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	Y Porcelain Alloy	Aquarius XH Porcelain Alloy	Capricorn 15 Porcelain Alloy	Harmony C&B 55 Crown and Bridge Alloy	W-5 Porcelain Alloy
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Description	Y is a high-gold ceramic alloy demonstrating outstanding properties.	Aquarius XH is a silver-free high-gold ceramic alloy demonstrating outstanding properties.	Capricorn 15 is a palladium-silver alloy with coordinated mechanical and physical properties for conventional feldspar ceramics.	Harmony C&B 55 is a clinically proven reduced gold crown and bridge 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: 84 % Platinum: 7.1 % Palladium: 5.7 % Silver: 1.5 % Tin: Less Than 1 % Indium: Less Than 1 % Rhenium: Less Than 1 % Iron: Less Than 1 % Lithium: Less Than 1 %	Gold: 82.8 % Platinum : 9 % Palladium: 5 % Tin: Less Than 1 % Indium: 2.5 % Iridium: Less Than 1 % Tantalum: Less Than 1 % Iron: Less Than 1 % Lithium: Less Than 1 %	Gold: 15 % Palladium: 51.9 % Silver: 23 % Indium: 8 % Gallium: 2 % Rhenium: Less Than 1 % Ruthenium: Less Than 1 %	Gold: 55 % Palladium: 5.2 % Silver: 30 % Copper: 9 % Indium: Less Than 1 % Iridium: 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	170 HV	220 HV	255 HV	185 HV	255 HV
Tensile Strength	81 N/mm²	83 N/mm²	101 N/mm²	425 N/mm²	118 N/mm²
Indications for Use	Onlays Inlays 3/4 Crowns Crowns Telescope And Conus Crowns PFM Crowns Posts Short And Long Span Bridges	Onlays 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	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
Color	Yellow	Yellow	White	Yellow	White
Compatible Porcelains	Not Available	Not Available	IPS Classic And Conventional Ceramics	Not Available	Not Available
Melting Interval	1,170° C - 1,210° C	1,150° C - 1,185° C	1,230° C - 1,310° C	905° C - 975° C	1,185° C - 1,230° C
Casting Temperature	1,260° C - 1,320° C	1,240° C - 1,300° C	1,365° C - 1,425° C	1,030° C - 1,090° C	1,285° C - 1,345 ° C
Expansion	10 %	7 %	21 %	19 %	20 %
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