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	Harmony PF Crown and Bridge Alloy	Evolution Lite Porcelain Alloy	IPS d.SIGN 98 Porcelain Alloy	Sagittarius Porcelain Alloy	W-2 Porcelain Alloy
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Description	Clinically proven high gold crown and bridge alloy demonstrating outstanding properties.	Evolution Lite is a gold-containing alloy with optimum mechanical and physical properties for IPS InLine Metal-Ceramic and conventional feldspar	IPS d.SIGN 98 is a high-gold ceramic alloy, free of palladium, silver and copper. Its mechanical and physical properties are coordinated with the IPS	Sagittarius is a high-gold ceramic alloy demonstrating outstanding properties.	W-2 is a clinically proven reduced gold ceramic alloy demonstrating outstanding properties.
Composition	Gold: 72 % Platinum: 3.6 % Copper: 9.8 % Silver: 13.7 % Zinc: Less Than 1 % Iridium: Less Than 1 %	Gold: 40.3 % Palladium: 39.3 % Indium: 9.3 % Silver: 9.2 % Gallium: 1.8 % Ruthenium: Less Than 1 %	Gold: 85.9 % Platinum: 12.1 % Zinc: 1.5 % Indium: Less Than 1 % Iridium: Less Than 1 % Tantalum: Less Than1 % Iron: Less Than 1 % Manganese: Less Than 1%	Gold: 75 % Palladium: 16.8 % Platinum: 2 % Silver: 2 % Indium: 2 % Tin: 2 % Copper: Less Than 1 % Rhenium: Less Than 1 %	Gold: 44.8 % Palladium: 40.5 % Silver: 5.9 % Indium: 3.3 % Tin: 2.2 % Gallium: 1.8 % Ruthenium: Less Than 1 % Rhenium: Less Than 1 % Aluminum: Less Than 1 % Silicon: Less Than 1 % Boron: Less Than 1 % Nickle: Less Than 1 % Liithium: Less Than 1 %
Hardness	245 HV	280 HV	220 HV	245 HV	205 HV
Tensile Strength	525 N/mm²	130 N/mm²	80 N/mm²	580 N/mm²	113 N/mm²
Indications for Use	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 Model Casts Implant Superstructures	Onlays Partial Crowns Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges Implant Superstructures Model Casts	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 Single Crowns Telescope And Conus Crowns Posts Short And Long Span Bridges Implant Superstructures Partial Dentures
Color	Yellow	White	Rich Yellow	White	White
Melting Interval	900° C - 940° C	1,100° C - 1,260° C	1,055° C - 1,170° C	1,130° C - 1,255° C	1,190° C - 1,280° C
Casting Temperature	1,000° C - 1,080° C	1,315° C - 1,375° C	1,225° C - 1,285° C	1,310° C - 1,370° C	1,330° C - 1,390° C
Expansion	18 %	11 %	8 %	10 %	20 %
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