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	Academy Gold Crown and Bridge Alloy	BioUniversal E Porcelain Alloy	Golden Ceramic Porcelain Alloy	Protocol Porcelain Alloy	Spartan Porcelain Alloy
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Description	The intense golden yellow colour is identical to the one of plugging gold. This high-precious, palladium-free multiple-purpose alloy (Type 2 / Type 3)	BioUniversal is a silver-palladium universal alloy which is suitable as a substructure for veneers made of special ceramic and composite materials.	Gold Ceramic is a clinically proven high-gold ceramic alloy demonstrating outstanding properties.	Protocol is a palladium-based ceramic alloy demonstrating outstanding properties.	Clinically proven palladium-based ceramic alloy demonstrating outstanding properties
Composition	Gold: 77.2 % Silver: 12.7 % Copper: 8.5 % Platinum: Less Than 1 % Indium: Less Than 1 % Iridium: Less Than 1 % Zinc: Less Than 1 % Tantalum: Less Than 1 %	Silver: 52.2 % Palladium: 40 % Tin: 5.5 % Indium: 1.4 % Rhenium: Less Than 1 % Ruthenium: Less Than 1 % Zinc: Less Than 1%	Gold: 86.9 % Platinum : 8 % Palladium: 2.5 % Silver: Less Than 1 % Tin: Less Than 1 % Indium: Less Than 1 % Ruthenium: Less Than 1 % Rhenium: Less Than 1 % Tantalum: Less Than 1 % Iron: Less Than 1 % Lithium: Less Than 1 %	Palladium: 75.2 % Silver: 6.5 % Gold: 6 % Indium: 6 % Gallium: 6 % Ruthenium: Less Than 1 % Lithium: Less Than 1 %	Palladium: 78.7 % Copper: 10 % Gallium: 9 % Gold: 2 % Iridium: Less Than 1 % Boron: Les Than 1 %
Hardness	125 HV	190 HV	165 HV	235 HV	360 HV
Tensile Strength	240 N/mm²	127 N/mm²	64 N/mm²	103 N/mm²	94 N/mm²
Indications for Use	Inlays Onlays Partial Crowns Crowns Short Span Bridges	Inlays Onlays 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 Short And Long Span Bridges	Onlays Inlays 3/4 Crowns Crowns Telescope And Conus Crowns PFM Crowns Posts Short And Long Span Bridges Implant Superstructures Partial Dentures	Onlays Partial Crowns Single Crowns Telescope And Conus Crowns Posts Short And Long Span Bridges Implant Superstructures Partial Dentures
Color	Yellow Golden	White	Rich Yellow	White	White
Compatible Porcelains	Not Available	Special Ceramics Composite Materials	Not Available	Not Available	Not Available
Melting Interval	900° C - 940° C	1,100° C - 1150° C	1,060° C - 1,140° C	1,270° C - 1,310° C	1,115° C - 1,160° C
Casting Temperature	1,035° C - 1,095° C	1,200° C - 1,260° C	1,190° C - 1,250° C	1,365° C - 1,425° C	1,215° C - 1,275° C
Expansion	55 %	10 %	12 %	34 %	19 %
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