| | Dental Health | Orthodontics
10 Key Elements in Dental Materials: Gold, Silver, Mercury, Copper, Zinc, Titanium, Zirconium, Chromium, Nickel, Fluorine
| Element | Primary Dental Use | Key Properties |
|---|---|---|
| Gold (Au) | Crowns, inlays, onlays, bridges (alloys) | Biocompatible, corrosion-resistant, malleable, durable |
| Silver (Ag) | Amalgam alloy component | Antimicrobial, strengthens amalgam |
| Mercury (Hg) | Amalgam binder (≈50% by weight) | Liquid at RT; forms solid alloy; toxicity concerns → phase-down (Minamata) |
| Copper (Cu) | Gold/palladium alloys; some endo sealers | Hardens alloys, improves corrosion resistance |
| Zinc (Zn) | Amalgam (scavenges oxygen); root canal cement; ortho wires | Improves amalgam margins; antibacterial |
| Titanium (Ti) | Implants, abutments, frameworks | Osseointegration, high strength-to-weight, biocompatible |
| Zirconium (Zr) | Zirconia crowns, bridges, abutments | High fracture toughness, tooth-colored, metal-free |
| Chromium (Cr) | Co-Cr alloys (RPD frameworks, crowns) | Strength, rigidity, corrosion resistance |
| Nickel (Ni) | Ni-Cr alloys (crowns, RPDs) | Cost-effective; allergenic in ~10-20% → declining use |
| Fluorine (F) | Fluoride (toothpaste, varnish, water, restorative materials) | Remineralizes enamel, inhibits demineralization, antibacterial |
Material selection balances mechanical demands, esthetics, biocompatibility, cost, and clinician skill.
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