Non-precious.
Beta is an easy to cast nickel chrome alloy. Unlike many non-precious alloys, Beta requires no metal conditioner or bonding agent and it polishes to a high shine. It bonds well to all major brands of porcelain. The metal is strong, permitting thin interproximal connectors and minimizing the chance of flex-failure. It should never be specified for patients allergic to nickel. It contains 1.8% beryllium and thus should always be ground with adequate suction and ventillation.
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