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 | Image 2 Porcelain Alloy | Degustar GA-2 Porcelain Alloy | Ney-Oro 41 Crown and Bridge Alloy | Ney-Oro 60 Crown and Bridge Alloy | Ney-Oro B-20 Crown and Bridge Alloy |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | Type IV micro-fine grain alloy that is recommended for single crowns, long span bridges and implant superstructures. Low fusing benefits. | Degustar GA-2 is a noble, micro-fine grain palladium-silver alloy which offers excellent physical properties and represents an outstanding alternative | Type III. The unique, copper-free formulation is the secret to the exceptional strength and gold color. Low density for more units per ounce. An | Type IV. Ney-Oro 60's outstanding strength is suitable for implant applications and demanding crown and bridge cases. Produces exceptional smooth | Type III. Designed as the economical alternative to higher nobility Type III alloys, B-20 retains all of the properties and retains good color. Can be |
| Composition | Gold: 84.5 %
Platinum: 6.9 %
Palladium: 5 %
Silver: 1 %
Zinc: Less Than 1 %
Indium: Less Than 1 %
Iron: Less Than 1 %
Rhenium: Less Than 1 %
| Gold: 2 %
Palladium: 52 %
Silver: 36 %
Tin: Less Than 1 %
Zinc: Less Than 1 %
Indium: Less Than 1 %
Ruthenium: Less Than 1 % | Gold: 20 %
Platinum: 1 %
Palladium: 21 %
Silver: 38.5 %
Zinc: Less Than 1 %
Indium: Less Than 1 % | Gold: 56 %
Palladium: 4 %
Silver: 19.9 %
Copper: 17 %
Zinc: Less Than 1 %
Iridium: Less Than 1 % | Gold: 61.8 %
Palladium: 3 %
Silver: 26 %
Copper: 8 %
Zinc: Less Than 1 %
Iridium: Less Than 1 % |
| Hardness | 230 HV | 250 HV | 185 HV | 265 HV | 205 HV |
| Tensile Strength | 671 N/mm2 | 560 N/mm2 | 405 N/mm2 | 790 N/mm2 | 555 N/mm2 |
| Indications for Use | Single Crowns
Long Span Bridges
Implant Superstructures | Implants
Crowns
Bridgework | Flat Rate Noble Crowns | Implant
Crown And Bridge Cases | Not Available |
| Color | Gold | White | Gold | Gold | Gold |
| Compatible Porcelains | Duceragold Porcelain | Not Available | Not Available | Not Available | Not Available |
| Melting Interval | 1,090° C - 1,195° C | 1,150° C - 1,230° C | 860° C - 1,035° C | 835° C - 865° C | 885° C - 950° C |
| Casting Temperature | 1,290° C | 1,400° C | 1,130° C | 955° C | 1,040° C |
| Expansion | 7 % | 10 % | 6 % | 8 % | 19 % |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |