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 | G Cast Crown and Bridge Alloy | Image 2 Porcelain Alloy | Ney-Oro 60 Crown and Bridge Alloy | Ney-Oro CB Crown and Bridge Alloy | Pors-On Plus Porcelain Alloy |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | 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 IV micro-fine grain alloy that is recommended for single crowns, long span bridges and implant superstructures. Low fusing benefits. | Type IV. Ney-Oro 60's outstanding strength is suitable for implant applications and demanding crown and bridge cases. Produces exceptional smooth | Type IV. Excellent high stress capabilities. 63% nobility with the high strength needed for implant cases. With a golden hue superior to that of | Pors-On Plus is a high noble, micro-fine grain Porcelain Alloy, which may be used with most leading dental porcelains. The well balance formulation of |
| Composition | Gold: 50 %
Palladium: 5 %
Silver: 32 %
Copper: 12 %
Zinc: Less Than 1 %
Iridium: Less Than 1 % | 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: 56 %
Palladium: 4 %
Silver: 19.9 %
Copper: 17 %
Zinc: Less Than 1 %
Iridium: Less Than 1 % | Gold: 59 %
Palladium: 4 %
Silver: 22.5 %
Copoper: 14 %
Zinc: Less Than 1 %
Iridium: Less Than 1 % | Gold: 15.5 %
Palladium: 47.5 %
Silver: 27.5 %
Tin: Less Than 1 %
Zinc: Less Than 1 %
Indium: Less Than 1 %
Ruthenium: Less Than 1 % |
| Hardness | 235 HV | 230 HV | 265 HV | 275 HV | 250 HV |
| Tensile Strength | 815 N/mm2 | 671 N/mm2 | 790 N/mm2 | 795 N/mm2 | 605 N/mm2 |
| Indications for Use | MOD Inlays
Single Crowns
Small Bridgework | Single Crowns
Long Span Bridges
Implant Superstructures | Implant
Crown And Bridge Cases | Implant | Bridgework |
| Color | Gold | Gold | Gold | Gold | White |
| Compatible Porcelains | Not Available | Duceragold Porcelain | Not Available | Not Available | Not Available |
| Melting Interval | 860° C - 1,700° C | 1,090° C - 1,195° C | 835° C - 865° C | 860° C - 905° C | 1,170° C - 1,255° C |
| Casting Temperature | 1,125° C | 1,290° C | 955° C | 995° C | 1,400° C |
| Expansion | 8 % | 7 % | 8 % | 11 % | 15 % |
| Get Info | Not Available | Not Available | Not Available | Not Available | Not Available |