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 | Ivoclar Vivadent Inc. | Ivoclar Vivadent Inc. | Ivoclar Vivadent Inc. | Ivoclar Vivadent Inc. | Ivoclar Vivadent Inc. |
Item | Harmony 3 Crown and Bridge Alloy | Aries Porcelain Alloy | Harmony Medium Crown and Bridge Alloy | IPS d.SIGN 30 Porcelain Alloy | MiniGold Crown and Bridge Alloy |
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Description | Harmony 3 contains 3.5% gold and is a noble alternative to the gold-free base metal casting alloys. What is more, it is very economical due to its low | Aries is a clinically proven palladium-based ceramic alloy demonstrating outstanding properties. | Clinically proven high gold crown and bridge alloy demonstrating outstanding properties. | IPS d.SIGN 30 is a cobalt-chromium ceramic alloy. Its mechanical and physical properties are coordinated with the IPS d.SIGN fluorapatite glass- | Clinically proven reduced gold crown and bridge alloy demonstrating outstanding properties. |
Composition | Gold: 3.5 %
Palladium: 25.9 %
Silver: 50.8 %
Copper: 13.8 %
Tin: 4.5 %
Zinc: 1.2 %
Rhenium: 1 %
| Palladium: 63.7 %
Silver: 26 %
Tin: 7 %
Gallium: 1.8 %
Indium: 1.5 %
Ruthenium: Less Than 1 %
Rhenium: Less Than 1 % | Gold: 76.8 %
Silver: 12.8 %
Copper: 8.3 %
Palladium: Less Than 1 %
Zinc: Less Than 1 %
Indium: Less Than 1 %
Iridium: Less Than 1 % | Cobalt: 60.2 %
Chromium: 30.1 %
Gallium: 3.9 %
Niobium: 3.2 %
Molybdenum : Less Than 1 %
Silicon: Less Than 1 %
Boron : Less Than 1 %
Iron: Less Than 1 %
Aluminum : Less Than 1 %
Lithium: Less Than 1 % | Gold: 40 %
Silver: 47 %
Copper: 7.5 %
Palladium: 4 %
Zinc: 1 %
Indium: Less Than 1 %
Iridium: Less Than 1% |
Hardness | 230 HV | 195 HV | 120 HV | 375 HV | 125 HV |
Tensile Strength | 102 N/mm2 | 98 N/mm2 | 235 N/mm2 | Not Available | 410 N/mm2 |
Indications for Use | Inlays
Onlays
3/4 Crowns
Crowns
Telescope And Conus Crowns
Posts
Short And Long Span Bridges | Onlays
Inlays
Partial Crowns
Single Crowns
Telescope And Conus Crowns
Root Canal Posts
Short And Long Span Bridges | Inlays
Onlays
Partial Crowns
Single Crowns
Short Span Bridges | Single Crowns
Telescope And Conus Crowns
Root Canal Posts
Short And Long Span Bridges
Implant Superstructures
Model Casts | Onlays
Inlays
Partial Crowns
Single Crowns
Telescope And Conus Crowns
Root Canal Posts
Short And Long Span Bridges |
Color | White | White | Rich Yellow | White | Yellow |
Melting Interval | 880° C - 960° C | 1,165° C - 1,290° C | 880° C - 945° C | 1,145° C - 1,165° C | 865° C - 945° C |
Casting Temperature | 1,020° C - 1,050° C | 1,345° C - 1,405° C | 1,000° C - 1,060° C | 1,240° C - 1,350° C | 980° C - 1,040° C |
Expansion | 14 % | 46 % | 40 % | 6 % | 28 % |
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