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	Callisto Implant 60 Alloy	IPS d.SIGN 30 Porcelain Alloy	Leo Porcelain Alloy	WLW Crown and Bridge Alloy	Y-Lite Porcelain Alloy
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Description	Callisto Implant 60 is a palladium based ceramic alloy especially suitable for implant superstructures.	IPS d.SIGN 30 is a cobalt-chromium ceramic alloy. Its mechanical and physical properties are coordinated with the IPS d.SIGN fluorapatite glass-	Leo is a reduced gold ceramic alloy demonstrating outstanding properties.	Clinically proven palladium-based alloy demonstrating outstanding properties.	Y-Lite is a clinically proven high-gold ceramic alloy demonstrating outstanding properties.
Composition	Palladium: 60 % Silver: 25.2 % Tin: 7.5 % Gold: 2 % Indium: 2 % Zinc: 1.6 % Gallium: 1 % Platinum: Less Than 1 % Rhenium: 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: 45 % Palladium: 41 % Silver: 6 % Indium: 3.4 % Tin: 2.2 % Galladium: 1.8 % Ruthenium: Less Than 1 % Rhenium: Less Than 1 % Lithium: Less Than 1 %	Palladium: 25 % Silver: 71 % Indium: 4 % Lithium: Less Than 1 %	Gold: 75 % Palladium: 18.8 % Silver: 2 % Tin: 2 % Indium: 2 % Copper: Less Than 1 % Rhenium: Less Than 1 %
Hardness	275 HV	375 HV	190 HV	150 HV	225 HV
Tensile Strength	610 N/mm²	Not Available	114 N/mm²	320 N/mm²	500 N/mm²
Indications for Use	Onlays Partial Crowns Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges Implant Superstructures Model Casts	Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges Implant Superstructures Model Casts	Onlays Inlays 3/4 Crowns Crowns Telescope And Conus Crowns PFM Crowns Posts Short And Long Span Bridges	Onlays Partial Crowns Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges	Onlays Partial Crowns Single Crowns Telescope And Conus Crowns Posts Short And Long Span Bridges Partial Dentures
Color	White	White	White	White	Yellow
Melting Interval	1,100° C - 1,260° C	1,145° C - 1,165° C	1,225° C - 1,315° C	1,045° C - 1,130° C	1,150° C - 1,250° C
Casting Temperature	1,320° C - 1,360° C	1,240° C - 1,350° C	1,370° C - 1,430° C	1,180° C - 1,240° C	1,305° C - 1,365° C
Expansion	19 %	6 %	21 %	5 %	14 %
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