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 | Eclipse Porcelain Alloy | G Cast Crown and Bridge Alloy | Ney 76 Crown and Bridge Alloy | Ney-Oro G-3 |
| 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 | A proven performer. High noble classification. The silver-free formulation eliminates any fear of porcelain greening. A highly popular alloy due to | 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. A multi-purpose, noble alloy that is highly suitable for full cast crowns and cast posts. Excellent for long spans or restorations subject | 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: 52 %
Palladium: 37.5 %
Zinc: Less Than 1 %
Indium: Less Than 1 %
Tin: Less Than 1 %
Rhenium: Less Than 1 % | Gold: 50 %
Palladium: 5 %
Silver: 32 %
Copper: 12 %
Zinc: Less Than 1 %
Iridium: Less Than 1 % | Palladium: 25 %
Silver: 59 %
Copper: 14 %
Zinc: Less Than 1 %
Iridium: Less Than 1 % | Au - 68.5
Pt - 2.5
Pd - 4.0
Ag - 12.0
Cu - 11.0
Zn - Trace |
| Hardness | 250 HV | 254 HV | 235 HV | 235 HV | 282 HV |
| Tensile Strength | 560 N/mm2 | 575 N/mm2 | 815 N/mm2 | 660 N/mm2 | Inquire |
| Indications for Use | Implants
Crowns
Bridgework | Implants
Restorations | MOD Inlays
Single Crowns
Small Bridgework | Full Cast Crowns And Cast Posts
Long Spans Or Restorations | Implant Cases
Partial Dentures
Clasps |
| Color | White | White | Gold | White | Gold |
| Compatible Porcelains | Not Available | Not Available | Not Available | Not Available | Inquire |
| Melting Interval | 1,150° C - 1,230° C | 1,160° C - 1,265° C | 860° C - 1,700° C | 900° C - 980° C | 906° C - 949° C |
| Casting Temperature | 1,400° C | 1,370° C | 1,125° C | 1,080° C | 1045° C |
| Expansion | 10 % | 23 % | 8 % | 9 % | 13% |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |