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 | Lunar Porcelain Alloy | Degudent LS Porcelain Alloy | Majority Crown and Bridge Alloy | Miracast | Ney-Oro A-1 Crown and Bridge Alloy |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | Superior marginal stability and great compatibility with a wide range of available porcelain systems. Lunar's excellent ductility increases resistance | Degudent LS is a micro-fine, extra-hard alloy suitable for MOD's, single crowns, long span bridgework, milled restorations in conjunction with | Type III. Flexibility is Majority's premier asset. Soften to Type II ductility levels for onlays or harden to Type IV strength for high stress | Type III. The dollar-wise choice for mainstream performance and color. Miracast has rich gold color and flexible processing. Easily burnishable when | Type II. Yellow gold color. High ductility yet strong enough for a firm resistance to occlusal pressure. Premium Type II performance for inlays and |
| Composition | Palladium: 60 %
Silver: 29.5 %
Iridium: Less Than 1 %
Zinc: Less Than 1 %
Indium: Less Than 1 %
Gallium: Less Than 1 %
Tin: Less Than 1 % | Gold: 73.1 %
Platinum: 1.5 %
Palladium: 5.8 %
Silver: 16 %
Tin: Less Than 1 %
Zince: Less Than 1 %
Iridium: Less Than 1 % | Gold: 50 %
Palladium: 4.5 %
Silver: 10 %
Copper: 31 %
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 % | Gold: 77.5 %
Palladium: 2 %
Silver: 12.5 %
Copper: 7.3 %
Zinc: Less Than 1 % |
| Hardness | 244 HV | 235 HV | 220 HV | 158 HV | 125 HV |
| Tensile Strength | 560 N/mm2 | 560 N/mm2 | 526 N/mm2 | 340 N/mm2 | 230 N/mm2 |
| Indications for Use | All Around Laboratory Use | MOD's
Single Crowns
Long Span Bridgework
Milled Restorations In Conjunction
With Precision Attachments
Partial Dentures
Implant Superstructures | Not Available | Crowns
Bridges | Inlays
Single Crowns
Partial Dentures
Long Span Bridgework
Milled Restorations |
| Color | White | Gold | Gold | Gold | Gold |
| Compatible Porcelains | Wide Range Of Porcelains | Duceragold Porcelain | Not Available | Not Available | Not Available |
| Melting Interval | 1,180° C - 1,290° C | 985° C - 1,065° C | 835° C - 885° C | 840° C - 925° C | 928° C - 968° C |
| Casting Temperature | 1,370° C | 1,200° C | 990° C | 1,025° C | 1,060° C |
| Expansion | 35 % | 5 % | 7 % | 39 % | 48 % |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |