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	Harmony Extra Hard Crown and Bridge Alloy	Capricorn 15 Porcelain Alloy	Elektra Crown and Bridge Alloy	Lodestar Porcelain Alloy	W-5 Porcelain Alloy
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Description	Clinically proven reduced gold crown and bridge alloy demonstrating outstanding properties.	Capricorn 15 is a palladium-silver alloy with coordinated mechanical and physical properties for conventional feldspar ceramics.	Clinically proven palladium-based alloy demonstrating outstanding properties.	Lodestar is a silver-free reduced gold ceramic alloy demonstrating outstanding properties.	W-5 is a gold-containing alloy for the IPS d.SIGN fluorapatite leucite metal-ceramic and conventional feldspar ceramics. Its mechanical and physical
Composition	Gold: 68.3 % Platinum: 2.9 % Palladium: 3.6 % Silver: 10 % Copper: 13.8 % Zinc: 1.1 % Indium: Less Than 1 % Iridium: Less Than 1 %	Gold: 15 % Palladium: 51.9 % Silver: 23 % Indium: 8 % Gallium: 2 % Rhenium: Less Than 1 % Ruthenium: Less Than 1 %	Palladium: 25 % Silver: 58.3 % Copper: 14.7 % Indium: 2 % Ruthenium: Less Than 1 % Lithium: Less Than 1 % Rhenium: Less Than 1 %	Gold: 51.5 % Palladium: 38.5 % Indium: 8.5 % Gallium: 1.5 % Ruthenium: Less Than 1 % Rhenium: Less Than 1 %	Gold: 52.2 % Palladium: 26 % Silver: 17.1 % Tin: 2.7 % Platinum: Less Than 1 % Indium: Less Than 1 % Iridium: Less Than 1 % Rhenium: Less Than 1 % Lithium: Less Than 1 %
Hardness	255 HV	255 HV	185 HV	240 HV	255 HV
Tensile Strength	735 N/mm²	101 N/mm²	465 N/mm²	98 N/mm²	118 N/mm²
Indications for Use	Inlays Onlays Partial Crowns Single Crowns Telescope And Conus 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	Onlays Partial Crowns Single Crowns Telescope And Conus Crowns Root Canal Posts 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 Inlays 3/4 Crowns Crowns Telescope And Conus Crowns PFM Crowns Posts Short And Long Span Bridges Implant Superstructures Partial Dentures
Color	Yellow	White	White	White	White
Compatible Porcelains	Not Available	IPS Classic And Conventional Ceramics	Not Available	Not Available	Not Available
Melting Interval	900° C - 960° C	1,230° C - 1,310° C	865° C - 990° C	1,215° C - 1,290° C	1,185° C - 1,230° C
Casting Temperature	1,015° C - 1,075° C	1,365° C - 1,425° C	1,045° C - 1,105° C	1,350° C - 1,410° C	1,285° C - 1,345 ° C
Expansion	14 %	21 %	8 %	20 %	20 %
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