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 | FastFire 15 Phosphate Investment | Novocast Investment Material | Polyvest Refractory Die Material | Soldering 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 | 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 | NOVOCAST is an advanced inlay investment that provides increased accuracy for casting conventional gold alloys at a mold temperature of 650 degrees C | POLYVEST Refractory Die Material is formulated with a coefficient of thermal expansion to closely match today's newer porcelains. With its controlled | Multi-purpose SOLDERING INVESTMENT isideal for soldering all types of dental alloys, including chrome-cobalt. Its fine texture mixes readily with |
| Quantity | 100 g Package; 55 lbs. Carton | 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 | 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 | 2 kg (4.5 pounds) Package
11 kg (25 pounds) Carton |
| Compressive Strength | 1,350 psi (9.2 MPa) | Wet - 500 psi (3.4 MPa) | Wet - 950 psi (7 MPa) | Wet - 6,000 psi (42 MPa)
Dry - 6,500 psi (48 MPa) | Wet - 1,200 psi (9 MPa) |
| Working Time | 6 to 8 Minutes | 7 - 9 minutes | 3 minutes | 2 minutes | 2 - 3 minutes |
| Set Time | 30 Minutes Minimum | Not Available | 15 minutes | Not Available | 15 minutes |
| Material Type | Phosphate Investment | Fine Grain Phosphate | Gypsum Bonded Investment | Refractory Die Material | Gypsum Bonded Investment |
| Indication For Use | Burning out milled or printed resin patterns | Universal Phosphate Investment for All Crown and Bridge Alloys | Low Fusing Crown and Bridge Alloys | Refractory Investment - Direct Firing Ceramics | Low and High Fusing Precious Metals |
| Liquid / Powder Ratio | 22 ml/100 g | 27 mL / 100 g | 34 mL / 100 g | 22 mL / 100 g | 24 mL / 100 g |
| Setting Expansion | 1.6 Percent | 1 % | 0.45 % | 0.8 % | 0.25 % |
| Ready For Burnout | Yes | 15 minutes | 30 minutes | Not Available | 30 Minutes |
| Hygroscopic Expansion | Not Available | N / A | N / A | N / A | N / A |
| Thermal Expansion | 0.65 Percent | 1.0 % | 650° C - 1.20 % | 500° C, 2nd firing - 0.65% | 700° C (1,300° F) - 0.60 % |
| Metal or Ringless Technique | Both | Metal or Ringless | Metal Only | N / A | N / A |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |