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	Golden Ceramic Porcelain Alloy	BioUniversal Porcelain Alloy	Harmony PF Crown and Bridge Alloy	Maxigold Crown and Bridge Alloy	WLW Crown and Bridge Alloy
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Description	Gold Ceramic is a clinically proven high-gold ceramic alloy demonstrating outstanding properties.	BioUniversal is a gold-reduced universal alloy for veneering applications involving special ceramic and composite materials.	Clinically proven high gold crown and bridge alloy demonstrating outstanding properties.	Clinically proven reduced gold crown and bridge alloy demonstrating outstanding properties.	Clinically proven palladium-based alloy demonstrating outstanding properties.
Composition	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 %	Gold: 59.4 % Silver: 25.5 % Paladium: 9.5 % Platinum: 2 % Zinc: 2 % Tin: Less Than 1 % Iron: Less Than 1 % Rhenium: Less Than 1 % Ruthenium: Less Than 1 %	Gold: 72 % Platinum: 3.6 % Copper: 9.8 % Silver: 13.7 % Zinc: Less Than 1 % Iridium: Less Than 1 %	Gold: 59.5 % Palladium: 2.7 % Silver: 26.3 % Copper: 8.5 % Zinc: 2.7 % Indium: Less Than 1 % Iridium: Less Than 1 %	Palladium: 25 % Silver: 71 % Indium: 4 % Lithium: Less Than 1 %
Hardness	165 HV	225 HV	245 HV	150 HV	150 HV
Tensile Strength	64 N/mm²	103 N/mm²	525 N/mm²	310 N/mm²	320 N/mm²
Indications for Use	Onlays Inlays Partial Crowns Single Crowns Telescope And Conus Crowns Short And Long Span Bridges	Inlays Onlays 3/4 Crowns Crowns Telescope And Conus Crowns PFM Crowns Posts Short And Long Span Bridges Implant Superstructures	Onlays Inlays Partial Crowns Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges Implant Superstructures Model Casts	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 Root Canal Posts Short And Long Span Bridges
Color	Rich Yellow	Yellow	Yellow	Yellow	White
Compatible Porcelains	Not Available	Low Fusing Ceramics Composite Veneering Materials	Not Available	Not Available	Not Available
Melting Interval	1,060° C - 1,140° C	1,020° C - 1,100° C	900° C - 940° C	840° C - 890° C	1,045° C - 1,130° C
Casting Temperature	1,190° C - 1,250° C	1,155° C - 1,215° C	1,000° C - 1,080° C	940° C - 1,000° C	1,180° C - 1,240° C
Expansion	12 %	6 %	18 %	25 %	5 %
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