Dental lab gypsum materials are used to create highly accurate model from a physical impression of a patient's teeth. The models are fabricated by pouring the gypsum material into the impression and allowing it to harden. There are a wide range of gypsums used in dentistry with different properties depending on how the models will be used. Some gypsums are ideal for use in sectioned models and dies, others are designed to be scanned for use in CAD/CAM dentistry, while other model materials are designed for use in vacuum-forming orthodontic appliances, mouth guards or other appliances. It is important to be sure your gypsum is properly set and be sure to properly label your models and dies so they stay with the correct case.
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| Company | Whip Mix Corporation | Whip Mix Corporation | Whip Mix Corporation | Whip Mix Corporation | Whip Mix Corporation |
| Item | Lean Rock XL5 | FlowStone Gypsum | Microstone Gypsum | ResinRock Gypsum | Silky-Rock Gypsum |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | Lean Rock XL5, ISO Type 5 die stone, offers increased expansion to compensate for shrinkage of vinyl polysiloxane and other rubber-based impression | FLOWSTONE produces accurate, bubble-free bases without vibration, making it ideal for use with base formers. Its extended working time allows the | MICROSTONE's fine particle size and dense surface make it our finest general purpose laboratory stone. It is especially suited for processing acrylic | ResinRock is a resin fortified die stone produces models of the highest quality. The unique blend of synthetic resin and alpha gypsum results in | SILKY-ROCK is characterized by exceptional hardness and density throughout, and an unusual "silky-smooth" pouring quality that makes it flow freely |
| Quantity | 11 kg (25 pounds)
25 kb (55 pounds) | 22 kg (50 pounds) | 11 kg (25 pounds)
22 kg (50 pounds)
80 Packages (140 g) | 5 kg (11 pounds)
25 kg (55 pounds)
25 Packages (70 g) | 5 kg (11 pounds)
11 kg (25 pounds)
25 kg (55 pounds)
120 Packages (70 g)
80 Packages (140 g) |
| Compressive Strength | 7,200 psi (49.64 MPa) | 12,000 psi (83 MPa) | 8,500 psi (59 MPa) | 11,000 psi (76 MPa) | 13,000 psi (90 MPa) |
| Working Time | 4 - 5 minutes | 6 - 9 minutes | 5 - 7 minutes | 5 - 7 minutes | 3 - 6 minutes |
| Set Time | 5 - 7 minutes | 12 minutes | 13 minutes | 10 minutes | 10 minutes |
| Indication For Use | Small Batch Processing | Models | Acrylic Dentures | Crown & Bridge
Implant
Complex Restorative Cases | Crown And Bridge |
| Liquid / Powder Ratio | 21 mL / 100 g | 22 - 24 mL / 100 g | 28 mL / 100 g | 20 mL / 100 g | 23 mL / 100 g |
| Setting Expansion | 0.20% | 0.08 % | 0.12% | 0.08 % | 0.09% |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |