metaalvrij

Metaalvrij, meaning “metal-free” in Dutch, describes products or materials that contain no metal or metallic components. The term is used in several sectors where metal can pose allergy risks, aesthetic concerns, or corrosion issues, and it signals a focus on biocompatibility and non-metallic alternatives.

In dentistry, metaalvrij refers to prosthetic works and restorations made from non-metallic materials, such as zirconia, lithium disilicate glass-ceramic, or composite resins. These options offer improved aesthetics and a reduced risk of metal allergies, particularly for individuals sensitive to nickel. Some restorations, like crowns or bridges, require specialized fabrication and adhesive protocols. Strength and wear resistance vary by material, and suitability depends on the specific clinical indication and patient factors.

In jewelry and consumer goods, metaalvrij signifies items manufactured without base metals or metal alloys, often using ceramics, polymers, acrylics, glass, or non-metal settings. Such products are marketed as hypoallergenic or suitable for people with metal sensitivities. Buyers should still check product specifications, as some components such as clasps or internal fasteners may contain metal.

Outside of dentistry and consumer goods, metal-free options are pursued in medical devices, imaging-sensitive environments, and certain industrial applications where corrosion resistance, chemical compatibility, or radiolucency is advantageous. Common materials include ceramics, advanced polymers, and composite resins. The choice of material depends on mechanical requirements, aesthetic goals, and cost considerations.