Crown and Bridge Alloys

Dental crown and bridge alloys are used for casting full contour crowns and bridges. These alloys are generally created from noble and high noble metals with gold colored crowns the most popular. Different alloys are designed with different levels of hardness with softer alloys better suited for smaller restorations such as inlays and onlays, while harder alloys are better suited for crowns and bridges. Casting with crown and bridge 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.
CompanyDentsply Sirona ProstheticsDentsply Sirona ProstheticsDentsply Sirona ProstheticsDentsply Sirona ProstheticsDentsply Sirona Prosthetics
ItemNey 76 Crown and Bridge AlloyG Cast Crown and Bridge AlloyNey-Oro #5 Crown and Bridge AlloyNey-Oro 60 Crown and Bridge AlloyNey-Oro B-20 Crown and Bridge Alloy
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DescriptionType III. A multi-purpose, noble alloy that is highly suitable for full cast crowns and cast posts. Excellent for long spans or restorations subject G Cast is a noble, yellow Crown & Bridge Alloy containing 50 %; gold. This Type III alloy features a micro-fine grain structure and is ideally suited Type IV. An excellent choice for cast denture frameworks, long span bridgework and implants. Withstands cold working and adjustments.Type IV. Ney-Oro 60's outstanding strength is suitable for implant applications and demanding crown and bridge cases. Produces exceptional smooth Type III. Designed as the economical alternative to higher nobility Type III alloys, B-20 retains all of the properties and retains good color. Can be
CompositionPalladium: 25 %
Silver: 59 %
Copper: 14 %
Zinc: Less Than 1 %
Iridium: Less Than 1 %		Gold: 50 %
Palladium: 5 %
Silver: 32 %
Copper: 12 %
Zinc: Less Than 1 %
Iridium: Less Than 1 %		Gold: 63 %
Palladium: 5 %
Silver: 19 %
Copper: 12 %
Zinc: Less Than 1 %		Gold: 56 %
Palladium: 4 %
Silver: 19.9 %
Copper: 17 %
Zinc: Less Than 1 %
Iridium: Less Than 1 %		Gold: 61.8 %
Palladium: 3 %
Silver: 26 %
Copper: 8 %
Zinc: Less Than 1 %
Iridium: Less Than 1 %
Hardness235 HV235 HV260 HV265 HV205 HV
Tensile Strength660 N/mm2815 N/mm2685 MPa790 N/mm2555 N/mm2
Indications for UseFull Cast Crowns And Cast Posts
Long Spans Or Restorations		MOD Inlays
Single Crowns
Small Bridgework		Cast Denture Frameworks
Long Span Bridgework
Implants		Implant
Crown And Bridge Cases		Not Available
ColorWhiteGoldGoldGoldGold
Melting Interval900° C - 980° C860° C - 1,700° C890° C - 945° C835° C - 865° C885° C - 950° C
Casting Temperature1,080° C1,125° C1,035° C955° C1,040° C
Expansion9 %8 %15 %8 %19 %
Get InfoNot AvailableNot AvailableNot AvailableNot AvailableNot Available

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