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	Lodestar Porcelain Alloy	4all Porcelain Alloy	IPS d.SIGN 96 Porcelain Alloy	W-1 Porcelain Alloy	Y-1 Porcelain Alloy
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Description	Lodestar is a silver-free reduced gold ceramic alloy demonstrating outstanding properties.	4all is a nickel-chromium ceramic alloy. Its mechanical and physical properties have been coordinated with conventional feldspar ceramics.	IPS d.SIGN 96 is high-gold ceramic alloy. Its mechanical and physical properties are coordinated with the IPS d.SIGN fluorapatite glass-ceramic.	W-1 is a clinically proven palladium-based ceramic alloy demonstrating outstanding properties.	Y-1 is a clinically proven high-gold ceramic alloy demonstrating outstanding properties.
Composition	Gold: 51.5 % Palladium: 38.5 % Indium: 8.5 % Gallium: 1.5 % Ruthenium: Less Than 1 % Rhenium: Less Than 1 %	Nickle: 61.4 % Chromium: 25.7 % Molybdenum: 11 % Silicon: 1.5 % Manganese: Less Than 1 % Aluminum: Less Than 1 % Carbon: Less Than 1 %	Gold: 73.8 % Silver: 9 % Platinum: 8.5 % Palladium: 5.4 % Indium: 1.9 % Niobium: Less Than 1 % Manganese: Less Than 1 % Iron: Less Than 1 % Tantalum: Less Than 1 % Rhenium: Less Than 1 % Ruthenium: Less Than 1 % Lithium: Less Than 1 %	Palladium: 53.3 % Silver: 37.7 % Tin: 8.5 % Indium: Less Than 1 % Ruthenium: Less Than 1 % Lithium: 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	240 HV	235 HV	215 HV	240 HV	185 HV
Tensile Strength	98 N/mm²	Not Available	92 N/mm²	114 N/mm²	340 N/mm²
Indications for Use	Onlays Inlays 3/4 Crowns Crowns Telescope And Conus Crowns PFM Crowns Posts Short And Long Span Bridges Implant Superstructures Partial Dentures	Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges	Inlays 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 Implant Superstructures Partial Dentures	Onlays Inlays Partial Crowns Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges
Color	White	White	Yellow	White	Yellow
Melting Interval	1,215° C - 1,290° C	1,260° C - 1,350° C	1,050° C - 1,170° C	1,185° C - 1,270° C	1,175° C - 1,205° C
Casting Temperature	1,350° C - 1,410° C	1,405° C - 1,465° C	1,225° C - 1,285° C	1,320° C - 1,380° C	1,260° C - 1,320° C
Expansion	20 %	12 %	14 %	11 %	15 %
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