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 | Kerr | Whip Mix Corporation | Kulzer | Kulzer | Kulzer |
| Item | Vel-Mix Die Stone Gypsum | Bitestone | Denstone Model Stone Gypsum | Die-Keen Green, Blue, Pink, Ivory Gypsum | Die-Keen Resin Reinforced Die Stone |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | A high strength, low expansion crown and bridge die stone that produces smooth, hard and accurate surfaces. Available in Pink or White. (Type IV) | An extremely fast setting stone for use in mounting casts, and locking gnathological instruments into position. Free flow is held to a minimum in this | Denstone is specifically suited for acrylic dentures and counter models. It is formulated to produce extremely smooth and strong casts, with | Modern Materials Gypsum Products consistency in the final
product begins with the finest raw materials available. Rigid
manufacturing processes such | The Die-Keen Resin Reinforced features: water-activated resins blended with a harder, denser natural gypsum base; tough, durable, and non-brittle with |
| Quantity | 15 kg (33 pounds) | 11 kg (25 pounds)
22 kg (50 pounds) | 11 kg (25 pounds)
22.7 kg (50 pounds) | 11 kg (25 pounds)
22.67 kg (50 pounds)
24 Pouches (120 g)
24 Pouches (60 g) | 11.3 kg (25 pounds) |
| Compressive Strength | 81 MPa | 7,000 psi (49 MPa) | 9,000 psi (62.1 MPa) | 18,000 psi (124 MPa) | 18,000 psi (124 MPa) |
| Working Time | 8 - 14 minutes | 10 - 60 seconds | Not Available | 60 seconds | Not Available |
| Set Time | 7 minutes 30 seconds - 9 minutes | 1 - 3 minutes | 8 - 10 minutes | 10 - 13 minutes | 7 - 9 minutes |
| Indication For Use | Crown And Bridge | Mounting Casts
Locking Gnathological Instruments | Cast Partials
Counter Models
Full, Partial Dentures | Optimum Expansion For Crown & Bridge
Porcelain | Crown And Bridge
Implants
Porcelain |
| Liquid / Powder Ratio | 20 mL / 100 g | 29 mL / 100 g | 30 mL / 100 g | 21 mL / 100 g
25 mL / 120 g
12.6 mL / 60 g | 20 mL / 100 g |
| Setting Expansion | 0 - 0.10% | 0.15 % | 0.11% | 0.018 - 0.2% | 0.08 - 0.10% |
| Get Info | Inquire | Not Available | Inquire | Inquire | Inquire |