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 | Aquarius XH Porcelain Alloy | Academy Gold Crown and Bridge Alloy | Maxigold KF Crown and Bridge Alloy | XL-X Crown and Bridge Alloy | Y-1 Porcelain Alloy |
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Description | Aquarius XH is a silver-free high-gold ceramic alloy demonstrating outstanding properties. | The intense golden yellow colour is identical to the one of plugging gold. This high-precious, palladium-free multiple-purpose alloy (Type 2 / Type 3) | Clinically proven reduced gold crown and bridge alloy demonstrating outstanding properties. | Clinically proven reduced-gold crown and bridge alloy demonstrating outstanding properties. | Y-1 is a clinically proven high-gold ceramic alloy demonstrating outstanding properties. |
Composition | Gold: 82.8 %
Platinum : 9 %
Palladium: 5 %
Tin: Less Than 1 %
Indium: 2.5 %
Iridium: Less Than 1 %
Tantalum: Less Than 1 %
Iron: Less Than 1 %
Lithium: Less Than 1 % | Gold: 77.2 %
Silver: 12.7 %
Copper: 8.5 %
Platinum: Less Than 1 %
Indium: Less Than 1 %
Iridium: Less Than 1 %
Zinc: Less Than 1 %
Tantalum: Less Than 1 %
| Gold: 56.6 %
Palladium: 8.4 %
Silver: 29 %
Zinc: 1 %
Indium: 5 %
Iridium: Less Than 1 % | Gold: 62.8 %
Palladium: 3.9 %
Silver: 16.1 %
Copper: 15.7 %
Zinc: 1 %
Iridium: Less Than 1 % | Gold: 74.8 %
Palladium: 12.6 %
Silver: 10.2 %
Tin: 1.3 %
Indium: 1 %
Rhenium: Less Than 1 %
Lithium: Less Than 1 % |
Hardness | 220 HV | 125 HV | 235 HV | 225 HV | 185 HV |
Tensile Strength | 83 N/mm2 | 240 N/mm2 | 480 N/mm2 | 750 N/mm2 | 340 N/mm2 |
Indications for Use | Onlays
3/4 Crowns
Crowns
Telescope And Conus Crowns
PFM Crowns
Posts
Short And Long Span Bridges
Implant Superstructures
Partial Dentures | Inlays
Onlays
Partial Crowns
Crowns
Short Span Bridges | Inlays
Onlays
Partial Crowns
Single Crowns
Telescope And Conus Crowns
Posts
Short And Long Span Bridges | Onlays
Partial Crowns
Single Crowns
Telescope And Conus Crowns
Posts
Attachments
Short And Long Span Bridges
Implant Superstructures
Partial Dentures | Onlays
Inlays
Partial Crowns
Single Crowns
Telescope And Conus Crowns
Root Canal Posts
Short And Long Span Bridges |
Color | Yellow | Yellow Golden | Yellow | Yellow | Yellow |
Melting Interval | 1,150° C - 1,185° C | 900° C - 940° C | 955° C - 1,035° C | 870° C - 910° C | 1,175° C - 1,205° C |
Casting Temperature | 1,240° C - 1,300° C | 1,035° C - 1,095° C | 1,090° C - 1,150° C | 965° C - 1,025° C | 1,260° C - 1,320° C |
Expansion | 7 % | 55 % | 5 % | 13 % | 15 % |
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