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	4all Porcelain Alloy	BioUniversal E Porcelain Alloy	Midigold 50 Crown and Bridge Alloy	Spartan Plus Porcelain Alloy	Y-Lite Porcelain Alloy
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Description	4all is a nickel-chromium ceramic alloy. Its mechanical and physical properties have been coordinated with conventional feldspar ceramics.	BioUniversal is a silver-palladium universal alloy which is suitable as a substructure for veneers made of special ceramic and composite materials.	Midigold 50 is a reduced gold crown and bridge alloy demonstrating outstanding properties.	Spartan Plus is a palladium-based ceramic alloy demonstrating outstanding properties.	Y-Lite is a clinically proven high-gold ceramic alloy demonstrating outstanding properties.
Composition	Nickle: 61.4 % Chromium: 25.7 % Molybdenum: 11 % Silicon: 1.5 % Manganese: Less Than 1 % Aluminum: Less Than 1 % Carbon: 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: 50 % Palladium: 3.5 % Silver: 35 % Copper: 9.5 % Indium: 2 % Iridium: Less Than 1 %	Palladium: 78.8 % Copper: 10 % Gallium: 9 % Gold: 2 % Lithium: Less Than 1 % Germanium: Less Than 1 % Iridium: Less Than 1 %	Gold: 75 % Palladium: 18.8 % Silver: 2 % Tin: 2 % Indium: 2 % Copper: Less Than 1 % Rhenium: Less Than 1 %
Hardness	235 HV	190 HV	180 HV	310 HV	225 HV
Tensile Strength	Not Available	127 N/mm²	470 N/mm²	97 N/mm²	500 N/mm²
Indications for Use	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 3/4 Crowns Crowns Telescope And Conus Crowns Posts Short And Long Span Bridges Implant Superstructure	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 Partial Dentures
Color	White	White	Yellow	White	Yellow
Compatible Porcelains	Not Available	Special Ceramics Composite Materials	Not Available	Not Available	Not Available
Melting Interval	1,260° C - 1,350° C	1,100° C - 1150° C	825° C - 915° C	1,130° C - 1,210° C	1,150° C - 1,250° C
Casting Temperature	1,405° C - 1,465° C	1,200° C - 1,260° C	970° C - 1,030° C	1,260° C - 1,320° C	1,305° C - 1,365° C
Expansion	12 %	10 %	6 %	20 %	14 %
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