Side-by-side comparison of Dental Alloys

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.


Company	Ivoclar Vivadent Inc.	Ivoclar Vivadent Inc.	Ivoclar Vivadent Inc.	Ivoclar Vivadent Inc.	Ivoclar Vivadent Inc.
Item	Elektra Crown and Bridge Alloy	Harmony 3 Crown and Bridge Alloy	IPS d.SIGN 84 Porcelain Alloy	MiniGold Crown and Bridge Alloy	Y-1 Porcelain Alloy
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Description	Clinically proven palladium-based alloy demonstrating outstanding properties.	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	IPS d.SIGN 84 is a palladium-based 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.	Y-1 is a clinically proven high-gold ceramic alloy demonstrating outstanding properties.
Composition	Palladium: 25 % Silver: 58.3 % Copper: 14.7 % Indium: 2 % Ruthenium: Less Than 1 % Lithium: Less Than 1 % Rhenium: Less Than 1 %	Gold: 3.5 % Palladium: 25.9 % Silver: 50.8 % Copper: 13.8 % Tin: 4.5 % Zinc: 1.2 % Rhenium: 1 %	Palladium : 75.2 % Gold: 9 % Indium: 6.5 % Gallium: 6 % Silver: 3 % Ruthenium: Less Than 1 % Lithium: Less Than 1 % Rhenium: Less Than 1 %	Gold: 40 % Silver: 47 % Copper: 7.5 % Palladium: 4 % Zinc: 1 % Indium: Less Than 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	185 HV	230 HV	295 HV	125 HV	185 HV
Tensile Strength	465 N/mm²	102 N/mm²	117 N/mm²	410 N/mm²	340 N/mm²
Indications for Use	Onlays Partial Crowns Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges	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 Implant Superstructures Model Casts	Onlays Inlays Partial Crowns Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges	Onlays Inlays Partial Crowns Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges
Color	White	White	White	Yellow	Yellow
Melting Interval	865° C - 990° C	880° C - 960° C	1,140° C - 1,335° C	865° C - 945° C	1,175° C - 1,205° C
Casting Temperature	1,045° C - 1,105° C	1,020° C - 1,050° C	1,390° C - 1,450° C	980° C - 1,040° C	1,260° C - 1,320° C
Expansion	8 %	14 %	29 %	28 %	15 %
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