Dental alloys are used for a casting a range of restorations, copings, frames and more. These alloys can be composed of a range of noble, high noble and base metals, and each mixture offers different properties that can make one alloy ideal for a specific restorative situation and another alloy completely unsuited to the same task. Full contour crowns and bridges are most often case from noble and high noble metals such as gold and platinum, but these softer metals might not be suited for posterior crowns on a bruxing patient. A wider range of alloys can be used for casting copings and substructures for porcelain-fused-to-metal (PFM) restorations. It is important to coordinate the alloy and the ceramic systems being used for a PFM restoration. Casting dental alloys requires specific techniques with different alloys melting at different temperatures, so be sure to follow the protocols that deliver the best results for your lab.
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| Company | Dentsply Sirona Prosthetics | Dentsply Sirona Prosthetics | Dentsply Sirona Prosthetics | Dentsply Sirona Prosthetics | Dentsply Sirona Prosthetics |
| Item | Deva 4 Porcelain Alloy | Acclaim Lite Porcelain Alloy | BiOcclus Porcelain Alloy | G Cast Crown and Bridge Alloy | Miracast |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | Deva 4 is a high noble, micro-fine grain Porcelain Alloy, which may be used with most leading dental porcelains. Deva 4 is biocompatible and does not | Outstanding performance is a direct result of Acclaim's high yield strength. Averaging 30% stronger than competitive alloys, the increased strength | BiOcclus 4 is a micro-fine high noble alloy with Type IV strength. The absence of copper and palladium guarantees both tarnish and corrosion | G Cast is a noble, yellow Crown & Bridge Alloy containing 50 %; gold. This Type III alloy features a micro-fine grain structure and is ideally suited | Type III. The dollar-wise choice for mainstream performance and color. Miracast has rich gold color and flexible processing. Easily burnishable when |
| Composition | Gold: 51.1 %
Palladium: 38.5 %
Indium: Less Than 1 %
Gallium: Less Than 1 %
Iridium: Less Than 1 % | Palladium: 49.9 %
Silver: 39.9 %
Indium: Less Than 1 %
Gallium: Less Than 1 %
Ruthenium: Less Than 1 %
Rhenium: Less Than 1 % | Gold: 85.8 %
Platinum: 11 %
Zinc: Less Than 1%
Indium: Less Than 1 %
Rhodium: Less Than 1 %
Tantalum: Less Than 1 % | Gold: 50 %
Palladium: 5 %
Silver: 32 %
Copper: 12 %
Zinc: Less Than 1 %
Iridium: Less Than 1 % | Gold: 40.9 %
Platinum: 1 %
Palladium: 4 %
Silver: 9 %
Copper: 38 %
Zinc: Less Than 1 %
Iridium: Less Than 1 % |
| Hardness | 235 HV | 250 HV | 210 HV | 235 HV | 158 HV |
| Tensile Strength | 545 N/mm2 | 635 N/mm2 | 530 N/mm2 | 815 N/mm2 | 340 N/mm2 |
| Indications for Use | Implants | Not Available | Not Available | MOD Inlays
Single Crowns
Small Bridgework | Crowns
Bridges |
| Color | White | White | Gold | Gold | Gold |
| Compatible Porcelains | Most Dental Porcelains | Not Available | High Fusing Medium Coefficient Porcelains | Not Available | Not Available |
| Melting Interval | 1,230° C - 1,315° C | 1,175° C - 1,275° C | 1,040° C - 1,140° C | 860° C - 1,700° C | 840° C - 925° C |
| Casting Temperature | 1,425° C | 1,405° C | 1,300° C | 1,125° C | 1,025° C |
| Expansion | 18 % | 11 % | 8 % | 8 % | 39 % |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |