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.
|  |  |  |  |  |
| Company | Whip Mix Corporation | Whip Mix Corporation | Whip Mix Corporation | Whip Mix Corporation | Whip Mix Corporation |
| Item | Beauty-Cast Gypsum Investment | Ceramigold Investment with Carbon | Hi Temp Carbon-Free Investment | Soldering Investment | V.H.T. Refractory Investment |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | The proven standard for the Hygroscopic Technique. Also excellent for the High Heat Technique. | This phosphate investment contains carbon for bright, gold-colored castings. Expansion can be controlled to fit your needs -- yet technic is easy to | A special investment for non-precious and semi-precious alloys. HI-TEMP contains no carbon. Non-precious metal alloys require an investment specially | Multi-purpose SOLDERING INVESTMENT isideal for soldering all types of dental alloys, including chrome-cobalt. Its fine texture mixes readily with | 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 | 144 - 75 g Package
144 - 50 g Package
24 - 50 g Package
11 kg (25 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 | 144 - 90 g Package
144 - 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 | 24 - 60 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle |
| Compressive Strength | Wet - 700 psi (5 MPa) | Wet - 1,500 psi (10 MPa) | Wet - 1,500 psi (10 MPa) | Wet - 1,200 psi (9 MPa) | Wet - 2,500 psi (17 MPa)
Dry - 4,800 psi (34 MPa) |
| Working Time | 3 minutes | 6 - 7 minutes | 7 - 8 minutes | 2 - 3 minutes | 4 - 5 minutes |
| Set Time | 14.5 minutes | Not Available | Not Available | 15 minutes | Not Available |
| Material Type | Gypsum Casting Investment | Phosphate Bonded Investment | Carbon-Free Phosphate Bonded | Gypsum Bonded Investment | Refractory Die Material |
| Indication For Use | Low Fusing Crown and Bridge Alloys | Crown and Bridge and Ceramic Gold Alloys | High Fusing Alloys | Low and High Fusing Precious Metals | Direct Firing Ceramics |
| Liquid / Powder Ratio | 30 mL/100 g | 16 mL /100 g | 16 mL / 100 g | 24 mL / 100 g | 19 mL / 100 g |
| Setting Expansion | 0.4 % | 0.7 % | 0.7 % | 0.25 % | 0.3 % |
| Ready For Burnout | 30 minutes | 60 minutes | 60 minutes | 30 Minutes | Not Available |
| Hygroscopic Expansion | 1.5 % | N / A | N / A | N / A | N / A |
| Thermal Expansion | 480º C (900º F) - 0.55%
650º C (1,200º F) - 1.20% | 1.2 % | 1.2 % | 700° C (1,300° F) - 0.60 % | 500° C, 2nd Firing - 0.8 % |
| Metal or Ringless Technique | Metal Only | Metal or Ringless | Metal or Ringless | N / A | N / A |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |