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	Capricorn 15 Porcelain Alloy	IPS d.SIGN 96 Porcelain Alloy	Midigold 50 Crown and Bridge Alloy	Solarcast 20 Crown and Bridge Alloy	WLW Crown and Bridge Alloy
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Description	Capricorn 15 is a palladium-silver alloy with coordinated mechanical and physical properties for 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.	Midigold 50 is a reduced gold crown and bridge alloy demonstrating outstanding properties.	Clinically proven palladium-based alloy demonstrating outstanding properties.	Clinically proven palladium-based alloy demonstrating outstanding properties.
Composition	Gold: 15 % Palladium: 51.9 % Silver: 23 % Indium: 8 % Gallium: 2 % Rhenium: Less Than 1 % Ruthenium: 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 %	Gold: 50 % Palladium: 3.5 % Silver: 35 % Copper: 9.5 % Indium: 2 % Iridium: Less Than 1 %	Gold: 20 % Palladium: 15 % Silver: 40 % Indium: 11 % Copper: 10 % Tin: 2 % Zinc: 2 %	Palladium: 25 % Silver: 71 % Indium: 4 % Lithium: Less Than 1 %
Hardness	255 HV	215 HV	180 HV	195 HV	150 HV
Tensile Strength	101 N/mm²	92 N/mm²	470 N/mm²	Not Available	320 N/mm²
Indications for Use	Onlays Partial Crowns Single Crowns Telescope And Conus Crowns Posts Short And Long Span Bridges Implant Superstructures Partial Dentures	Inlays Onlays Partial Crowns Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges	Onlays 3/4 Crowns Crowns Telescope And Conus Crowns Posts Short And Long Span Bridges Implant Superstructure	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 Root Canal Posts Short And Long Span Bridges
Color	White	Yellow	Yellow	Yellow	White
Compatible Porcelains	IPS Classic And Conventional Ceramics	Not Available	Not Available	Not Available	Not Available
Melting Interval	1,230° C - 1,310° C	1,050° C - 1,170° C	825° C - 915° C	815° C - 875° C	1,045° C - 1,130° C
Casting Temperature	1,365° C - 1,425° C	1,225° C - 1,285° C	970° C - 1,030° C	930° C - 990° C	1,180° C - 1,240° C
Expansion	21 %	14 %	6 %	8 %	5 %
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