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 | Degustar GA-2 Porcelain Alloy | Degudent LS Porcelain Alloy | Degunorm Crown and Bridge Alloy | Ney-Oro B-2 Crown and Bridge Alloy | Ney-Oro G-3 Crown and Bridge Alloy |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | Degustar GA-2 is a noble, micro-fine grain palladium-silver alloy which offers excellent physical properties and represents an outstanding alternative | Degudent LS is a micro-fine, extra-hard alloy suitable for MOD's, single crowns, long span bridgework, milled restorations in conjunction with | Premium High Noble Alloy | Type III. A proven history of clinical performance has established B-2 to be a comparison standard in the noble category. B-2 handles with ease, | Type IV. A rigid high strength alloy, G-3 is an excellent choice and is highly recommended for implant cases. Suitable for fabrication of partial |
| Composition | Gold: 2 %
Palladium: 52 %
Silver: 36 %
Tin: Less Than 1 %
Zinc: Less Than 1 %
Indium: Less Than 1 %
Ruthenium: 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: 73.8 %
Platinum: 9 %
Silver: 9.2 %
Copper: 4.4 %
Zinc: Less Than 1 %
Indium: Less Than 1 %
Iridium: Less Than 1 % | Gold: 74 %
Palladium: 4. %
Silver: 11.5 %
Copper: 10 %
Zinc: Less Than 1 %
Iridium: Less Than 1 % | Gold: 68.5 %
Platinum: 2.5 %
Palladium: 4 %
Silver: 12 %
Copper: 11 %
Zinc: Less Than 1 %
Iridium: Less Than 1% |
| Hardness | 250 HV | 235 HV | 230 HV | 185 HV | 282 HV |
| Tensile Strength | 560 N/mm2 | 560 N/mm2 | 500 N/mm2 | 321 N/mm2 | 690 N/mm2 |
| Indications for Use | Implants
Crowns
Bridgework | MOD's
Single Crowns
Long Span Bridgework
Milled Restorations In Conjunction
With Precision Attachments
Partial Dentures
Implant Superstructures | Crowns
Bridges | Crowns
Bridges | Partial Dentures And Clasps |
| Color | White | Gold | Yellow | Gold | Gold |
| Compatible Porcelains | Not Available | Duceragold Porcelain | Not Available | Not Available | Not Available |
| Melting Interval | 1,150° C - 1,230° C | 985° C - 1,065° C | 900° C - 990° C | 915° C - 966° C | 906° C - 949° C |
| Casting Temperature | 1,400° C | 1,200° C | 1,100° C | 1,060° C | 1,045° C |
| Expansion | 10 % | 5 % | 6 % | 39 % | 13 % |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |