fusing Crown and Bridge Alloys | Universal Investment for All Alloys and Pressable Ceramics | Pressable Ceramics | Casting Partials with Chromium Dental Alloys |
| Liquid / Powder Ratio | 22 ml/100 g | 30 mL / 100 g | 22 mL / 100 g | 27 mL / 100 g | 11 mL / 100 g |
| Setting Expansion | 1.6 Percent | 0.5 % | 1.6 % | 1 % | 0.2 % |
| Ready For Burnout | Yes | 30 minutes | 15 minutes | 15 minutes | 30 - 60 minutes |
| Hygroscopic Expansion | Not Available | Not Available | N / A | N / A | N / A |
| Thermal Expansion | 0.65 Percent | 650º C (1,200º F) - 1.25 % | 0.65 % | 0.7 % | 700 -- 1,000° C (1,300 -- 1,800° F) - 0.90 % |
| Metal or Ringless Technique | Both | Metal Only | Metal or Ringless | Metal or Ringless | Metal or Ringless |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |