Metal Restorations

Fixed prostheses require alloys instead of pure metals as the pure metals do not have the needed physical properties to perform in these restorative situations.

Benefits

• Greater compressive and tensile strength than other materials
• Minimal wear of surrounding teeth
• Certified biocompatibility –  US IdentAlloy^® certificates verify alloy status
• Longevity and reliability
• Long-term durability
• Cast restorations protect remaining tooth structure
• Excellent marginal integrity

Considerations

• Focus on long-term clinical performance of the chosen alloy.
• Select alloys that suit the needs of the patient. Avoid “one-size-fits-all” approach.
• Consider Type II alloys for short-span bridges, single crowns, inlays, onlays and partial crowns.
• Type IV alloys suit single crowns to large bridges and implant superstructures.
• Composition of alloys will vary according to the constituents of the alloy:

High noble content: (Au + Pt + Pd) ≥ 60% and Au ≥ 40%  
Noble Metal content: (Au + Pt + Pd) ≥ 25%
Base Metal: (Au + Pt + Pd) < 25%

Alloy Properties

Alloy Indications