INBDE (Integrated National Board Dental Examination) Practice Exam

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<25% noble is classified as?

  1. high noble

  2. noble

  3. base metal

  4. non-noble

The correct answer is: base metal

Base metal is the correct classification because <25% noble refers to the amount of noble metals present in the material. High noble would have a higher percentage, while noble and non-noble would have equal to or higher percentages. It is important to note that noble metals are expensive, so materials with lower noble metal content are generally considered more cost-effective and are classified as base metal. Therefore, options A, B, and D are incorrect because they have a higher noble metal content.

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