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	Brite Gold XH Porcelain Alloy	Magenta Crown and Bridge Alloy	Maxigold KF Crown and Bridge Alloy	Midigold 50 Crown and Bridge Alloy	W-5 Porcelain Alloy
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Description	Brite Gold XH is a high-gold ceramic alloy offering a wide range of indications and a rich golden-yellow colour for a true-to-nature esthetic shade	Clinically proven reduced gold crown and bridge alloy demonstrating outstanding properties.	Clinically proven reduced gold crown and bridge alloy demonstrating outstanding properties.	Midigold 50 is a 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: 88.9 % Platinum: 9 % Indium: Less Than 1 % Tin: Less Than 1 % Iron: Less Than 1 % Manganese: Less Than 1 % Iridium: Less Than 1 % Lithium: Less Than 1 %	Gold: 50 % Palladium: 6.5 % Silver: 21 % Copper: 19.5 % Indium: 2 % Zinc: 1 % Iridium: Less Than 1 %	Gold: 56.6 % Palladium: 8.4 % Silver: 29 % Zinc: 1 % Indium: 5 % Iridium: Less Than 1 %	Gold: 50 % Palladium: 3.5 % Silver: 35 % Copper: 9.5 % Indium: 2 % 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	180 HV	285 HV	235 HV	180 HV	255 HV
Tensile Strength	107.0 N/mm²	820 N/mm²	480 N/mm²	470 N/mm²	118 N/mm²
Indications for Use	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 Implant Superstructures	Inlays Onlays Partial Crowns Single Crowns Telescope And Conus Crowns 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
Color	Rich Yellow	Yellow	Yellow	Yellow	White
Compatible Porcelains	Conventional Feldspar Ceramics	Not Available	Not Available	Not Available	Not Available
Melting Interval	1,080° C - 1,150° C	815° C - 875° C	955° C - 1,035° C	825° C - 915° C	1,185° C - 1,230° C
Casting Temperature	1,205° C - 1,265° C	930° C - 990° C	1,090° C - 1,150° C	970° C - 1,030° C	1,285° C - 1,345 ° C
Expansion	11 %	7%	5 %	6 %	20 %
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